I assume the battery is a standard 3S LiPo, in which case each cell is 5200mAh, not 1733.33...mAh, you don't divide the capacity by number of cells to get a cell's capacity, unless it's a 3P battery. The batteries are labeled by their per cell capacity, and then the cell count to get a preferred voltage (1S = 4.2V, 2S = 8.4V, 3S=12.6V and so on). If you take your battery apart and put the cells in parallel (the 3P battery), you'd then get 15600mAh battery that outputs 4.2V (fully charged). So the correct calculations are 5200/700 = 7 hours and 26 minutes for the B3 charger to charge a 2 or 3 cell (2S/3S) 5200mAh battery.
Hi, Yes each cell has 5200mAh battery is in a 3S 5200mAh battery. the 3S battery is connected in series but each cell is charged individually and they need current. The charger is rated at 700mA. This is the total current it supply from charger so we have to divide it in order to find the time. The 700mA rate of charge is not per cell. I have charged 2200mAh and 5200mAh and it was proven to be correct.
@@robojax that is not correct. The charger charges a single cell at 700mA. What the 3x means is it can provide the 700mA over all three cells it's connected to simultaneously but it doesn't charge one cell at 2100mA. Messure it yourself if you can, or ask an engineer. Charging 2200mAh battery with the B3 charger will take just over 3 hours. If you get less, it's because you havent charged the battery from 0% to 100%. The LiPo discharge rule is to discharge about 80% which in voltage means to about 3.5-3.8V. This means to get to full again, it doesn't need the full 2200mAh. It could also be that the charger gives more amps than rated, but what I said still applies: charging 5200mAh with the B3 charger no matter if its 2S or 3S, it still takes over 7h.
You just answered it "doesn't charge one cell at 2100mA" yes true. so it charge over all three with 700mA. That is what I am saying. if it charges at 700mA exits from charger at any moments, then you can find the total time/hour until the battery is full. I have taken energy storage course at graduate level and practically I have charged my battery.
@@robojax I think there is some misunderstanding here since I've read your replies to comments where you've done the calculations correctly. In your video you did not - which is what I am trying to tell you. The B3 charger charges one cell at 700mA, 4.2-4.25V. It doesn't matter if you've connected 2S or 3S. As you yourself have commented, the charge time is always [cell capacity]/700mA=[hours to fully charged]. But then you said "The 700mA rate of charge is not per cell" - while in fact, it is. Each cell in a 3S 5200mAh battery is 5200mAh. And in your video you divide the 5200mAh battery capacity by three leaving 1733mAh per cell, which is completely false. Charging 5200mAh at a rate of 700mA takes 7.42 hours and not 2.5 hours as you claimed in your video. But then in your comments you've said that it takes 7.5 hours?? Very confusing. But I'm sticking to the errors in the video since that's what people will see mostly. It doesn't matter what courses you've taken, I'm trying to teach you something so you won't spread false information in the future of your videos. I think it's great what you've created - I'm just pointing out a few errors.
Olli Akokari is correct. The 3x700mA is a true, but misleading statement from the manufacturer. This charger has 3 independent chargers inside for each battery, and each charger supplies 700mA to the battery it is connected to. So you need more than 7 hours to charge the 5200mAh battery. Thank you for the video though.
Thanks for your help the manual doesn’t talk about blinking the way it is wrote makes you think it’s solid red then green thought was maybe faulty until your video
This was very very helpful.I even changed my battery assuming that there is a problem with my charger of blinking led sof red and green.bt now i clarrified it
Hey. When connecting the battery plug to the charger, I accidentally reversed it for a second. Only the left led is showing red and others are not glowing. When I connect the charger the left led shows up for a second and then it gets off. When I connected my battery to my pcb(APM 2.8) the battery is showing 8.17v and the percentage rapidly decreases even when I didn't connect any motors in it. Is my battery damaged or my charger (b3 lipo)is damaged. My battery is 3 cell 11.1 V lipo battery.
Can you please tell me why my charger (this charger) will initially start charging but then when I come back after a few hours, the three green lights flash rapidly and my battery is dead?
Sir. I'd been charged well but one day when I tried to charge, battery connector wire had getting hot and got smoke on 2s and 3s balance port and little burnt on battery connector, 2s 3s balance port both. What was the cause of this?
Bro in my case 2 cells are balanced and last one is not balanced so questions arises in my mind my charger won't stop charging other 2 cell which are fully charged now and last cell always keeps on hanging on 3.85 like that so what happens is that when I had put my battery in storage mode other 2 cells were at 3.7 something and last cell was not 3.7 and like 3.3 and after some times I found out last cell is heavily puffed so I punched battery and removed excess gas and sealed it back and now same problem that charger won't stop charging 2 cell together I had seen only 1 red light and other cell keep over charging this charger is dumb am I right ? And If u know any solution then plz reply
Yes it is normal. The charger supplies 700mAh and 2000 ÷ 700=3.1 hours. I don't know how hot. But make sure NOT to charge in living area. Put the charger and battery always on non-flammable material like concrete or metal and in garage or specially designed bags.
I have a question if you can answer it I would be grateful so I have a similar charger like this where the lights are green till you plug something in so I have a 3s battery 5200 mah and when I plugged it in the first time all the lights were red then after about 30 min the 3s light turned green then now whenever I plug it in the 3s light is always green what’s going on?
im have made a custom battery pack using 3s 18650 (3 cell, almost 12v). I have also made the balanced lead (white connector ) for charging with b3 charger. when i connect the battery to the charger, the 3 leds are always red, but i have chrged that battery pack to full before. those led where red for long time. what is the problem i cant understand please help
the charger will keep charging till the all cells have reached their max voltage. the max voltage for a typical cell is 4.2v, so in total a 3s battery will be 12.6v when the charger turns off. if ur battery peaks at 12v, then each cell is maxxed at 4v. the charger will continue to try and charge it thinking it will eventually reach the desired 12.6v. but it won't. idk tho rlly. im confused y ur battery is at "almost 12v" when it should be at 12.6v when fully charged. my 18650 cells r charged till 4.2v
@@9e05cherianpadipurackalvar6 thanks for your time...to reply.. To solve this I have installed a bms to solve this (for temporary, I guess ). Thanks bro..
