So this is the reason why a lion charger has to know how many batteries are being charged (in paralel); the charging process must be stopped when the current reaches 1 ampere when 8 batteries are being charged ( 8 * 125mA). Very very! eye opening video. thanks again LS :)
I like this video very much. I have an electric bike and I'm often thinking of creating battery packs myself but I didn't have enough motivation because it is all so complicated. What you explained in this video have helped me understand a lot. BTW would you be interested to make a video about BMS (Battery Management System)? How do you install that if you have a bunch of batteries? Thanks for an awesome video!!!!!!!
Love your videos, I have to add something though. I think the resistance does not change instead due to the battery voltage rising the voltage difference between the cell and the supply decreases so the current through it also decreases. I've been charging cells like this for a long time
great video very well explained, as usual! 👍👍 a little tiny detail if I may :) is about the loud sound at the end, it feels twice louder than the video audio volume 🙏
I’m interested in charging cell phone and camera batteries with my DC power supply. Those batteries show the output voltage but only show amp hours and/or what hours which is not a measurement of the current draw, so I don’t know where to get that info. Also neither of my 2 bench power supplies allow you to set current. I have a bunch of wall wart power supplies so I usually find one with adequate voltage and use it to charge some batteries.
My bench power supply has max output volts to 17V And 2A Im trying to charge a 12V car batt lead acid When i connect the psu to batt the psu drops to 11.5 V??? And fluctuating (11.1V-12v) And amp fluctuate (0.00 to 2.99) What is wrong here?
I have a simple 4.2V 600mA power adaptor and 18650 cells that were in notebook. I checked them they all 0 volts, but I would like to revive them. Can I charge them with my adaptor (it is from flashlight)?
@@andrewkhchandepends what you mean by efficient. scientific definition would be amount of energy charged into the battery / energy spent. then I would say the slower the better, less current means less heat, so power supply will let you pick a slower if for you, more efficient means faster, then I would say the power supply will let you select a higher current but you may damage the battery or wear it faster. the biggest difference is the charger is calibrated to charge with a fixed max current value. with the power supply you can tune to the battery characteristic. but you have to cut off manually, so more likely to overcharge. you have to know what you're doing too. but it's also still possible to damage a battery using the wrong charger I'd say the "best" charger would probably be a smart one like when charging a smartphone or ev, that will automatically adapt current with battery temperature, maintaining the best charging speed/battery health compromise. unlike smartphone, zv's have active cooling which allows to push the limits, best production ev charging speed would be Hyundai/Kia with less than 20mn for 5-80%. EVs prioritize battery life over pure speed because of the price of batteries which can be up to 50% of the vehicle price, and replacing batteries under warranty (8year)is a huge loss for the manufacturer. but unlike smartphones, typical 30 miles driving/day is only 10% charge for a log range ev, which allows loger battery life . also ev with fast charging usually have at least a small buffer to allow charge to 100% with lower impact on battery health
So the power supply you used has the ability to set cv and cc having done that am I ok to leave the battery on that power supply overnight? Is the setting of cc and cv on the power supply as you show, render the power supply as a protection device.
Dramatically fantastic. Valuable information. The best method for charging any kind of battery is by power supply. It’s my experience in charging. Thanks
Use power supply, adjust volt for 4.0v, go down by current to zero, connct battery in power supply, slowly raise current till 300 mA, be in constant current. Near full charge it will change to cv. Good luck.
Raphael U : I hope a professional experience man to reply this question because I need it also. And what is the power of that diode. Some body help. Please
Charging procedure crystal clear
Good
you need a heavy schottky diode to safeguard a reverse polarity error
So this is the reason why a lion charger has to know how many batteries are being charged (in paralel); the charging process must be stopped when the current reaches 1 ampere when 8 batteries are being charged ( 8 * 125mA). Very very! eye opening video. thanks again LS :)
Thank you. This takes much of the mystery out.
I like this video very much. I have an electric bike and I'm often thinking of creating battery packs myself but I didn't have enough motivation because it is all so complicated. What you explained in this video have helped me understand a lot.
BTW would you be interested to make a video about BMS (Battery Management System)? How do you install that if you have a bunch of batteries?
Thanks for an awesome video!!!!!!!
Thank you.. please also make a video for nicd and nimh battery please
What will happen if we failedd to disconnect at 125 mA . will that cause an overheating and explosion ?
Sir can u make a video on how to make a 2200MicroFarads 400 Volts Capacitor as fast as possible plzzz....That too before 12th November Sir....Plzzz
Love your videos, I have to add something though. I think the resistance does not change instead due to the battery voltage rising the voltage difference between the cell and the supply decreases so the current through it also decreases. I've been charging cells like this for a long time
Dear Mr Ludic: Excellent video! Charging a Li-ion battery from a power supply is an excellent idea! Keep up the good work! 👍
Thank you!
Well explained! Nice if we had a circuit to automatically end charging when it sees the current fall to 125ma?
john coia - Look at BMS ICs. That means battery management system. It’s a huge field. Whole channels dedicated to the topic.
John: Buy tp4056 tiny charger module 4peices one dollar. It’s excellent module.
Cleared my confusios, thank you very much!
We always like ur videos, thanks a lot
great video very well explained, as usual! 👍👍 a little tiny detail if I may :) is about the loud sound at the end, it feels twice louder than the video audio volume 🙏
Good video
*good job*
Excellent explanation of the battery charging cycle. Thanks!
Clear!