I have a battery that was left into my rifle and it was did I guess and when I plug it in only the 3rd light shows green and nothing changes i don’t know what’s wrong
If the voltage of a loop battery goes below 3.2 or 3 voltes , the charger will not charge it assuming it is dead. So first wait for a few hours . If charge doesn’t start then charge I individually by connecting 4.2V with constant current or maximum 1C. 1C means 1 capacity of the battery. Of your battery is 2000mAh then 1C is 2000mA. In a few minutes measure the voltage of the cell , if it is not dead it should be above 3v . Then the charger will charge it.
Hello , nice video. I have a question if you dont mind. I charged three batteries of my drone (Hubsan Zino).The unusual thing is that the middle led stays always red and when i plug all of them on my drone it shows me the battery percent as N/A instead of power percentange! Why is this happening?
Hi. There might be an issue with one of your cells in your battery. Check for a voltage checker online and find the proper voltage. If each cell is well above 3.1v then this might be problem with your charger.
Red light should be ON and not blinking.Check the voltage of each cell of battery either with multimeter or with this images-na.ssl-images-amazon.com/images/I/618Ltxfca0L._SX355_.jpg . Either ONE cell (the one which makes charger RED) needs charge and other cells are full . If the all cells have almost the same voltage, then the charger is bad. If the voltages are different, then the battery is bad.
I have Li-Ion phone batteries which have different mAh (1500mAh and 1800mAh) but same voltage. so can I connect these 2 batteries in series and can I connect balance charger to charge it. Please help!
Mine when plugged in, the cell 3 is green and blink red, cell 1 and 2 is not lit at all. All 3 leds turn red when i connect a 3s battery though. Is mine broken?
it could be the battery or the charger. To make sure it is not the battery either use another known-good battery or use multimeter to check each cell voltage. you learn it from this video ua-cam.com/video/Cx25ozeeC8Q/v-deo.html and if the battery is good, then we know charger is bad. good luck.
Hi Dear I have 2 cell battery which is 2700mAH How long it should take until both two lights go green ?? It take with me more than 5 hours is that fine ?
Greetings, I have one, it worked good at first but later on it went all green lights with flashing background red and all green when I connect the Battery (used it about 40 minutes). So when all green lights are flashing with a little red on the background means the charger it’s bad? Does not detect that the battery needs to be charged but it charges it?
Greetings. This charger will charge only if the battery needs charge. the color of the LEds have been in the video and I don't remember anything about it now. Unless I watch it. So you watch it then.
i have a 3 cell 2200 mah battery and cell 2 is off balance. Can i balance once cell using this charger ? Connect a jumper lead to cell 2 and charge only that so they are all equal ?
Hi, great video. My 7.4v battery lasts too little, for about less than 1 minute, even if i charge it properly, do u think this imax b3 charger will solve this problem?
Hi, it seems you battery is not holding charge. do you charge it for 3 to 4 hours? if not then do it and use proper charger. this b3 will help if your battery is good. battery has life and number of times you can charge it. after a while they become useless.
i have a 3 cell 3300 mah 35c 11.1 v lipo battery.. my second is totally discharged and shows 0v so can i charge that single cell with a B3 imax rc charger? or how should i recover the dead battery cell , i only have the B3 imax rc charger with me.
you can't change a battery or a cell that has voltage below 3.2V. the charger will not charge it. the battery should not be 0V.. when you use it, you should never allow the voltage to go below 3.2V or less or more depending on manufacturer specs. So the battery should be dead. but if you think to revive it, apply 4.2V to each cell from a power supply and limit the current to like 500mA. Higher current might cause fire. Allow it for half hour. After that if the voltage stayed, then you can connect it to the charger.
The charger is charging any lithium polymer 2s or 3s battery regardless of capacity. It just takes different amount of time to charge. I have given example of charge time
@@robojax okay thank you ive bought one and just wanted to know also does cell1 usually charge first or is it either because my first battery has come up cell2 charged first thanks buddy
immediately it is alright. If the time passes which I have explained in video how to calculate the time, then either your battery is bad or your charger. To make sure you need either another battery or another charger.
Hello,Robojax. My B3 PRO's cell 1 is green and flashing, when it connected to my battery. Do u know what's wrong? I cannot find the reason from internet. Is my battery damaged?
it means other cells are full and it is charging cell 1. You have to wait a little longer. If it doesn't go off after longer period of time like 2 hours or more, then battery or charger must be bad. You can check your battery using battery tester explained here ua-cam.com/video/A0EjDtGSepw/v-deo.html or use a multimeter and check each cell which you can learn from this video ua-cam.com/video/Cx25ozeeC8Q/v-deo.html
@@robojax Thank you so much. I am afraid my battery is damaged. The last one is 0.08v, the middle one is 3.82v, and the first one is 3.83v. Can I cut off the last one, then use it normally only two battery? Can I charge it?
I put a new 2s battery 2200, after 3 hours of charging it looks cell 1 red, cell 2 green,cell 3 green with red blinks why?,I tested the voltage and it is 8.1 does not reach 8.4, the charger îs a brand new
2200÷500=4.4 hours you may wait for a little longer. I am assuming the charge current for this charger id 500mA as I've forgotten the number. Sometimes a cell gets damaged or the charger. The only way to know is to charge another batter to find out.
Hello, I have what may be a dumb question. The charger lists the “max charge current” as 3*800mA. If I have a 5200 mAh 2S battery, does it take 5200/800 = 6.5 hours or 5200/(3*800) = 2.16 hours to fully charge?
this charger wont' do it. You might try to get the JST-XH cable for 3S battery, connect it to charger and connect only 2 wire of that to your 1S and see if it can be charged. www.ebay.ca/itm/112595277459
I believe I've shown that. 4 pins means we have 3 cells. 3 wires for 3 cells and 1 wire for ground or negative. if battery has 2 cells, then we have 3 wires.
my friend your question suggest that you have not watched the video because I have explained that. so please watch the video fully to learn that and get your answer.
Is it safe to use with a triple charger, I have three lithium batteries. And my IMAX b3 had a triple plug charger. Or does it need to be one battery at a time.
If you got one connector for all of them you can change them. Connecting 3 battery bin parallel will increase the capacity ans consequently it will take longer time to charge.
@@robojax I’m talking about danchee ridge rock battery it’s 7.4 v and I called red cat and they told me that the battery could charge on that kind of charger that you have in the video and I have the same charger
Sir i have the same battery charger i have a 2s 2400 but the cell number 1 seems to be not charging because its red for a whole 5 hours or more,i used the same charger with my other batt and it seems to work well,what seems to be the problem with my battery? Thanks
I will not know for sure. Either the battery or the charger. You can connect another battery and check or use a multimeter to check each voltage of the cells.
@@paolodulayshooting those chargers aren't exactly too reliable. It is common, that after a while one channel just doesn't charge. Your case looks like exactly that happened.
The reason I made this video what answer to your question. I've said that in the first few minuets of the video. Yes it is 2S and 3S charger. please watch.
Hey when i charging my battery it show 2 red on it(2s btw)and i let it charger and after a while the first red has go green and other is red but not blinking is that ok?
Hi, your battery cell is bad. check it with multimeter. if battery is okay, then it is possible the charger is bad . learn about wire of Lipo battery here ua-cam.com/video/Cx25ozeeC8Q/v-deo.html
i have the same charger, mine is shit, i gives different indication each time i reconnet the battery, for example i connect a used battery it shows all lights red, they never go green, i test the battery with a multimeter and it is fully charged, then i connect the battery to the charger and it shows full charged, i disconnect the battery, reconnect it and it shows not charged again, and so on :P
I have explained that this charger is for 2S and 3S (3 cell). each cell is 3.7. Sor 3.7x4-14.8V so 14.8V is 3S and the same way you can calculate to see how many cells you have. Also 3S has 4 wires and 4S battery has 5 wires.
I think its wrong. If the lipo is 5s and rated at 5200mah it will fill at 7 hours. If the balancer can output 700mah. If the battery is on series. The voltage increase. But if it is on parrallel the mah/Ah increase. Which in the case of lipo it is configure as series.
The series and parallel doesn't matter. it is the total capacity that matters. We are feeding 700mAh to fill one battery of 5200mAh . If we charge 2 batteries of 2600mAh connected in parallel, then 2600+2600=5200mAh.
@@robojax in mission planner I was testing the motors and gave a 93% output. After 4s the esc got burnt and smoke was comming out. No damage to anything other that esc. So if I give full throttle during my flight then all the esc will be burnt?
some time cells do not charge at the same rate. but sometimes one cell get damaged. if the light doesn't change, then something is wrong. most probably the battery is bad but also possible the charger gets damaged. so if you have multimeter, check the voltage of each cell and see if one is damaged (low voltage). see this video to learn about each cells and wiring ua-cam.com/video/Ogc0E7n1jgI/v-deo.html
yes. That is what charger does. If it doesn't stop, the battery gets damaged. When you connect battery, the lights get Red and when fully charged, the LED for each cell will go green.
it means either battery is dead. but also possible that charger is bad. to make sure, try charging another battery to make sure charger is in good shape.
I looked at the video making sure I did not miss showing the calculation. I have explained it in video even I have used calculator to calculate it. Please watch and do not escape.
25C means this battery can supply 25A constant (C) and has nothing to to with charging. yes it can. I have shown and explained in video. This charger can charge at 700mA or 750mAh (I forgot, you watch the video to find out) so 2200mAh ÷ 750mA=2.9H so it will charge it in about 3 hours.
the capacity of 8000mAh does not matter. this can charge up 700mAh charge. It can charge 2S and 3S which yes it can. But you have to calculate the time, 8000/700= 11.4 hours is the charge time. So if you don't need it quickly this will work in about 12 hours. But for such battery you might need 2000-5000mAh charger to do it quickly like in 2 or 3 hours.
If you did the math and the times has passed, two possibilities 1-dead batter 2- dead charger. So you need another battery and/or another charger to find the problem. Of course you can check it will multimeter but it is hard for me to explain.
yes you can. It can charge any 3S battery. the amount of current this charger provide is 700mA so 4400mAh÷ 700mA = 6.3H so it will take about 6.5 hours to charge your battery.
so it can either charges ONLY one cell or, the LED (light emitting diode) is bad. So leave the battery for charge and then check your battery's each cell. If all cell have charge, then only the LED is bad. If you see all cells are not charged, the the charger is bad.
2 cells are at 4.4 was even higher!!..and 3 was like zero bought a parallel board now buying new charger n batts..smh..im new but its bin a bummer ..so i basicly have all these busted batts ....even if its not swollen are they unsavable?
No. when you read 5200mAh, it is the total capacity of battery. Drone of RC car doesn't draw current from each cell rather from just 2 wires. it is the charge wires to the individual cells that get separate voltage and current and that is to be able to chemically charge each cell based on it's own condition.