Great video. With a good explanation thank you
I’m interested in charging cell phone and camera batteries with my DC power supply. Those batteries show the output voltage but only show amp hours and/or what hours which is not a measurement of the current draw, so I don’t know where to get that info. Also neither of my 2 bench power supplies allow you to set current. I have a bunch of wall wart power supplies so I usually find one with adequate voltage and use it to charge some batteries.
great video.
very good video, thank you so much!
My bench power supply has max output volts to 17V
And 2A
Im trying to charge a 12V car batt lead acid
When i connect the psu to batt the psu drops to 11.5 V??? And fluctuating (11.1V-12v)
And amp fluctuate (0.00 to 2.99)
What is wrong here?
I have a simple 4.2V 600mA power adaptor and 18650 cells that were in notebook. I checked them they all 0 volts, but I would like to revive them. Can I charge them with my adaptor (it is from flashlight)?
Awesome 👏 video..... always the best!! How long did it take to fully charge the battery from 3V to 4.2V ?
Thanks about 2 hours
If I use the ordinary battery charger which is plugged to the wall- socket , will the result be different??? Which is more efficient??
@@andrewkhchandepends what you mean by efficient.
scientific definition would be amount of energy charged into the battery / energy spent. then I would say the slower the better, less current means less heat, so power supply will let you pick a slower
if for you, more efficient means faster, then I would say the power supply will let you select a higher current but you may damage the battery or wear it faster.
the biggest difference is the charger is calibrated to charge with a fixed max current value. with the power supply you can tune to the battery characteristic. but you have to cut off manually, so more likely to overcharge. you have to know what you're doing too. but it's also still possible to damage a battery using the wrong charger
I'd say the "best" charger would probably be a smart one like when charging a smartphone or ev, that will automatically adapt current with battery temperature, maintaining the best charging speed/battery health compromise. unlike smartphone, zv's have active cooling which allows to push the limits, best production ev charging speed would be Hyundai/Kia with less than 20mn for 5-80%. EVs prioritize battery life over pure speed because of the price of batteries which can be up to 50% of the vehicle price, and replacing batteries under warranty (8year)is a huge loss for the manufacturer. but unlike smartphones, typical 30 miles driving/day is only 10% charge for a log range ev, which allows loger battery life . also ev with fast charging usually have at least a small buffer to allow charge to 100% with lower impact on battery health
Excellent video
❤❤❤frm odisha, India
so why do you stop at 4.2 vols and let the surface chage bleed off,doing it your way will never %100 charge it as i see it?
how come when I put my cells in 3s 12.6v with bms and charge it at 12.6v at 1.5A, the voltage never gets above 12.v?
So the power supply you used has the ability to set cv and cc having done that am I ok to leave the battery on that power supply overnight? Is the setting of cc and cv on the power supply as you show, render the power supply as a protection device.
Dramatically fantastic. Valuable information. The best method for charging any kind of battery is by power supply. It’s my experience in charging. Thanks
But it’s nowhere near 4.2 and you’re not utilizing the battery’s full capacity.
fully charged at 4.126 volts,how can that be fully charged?
Excellent explanation! Thank-you. My 3,7V Li Ion battery cuts off at 3.3V
Some gagets have the wrong charger that comes with it. It has 5V, 5.3V and sometimes 5.5V chargers.
You are a born natural, great teacher my friend. Thank you so much!
How it took to get charged ??
around two hours
@@ludicscience
If i connect more than one battery in parallel the chargeing time will be the same ???? Sorry for bad grammer
@@Not-C-418 Yes, if the powersupply delivers enough current to charge all batteries; that is 1,5 ampere per battery.
well thanks so i dont have to buy a lithium charger
Thanks great video. Just want I wanted to know!
Good job brother
How to charge the Li-ion Batteries not used for long time having voltage arround 1.2v.
And how to test those are feasible to use?
Use power supply, adjust volt for 4.0v, go down by current to zero, connct battery in power supply, slowly raise current till 300 mA, be in constant current. Near full charge it will change to cv. Good luck.
Hi, do you need to install blocking diode to avoid power supply damage from inrush current (while charging) ?
Raphael U : I hope a professional experience man to reply this question because I need it also. And what is the power of that diode.
Some body help. Please
Finally. Thank you for this.
how can i find a cheap, variable power/ current supply like that? It's a Beauty!
Buy (zk-4kx) it’s very cheap, I am using it. No need to buy expensive units. Thanks
If i have battery in parallel. My amps should 6amps?
Yes, in parallel current is multiplied by the number of cells.
Great video man, well done, thank you !
Nice demonstration!
Super video sir
Good video.
why did you choose 1.5A?
rated in the cell specsheet if you see beginning of the video
@@NawtieBoy96 it says 1.25A why use 1.5?
LOL... 8800mAh!
That one is a fake chinesse, more close to 500 mAh
Be warned. Some PSUs do not tolerate current sourcing components (like battery) at its leads. A substantial current can damage the unit.
Its the first time I hear that. Have a link with more info please?
@@ludicscience e.g. it is in Rigol DP832 user manual. Manufacturer advises to add diode to prevent reverse flow.
it is described in a document: "Active loads and the RIGOL DP800 and DP1000 Series", you can find it on google
Apple is doing it all wrong! Now I know those IPhones don't need to be $2k, if they just listened to Lucid Science. ;)
1.5 ampere? I'm not an expert but if the battery doesn't have an internal chip, it's too much
Is Chinese lithium ion battery is safe ?
Depends on the brand. Litokala is a good one.
is there are any TYPES of batteries we can't charge with bench power support?
Great video. Thanks!