@@robojax each cell has indeed 5200mAh, but rating at voltage of one cell (3,7V nominal). In serial stack You do not add the capacity, you add the voltage. The 3S packet consisting of 3 cells, each with capacity of 5200mAh still results in 5200mAh, but at 11,4V nominal voltage . That is why the capacity rating of a whole packet is the same as for one cell. And yes, your calculation is simply "badshitt bananas". The packet (empty) should charge to full in around 7-8 hours. You should learn the basics first, before you try to teach others. I know, archeo digg site. but i just had to.
I assume the battery is a standard 3S LiPo, in which case each cell is 5200mAh, not 1733.33...mAh, you don't divide the capacity by number of cells to get a cell's capacity, unless it's a 3P battery. The batteries are labeled by their per cell capacity, and then the cell count to get a preferred voltage (1S = 4.2V, 2S = 8.4V, 3S=12.6V and so on). If you take your battery apart and put the cells in parallel (the 3P battery), you'd then get 15600mAh battery that outputs 4.2V (fully charged).
So the correct calculations are 5200/700 = 7 hours and 26 minutes for the B3 charger to charge a 2 or 3 cell (2S/3S) 5200mAh battery.
Hi, Yes each cell has 5200mAh battery is in a 3S 5200mAh battery. the 3S battery is connected in series but each cell is charged individually and they need current. The charger is rated at 700mA. This is the total current it supply from charger so we have to divide it in order to find the time. The 700mA rate of charge is not per cell. I have charged 2200mAh and 5200mAh and it was proven to be correct.
@@robojax that is not correct. The charger charges a single cell at 700mA. What the 3x means is it can provide the 700mA over all three cells it's connected to simultaneously but it doesn't charge one cell at 2100mA.
Messure it yourself if you can, or ask an engineer.
Charging 2200mAh battery with the B3 charger will take just over 3 hours. If you get less, it's because you havent charged the battery from 0% to 100%. The LiPo discharge rule is to discharge about 80% which in voltage means to about 3.5-3.8V. This means to get to full again, it doesn't need the full 2200mAh.
It could also be that the charger gives more amps than rated, but what I said still applies: charging 5200mAh with the B3 charger no matter if its 2S or 3S, it still takes over 7h.
You just answered it "doesn't charge one cell at 2100mA" yes true. so it charge over all three with 700mA. That is what I am saying. if it charges at 700mA exits from charger at any moments, then you can find the total time/hour until the battery is full. I have taken energy storage course at graduate level and practically I have charged my battery.
@@robojax I think there is some misunderstanding here since I've read your replies to comments where you've done the calculations correctly. In your video you did not - which is what I am trying to tell you.
The B3 charger charges one cell at 700mA, 4.2-4.25V. It doesn't matter if you've connected 2S or 3S. As you yourself have commented, the charge time is always [cell capacity]/700mA=[hours to fully charged]. But then you said "The 700mA rate of charge is not per cell" - while in fact, it is. Each cell in a 3S 5200mAh battery is 5200mAh. And in your video you divide the 5200mAh battery capacity by three leaving 1733mAh per cell, which is completely false. Charging 5200mAh at a rate of 700mA takes 7.42 hours and not 2.5 hours as you claimed in your video. But then in your comments you've said that it takes 7.5 hours?? Very confusing. But I'm sticking to the errors in the video since that's what people will see mostly.
It doesn't matter what courses you've taken, I'm trying to teach you something so you won't spread false information in the future of your videos. I think it's great what you've created - I'm just pointing out a few errors.
Olli Akokari is correct. The 3x700mA is a true, but misleading statement from the manufacturer. This charger has 3 independent chargers inside for each battery, and each charger supplies 700mA to the battery it is connected to. So you need more than 7 hours to charge the 5200mAh battery. Thank you for the video though.
Thanks for your help the manual doesn’t talk about blinking the way it is wrote makes you think it’s solid red then green thought was maybe faulty until your video
You are welcome.
Best explanation ever. All info lipo charging is bs. This one nice
Glad you liked it
Hey. I have a 3s 1000mah but when I plug it in, only one red light goes on. It’s been 2 hours or so but shouldn’t all three lights be red? Thanks.
This was very very helpful.I even changed my battery assuming that there is a problem with my charger of blinking led sof red and green.bt now i clarrified it
Glad hearing this. :-)
Fantastic detail and explanation.
Hey. When connecting the battery plug to the charger, I accidentally reversed it for a second. Only the left led is showing red and others are not glowing. When I connect the charger the left led shows up for a second and then it gets off. When I connected my battery to my pcb(APM 2.8) the battery is showing 8.17v and the percentage rapidly decreases even when I didn't connect any motors in it. Is my battery damaged or my charger (b3 lipo)is damaged. My battery is 3 cell 11.1 V lipo battery.
Hi, battery is very powerful. it should have damaged the charger. specially if it is this charger.
@@robojax thank you sir. But my main question is if battery is damaged or not.
I am the one who asked the question sir.
Very much thank you for your instant reply. You will become a successful UA-camr
Can you please tell me why my charger (this charger) will initially start charging but then when I come back after a few hours, the three green lights flash rapidly and my battery is dead?
Thank you, very helpful.
You are welcome.
Nice video just want to ask using this charger on a 1100mah do i have to wait for the 3 green light on to fully charge the battery? thank you
of course. each light means independent cell. cells can charge at different rate.
@@robojax thanks for this it helps a lot😊🤙🙏
Sir. I'd been charged well but one day when I tried to charge, battery connector wire had getting hot and got smoke on 2s and 3s balance port and little burnt on battery connector, 2s 3s balance port both. What was the cause of this?
Bro in my case 2 cells are balanced and last one is not balanced so questions arises in my mind my charger won't stop charging other 2 cell which are fully charged now and last cell always keeps on hanging on 3.85 like that so what happens is that when I had put my battery in storage mode other 2 cells were at 3.7 something and last cell was not 3.7 and like 3.3 and after some times I found out last cell is heavily puffed so I punched battery and removed excess gas and sealed it back and now same problem that charger won't stop charging 2 cell together I had seen only 1 red light and other cell keep over charging this charger is dumb am I right ? And If u know any solution then plz reply
I have the GIFI battery 4200 mAh for the hubsan Zino.
It says green and then when I plug it into my quadcopter it says 80% or 90%.
interesting. You have to use a multimeter to measure the voltage, then you would know. Very rarely it is possible that the charger might be bad.
My 2200 mah battery was charged from 11.3 to 12.5 volts in about 3 hrs .is it normal? And the charger gets quite hot while charging.
Yes it is normal. The charger supplies 700mAh and 2000 ÷ 700=3.1 hours. I don't know how hot. But make sure NOT to charge in living area. Put the charger and battery always on non-flammable material like concrete or metal and in garage or specially designed bags.
I have a question if you can answer it I would be grateful so I have a similar charger like this where the lights are green till you plug something in so I have a 3s battery 5200 mah and when I plugged it in the first time all the lights were red then after about 30 min the 3s light turned green then now whenever I plug it in the 3s light is always green what’s going on?
That is fine. Your battery does not need charge. Use it and empty the batter so it can be charged.
@@robojax it does because when I put it in the car it doesn’t work
im have made a custom battery pack using 3s 18650 (3 cell, almost 12v).
I have also made the balanced lead (white connector ) for charging with b3 charger.
when i connect the battery to the charger, the 3 leds are always red, but i have chrged that battery pack to full before.
those led where red for long time.
what is the problem i cant understand please help
the charger will keep charging till the all cells have reached their max voltage. the max voltage for a typical cell is 4.2v, so in total a 3s battery will be 12.6v when the charger turns off. if ur battery peaks at 12v, then each cell is maxxed at 4v. the charger will continue to try and charge it thinking it will eventually reach the desired 12.6v. but it won't.
idk tho rlly. im confused y ur battery is at "almost 12v" when it should be at 12.6v when fully charged. my 18650 cells r charged till 4.2v
@@9e05cherianpadipurackalvar6 thanks for your time...to reply..
To solve this I have installed a bms to solve this (for temporary, I guess ).
Thanks bro..
I have a battery that was left into my rifle and it was did I guess and when I plug it in only the 3rd light shows green and nothing changes i don’t know what’s wrong
If the voltage of a loop battery goes below 3.2 or 3 voltes , the charger will not charge it assuming it is dead. So first wait for a few hours . If charge doesn’t start then charge I individually by connecting 4.2V with constant current or maximum 1C. 1C means 1 capacity of the battery. Of your battery is 2000mAh then 1C is 2000mA. In a few minutes measure the voltage of the cell , if it is not dead it should be above 3v . Then the charger will charge it.
Hello , nice video. I have a question if you dont mind. I charged three batteries of my drone (Hubsan Zino).The unusual thing is that the middle led stays always red and when i plug all of them on my drone it shows me the battery percent as N/A instead of power percentange! Why is this happening?
The issue must be your charger if you see the same issue with different batteries.
Hi. There might be an issue with one of your cells in your battery. Check for a voltage checker online and find the proper voltage. If each cell is well above 3.1v then this might be problem with your charger.
On my charger only middle red light is on and after plugging the battery the red blink only one red light is blinking what to do
Red light should be ON and not blinking.Check the voltage of each cell of battery either with multimeter or with this images-na.ssl-images-amazon.com/images/I/618Ltxfca0L._SX355_.jpg . Either ONE cell (the one which makes charger RED) needs charge and other cells are full . If the all cells have almost the same voltage, then the charger is bad. If the voltages are different, then the battery is bad.
I have Li-Ion phone batteries which have different mAh (1500mAh and 1800mAh) but same voltage. so can I connect these 2 batteries in series and can I connect balance charger to charge it. Please help!
yes. any Lithium that starts with Li- is okay. and you can do it.
Mine when plugged in, the cell 3 is green and blink red, cell 1 and 2 is not lit at all. All 3 leds turn red when i connect a 3s battery though. Is mine broken?
it could be the battery or the charger. To make sure it is not the battery either use another known-good battery or use multimeter to check each cell voltage. you learn it from this video ua-cam.com/video/Cx25ozeeC8Q/v-deo.html and if the battery is good, then we know charger is bad. good luck.
if the battery voltage is below about 2.8V-3V, charger will not detect it.
Hi Dear
I have 2 cell battery which is 2700mAH
How long it should take until both two lights go green ??
It take with me more than 5 hours is that fine ?
Assalamu alaikum Moheb, Because this charger can charge at about 700mAh just divie 2700 ÷700= 3.8 hours or about 4 hours.
Greetings, I have one, it worked good at first but later on it went all green lights with flashing background red and all green when I connect the Battery (used it about 40 minutes).
So when all green lights are flashing with a little red on the background means the charger it’s bad? Does not detect that the battery needs to be charged but it charges it?
Greetings. This charger will charge only if the battery needs charge. the color of the LEds have been in the video and I don't remember anything about it now. Unless I watch it. So you watch it then.
i have a 3 cell 2200 mah battery and cell 2 is off balance. Can i balance once cell using this charger ? Connect a jumper lead to cell 2 and charge only that so they are all equal ?
this charger is charging each cell separately. you can do it yes. You may look at cell balancer video here ua-cam.com/video/l2APm5olDiA/v-deo.html
Hi, great video. My 7.4v battery lasts too little, for about less than 1 minute, even if i charge it properly, do u think this imax b3 charger will solve this problem?
Hi, it seems you battery is not holding charge. do you charge it for 3 to 4 hours? if not then do it and use proper charger. this b3 will help if your battery is good. battery has life and number of times you can charge it. after a while they become useless.
i have a 3 cell 3300 mah 35c 11.1 v lipo battery.. my second is totally discharged and shows 0v so can i charge that single cell with a B3 imax rc charger? or how should i recover the dead battery cell , i only have the B3 imax rc charger with me.
you can't change a battery or a cell that has voltage below 3.2V. the charger will not charge it. the battery should not be 0V.. when you use it, you should never allow the voltage to go below 3.2V or less or more depending on manufacturer specs. So the battery should be dead. but if you think to revive it, apply 4.2V to each cell from a power supply and limit the current to like 500mA. Higher current might cause fire. Allow it for half hour. After that if the voltage stayed, then you can connect it to the charger.
Hey when the battery is full how will the charger show?
Didn’t I say it?
is this charger safe and good for charging a 7.4v 2s 3600mah 45c battery?
The charger is charging any lithium polymer 2s or 3s battery regardless of capacity. It just takes different amount of time to charge. I have given example of charge time
Soo im new to all this can i use one of these as my everyday charger for like a 5200mAh 50c and a 4000 mah 3s 40c?
The capacity and the C does not matter . It will just take more or less time to charge battery with different capacity. Yes you can
@@robojax thank you buddy
@@robojax okay thank you ive bought one and just wanted to know also does cell1 usually charge first or is it either because my first battery has come up cell2 charged first thanks buddy
Only one green light on cell 1 appears from first plugged to power, is this charger alright?
immediately it is alright. If the time passes which I have explained in video how to calculate the time, then either your battery is bad or your charger. To make sure you need either another battery or another charger.
Hi how do you know if the battery is toped charged. All green light ?
Yes
What if it us flashes red and green
2:44 listen on full blast with headphones like me to feel like you’ve been shot in the head lol
LOL. yes this is very loud. good tool to put it on your RC car or drone so you could hear it.
I just got one of these chargers the other day, but it puts out 3*800mah... would that be too much current for a 3s 300mah lipo?
The chargers check the voltage and adjusts the current until it is full. So you should not worry.
@@robojax Thank you my friend, I was worried it may try to charge my battery at higher than 1c rate, and result in a fire. Good to know!
Hello,Robojax. My B3 PRO's cell 1 is green and flashing, when it connected to my battery. Do u know what's wrong? I cannot find the reason from internet. Is my battery damaged?
it means other cells are full and it is charging cell 1. You have to wait a little longer. If it doesn't go off after longer period of time like 2 hours or more, then battery or charger must be bad. You can check your battery using battery tester explained here ua-cam.com/video/A0EjDtGSepw/v-deo.html or use a multimeter and check each cell which you can learn from this video ua-cam.com/video/Cx25ozeeC8Q/v-deo.html
@@robojax Thank you so much. I am afraid my battery is damaged. The last one is 0.08v, the middle one is 3.82v, and the first one is 3.83v. Can I cut off the last one, then use it normally only two battery? Can I charge it?
@@robojax Ok, I have solved my problem. I cut the damaged battery off, and it is 2s now. The charger is normally, too.
I put a new 2s battery 2200, after 3 hours of charging it looks cell 1 red, cell 2 green,cell 3 green with red blinks why?,I tested the voltage and it is 8.1 does not reach 8.4, the charger îs a brand new
2200÷500=4.4 hours you may wait for a little longer. I am assuming the charge current for this charger id 500mA as I've forgotten the number. Sometimes a cell gets damaged or the charger. The only way to know is to charge another batter to find out.
@@robojax thanks 👍👍
@@robojax i need another charger
Good luck charging.
@@robojax today I lost the drone with the new battery :)
Hello, I have what may be a dumb question.
The charger lists the “max charge current” as 3*800mA.
If I have a 5200 mAh 2S battery, does it take 5200/800 = 6.5 hours or 5200/(3*800) = 2.16 hours to fully charge?
I’ve come to the conclusion that the answer is (5200/2*800)
800mA is the total current. Don’t worry about the cells. Just divide the capacity by 800mA
@@robojax thank you for your help and I appreciate how active you are in the comments!
My battery is 14.4V and has 3 cells (3 X 4.8V) and it is ni-cd..... so will it work..... please just say yes or no..... thank you
will it charge?
Hi, I mentioned in the video that it charges 3S batteries. I also explained that it has 3 LED for each cell.
How to charge particular 1cell in 3 cell battery with compact charger ..?
this charger wont' do it. You might try to get the JST-XH cable for 3S battery, connect it to charger and connect only 2 wire of that to your 1S and see if it can be charged. www.ebay.ca/itm/112595277459
Does this charge battery packs that have 4 pins
I believe I've shown that. 4 pins means we have 3 cells. 3 wires for 3 cells and 1 wire for ground or negative. if battery has 2 cells, then we have 3 wires.
How long will it take a 650 MAH 20C 2S Lipo 7.4 V how long will it take to charge for a mini B battery
I have explained the calculations in the video
I have a question,can i use a 800mah charger to charge a 2200mah lipo battery? Will it do any harm or somethings else please tell me.
my friend your question suggest that you have not watched the video because I have explained that. so please watch the video fully to learn that and get your answer.
@@robojax arghhhhh okay
Is it safe to use with a triple charger, I have three lithium batteries. And my IMAX b3 had a triple plug charger.
Or does it need to be one battery at a time.
If you got one connector for all of them you can change them. Connecting 3 battery bin parallel will increase the capacity ans consequently it will take longer time to charge.
Can I use a nimh battery on it or not with a connector like a 2s
If the nominal voltage bid 3.7 then yes
@@robojax I called red cat and they told me it’s a 7.4 V battery and they told me it would work with the charger
Your is 3.7 and has 2 cells 3.7X2=7.4. Yes it will work
@@robojax I’m talking about danchee ridge rock battery it’s 7.4 v and I called red cat and they told me that the battery could charge on that kind of charger that you have in the video and I have the same charger
My charger is blinking Red & Green fast. What does that indicate ?
either the battery or the charger is bad. Try to use known good battery to find out.
does it have a storage charging feature?
No it doesn't
I have a 3s, 11.1v, 1500 mah, 35c will this charge it and if so how long should I expect?
I have given the example of calculation in video, but here. This charger charges at 700mA, simply divide your 1500 to 700 and you will get the Hour.
2 hours
I have a 7.4 Volt 1000mah 15C battery, will it charge?
Yes it will. With 700mA charge rate 10000÷700=14.28, it will be charged in about 14 hours.
@@robojax no it's a 1000mah not 10000mah. It's gonna be 1.4hours.
Sir i have the same battery charger i have a 2s 2400 but the cell number 1 seems to be not charging because its red for a whole 5 hours or more,i used the same charger with my other batt and it seems to work well,what seems to be the problem with my battery? Thanks
I will not know for sure. Either the battery or the charger. You can connect another battery and check or use a multimeter to check each voltage of the cells.
Ok sir noted thank you.
@@paolodulayshooting those chargers aren't exactly too reliable. It is common, that after a while one channel just doesn't charge. Your case looks like exactly that happened.
I have 2 cell 2200mah lipo battary..after 3 hours the cell 2 light is solid green but cell 1 is red...what should i do now?
if you wait for some times and it doesn't change, there are two possibility. 1-Bad battery. Try charging another battery. or 2-Bad charger. .
@@robojax the battary is kinda swollen on upper side..is the battary dead?
@Robojax Can it charge 3s Li-Ion Batteries?
The reason I made this video what answer to your question. I've said that in the first few minuets of the video. Yes it is 2S and 3S charger. please watch.
Yes, but you havent mentioned that it can charge any type of battery
Is it balanced charging. Plz reply, I'm planning to buy it .
yes it does
@@robojax Thanks !
Can i charge li ion battery also?
Hey when i charging my battery it show 2 red on it(2s btw)and i let it charger and after a while the first red has go green and other is red but not blinking is that ok?
Hi, your battery cell is bad. check it with multimeter. if battery is okay, then it is possible the charger is bad . learn about wire of Lipo battery here ua-cam.com/video/Cx25ozeeC8Q/v-deo.html
@@robojax thank for reply it ok know after charger it a little bit longer all green back
you are welcome. I am glad it turned out to be okay.
How can I charge multiple lipo, can I use an adapter?
You can charge 1 battery in 3 hours but if you connect 2 battery, it will take 6 hours. If you want then get parallel adapter.
@@robojax👍 I understand, but it's not a problem, I can put it to charge in the night, thanks sir, good video
Will a 5200mah 7.4v 2s 30c battery be able to get charged by this?
yes you can. 5200÷700=7.4a so it will take 7.5 hours.
i have a problem with mine when i plug it in all green lights and when i plug my battery in sill all green lights and doesnt charge
help please
either the battery fully charged, or battery is bad. or the charger is bad.
@@robojax I think the charger is the problem because the battery is not charging
How long will it take if i charge a 3 cell 5000mah lipo with this charger?
that is exactly I've explained in the video.
i have the same charger, mine is shit, i gives different indication each time i reconnet the battery, for example i connect a used battery it shows all lights red, they never go green, i test the battery with a multimeter and it is fully charged, then i connect the battery to the charger and it shows full charged, i disconnect the battery, reconnect it and it shows not charged again, and so on :P
It seems your charger is defective.
I have a 14.4V 2000 mah ni-cd battery....... can it be charged with this? I also have a 12.8V, can it charge?
I have explained that this charger is for 2S and 3S (3 cell). each cell is 3.7. Sor 3.7x4-14.8V so 14.8V is 3S and the same way you can calculate to see how many cells you have. Also 3S has 4 wires and 4S battery has 5 wires.
my battery has 3 X 4.8V cells, so it is 3s.....but it is ni-cd and 14.4V.....so will it work?
please just sa yes or no
I think its wrong. If the lipo is 5s and rated at 5200mah it will fill at 7 hours. If the balancer can output 700mah. If the battery is on series. The voltage increase. But if it is on parrallel the mah/Ah increase. Which in the case of lipo it is configure as series.
The series and parallel doesn't matter. it is the total capacity that matters. We are feeding 700mAh to fill one battery of 5200mAh . If we charge 2 batteries of 2600mAh connected in parallel, then 2600+2600=5200mAh.
Robojax so therefore the energy calculation of lipo are differ from the other .?
No. it is always the total capacity. The charger can supply in total (for example) 700mAh. You can feed it any ways you want.
Hey bro. I have a 3s 11.1 v lipo battery. The third cell is dead( solid 0v). Is there any ways I could recover my cell?
when battery is bad, it is done. you need chemically to restore it.
@@robojax but how do I restore it chemically
@@robojax I bought a new battery
@@robojax in mission planner I was testing the motors and gave a 93% output. After 4s the esc got burnt and smoke was comming out. No damage to anything other that esc. So if I give full throttle during my flight then all the esc will be burnt?
I have lithium battery 1500 mah. its been 2 hrs since i charge but still 2 red light and 1 green. is this normal?
some time cells do not charge at the same rate. but sometimes one cell get damaged. if the light doesn't change, then something is wrong. most probably the battery is bad but also possible the charger gets damaged. so if you have multimeter, check the voltage of each cell and see if one is damaged (low voltage). see this video to learn about each cells and wiring ua-cam.com/video/Ogc0E7n1jgI/v-deo.html
Are this charger auto cut if battery full charge??
yes. That is what charger does. If it doesn't stop, the battery gets damaged. When you connect battery, the lights get Red and when fully charged, the LED for each cell will go green.
Does it balances the batteries
It is balanced charger meaning it charges independently each cell and start or stop the current accordingly.
When i charge my 1 cell and 3 cell turns red but 2 cell did not lit up what does that mean?
it means either battery is dead. but also possible that charger is bad. to make sure, try charging another battery to make sure charger is in good shape.
Will the charger turn off once it is done charging?
yes it does. It will go solid green. Solid green means no current goes to battery. That's why when battery is not connected, it is all solid green.
@@robojax I charged my 2200mah 3 s for 4 hours. Not a single light turned green. Is that a problem cause I just got this charger
2200 ÷ 700 =3.1, so it should be 3.1 hours. Yes the charger could be bad if the battery is okay.
How long does it take to charge 2s 500mah lipo?
this charger can charger at 700mAh so divide 1700mAh ÷ 500mAh and it will give you the time in hour.
im using this on 18650 2s2p...kinda hot at 40c...normal?
I have never used 18650 and don't know how to use it with that.
I plugged my 11v battery in upside down, it started smoking and is now stuck on the right red, help
It must be dead then
@@robojax the green is on too
if you can't charge with this now, you can't repair this.
Only one light on cell 3 is on is mine broken?
May be the battery is bad or the charger. Yet it with different item
How much time it takes to charge my 2200 mAh battery
I looked at the video making sure I did not miss showing the calculation. I have explained it in video even I have used calculator to calculate it. Please watch and do not escape.
Will this charge a 3s 2200mh 25c?? Help!!!!
25C means this battery can supply 25A constant (C) and has nothing to to with charging. yes it can. I have shown and explained in video. This charger can charge at 700mA or 750mAh (I forgot, you watch the video to find out) so 2200mAh ÷ 750mA=2.9H so it will charge it in about 3 hours.
@@robojax Thank you very much ur the men!
My 2light turns on earlier than my first light
Same, does anyone know why this is?
Can i charge a 3s lipo battery 8000mah?
the capacity of 8000mAh does not matter. this can charge up 700mAh charge. It can charge 2S and 3S which yes it can. But you have to calculate the time, 8000/700= 11.4 hours is the charge time. So if you don't need it quickly this will work in about 12 hours. But for such battery you might need 2000-5000mAh charger to do it quickly like in 2 or 3 hours.
Yes 3000mAh (3A) charger can charge fast. 8000 ÷ 3000= 2.6 hours. Just divide the battery capacity to charger's charge capacity.
Manual says it charges with 1600mA not 700
impossible. it is written on it. they lie.
Why my battery still red after 4 hours charge
If you did the math and the times has passed, two possibilities 1-dead batter 2- dead charger. So you need another battery and/or another charger to find the problem. Of course you can check it will multimeter but it is hard for me to explain.
Can i charge 3s 11.1v 4400 mah li-ion batteries??
yes you can. It can charge any 3S battery. the amount of current this charger provide is 700mA so 4400mAh÷ 700mA = 6.3H so it will take about 6.5 hours to charge your battery.
can it charge a 5000 mah 3s lipo?
cause i read from the seller that it can charge up to 2000 mah
I believe I explained in the video and even did the calculation. Please get answer from the video. I answer questions if not answered in the video.
@@robojax oh u could just type "yes" and save urself time and a like! But now see what u've got? A dislike and time loss
Why? Because I guided you? Amazing
if you need to charge your battery and im very serious pull the car up and down a road and it slightly charges it 3 seconds of drive worth
only one light is on with mines
so it can either charges ONLY one cell or, the LED (light emitting diode) is bad. So leave the battery for charge and then check your battery's each cell. If all cell have charge, then only the LED is bad. If you see all cells are not charged, the the charger is bad.
2 cells are at 4.4 was even higher!!..and 3 was like zero
bought a parallel board now buying new charger n batts..smh..im new but its bin a bummer ..so i basicly have all these busted batts ....even if its not swollen are they unsavable?
Once LiPo gets bad, you can reverse it. They are done.
At 4:18 you plugged the batt in reversed. Black wire should have been to the right side.
the color on JST-XH has no standard. It is a connector that you can't connect incorrectly.
That was wrong
what?
Terrible video, so much disinformation, the host doesnt know what he is talking about.
Thank you. I believe you came to conclusion at the beginning of video. Watch till the end.
ёр инглиш охуенный )))))))))))))
Я знаю. Спасибо.
your calculations are totally wrong if you have a 5200mah 3 cell every cell has 5200mah
No. when you read 5200mAh, it is the total capacity of battery. Drone of RC car doesn't draw current from each cell rather from just 2 wires. it is the charge wires to the individual cells that get separate voltage and current and that is to be able to chemically charge each cell based on it's own condition.
@@robojax each cell has indeed 5200mAh, but rating at voltage of one cell (3,7V nominal). In serial stack You do not add the capacity, you add the voltage. The 3S packet consisting of 3 cells, each with capacity of 5200mAh still results in 5200mAh, but at 11,4V nominal voltage
.
That is why the capacity rating of a whole packet is the same as for one cell.
And yes, your calculation is simply "badshitt bananas". The packet (empty) should charge to full in around 7-8 hours.
You should learn the basics first, before you try to teach others.
I know, archeo digg site. but i just had to.