There didn't seem to have any protection circuit on the Jackery explorer I purchased from Harbor Freight. It started smoking when I hooked the Jackery to put some extra juice in the vehicle battery when the alternator failed and the engine needed to do some traveling to get to the next AutoZone store. The battery in my 94 GMC C3500 was down to 11.4 volts when I used a Harbor Freight battery clamps from one of the solar panels with the connection for a battery directly from the small solar panel. I had another connection that went to the 12 volt outlet. I put the ground on the negative side of the battery and when I connected the positive connection to the battery is when the Jackery started smoking and the 12 volt outlet died. I had the Jackery a short time and Harbor Freight replaced the unit. Didn't have any problems with the return. I also let Jackery know what happened. They were also very nice and timely in giving me support. I wish Jackery could have a hard wire option on the solar generators like the AC200 and the air plane 12 volt connection. I use that one for the 12 volt refrigerator/freezer.
You absolute legend! I thought I was up for a new battery after dusting off 3x life po4 batteries, which had spent 4 years doing sweet fa. 2/3 came to life charging but the last was spitting an error on the battery charger. Used the jump trick here... 3/3 straight back to life and charging up. Much appreciated good sir.
My son just got back from a 2 day river trip and killed his lifepo4 battery after two days of using a trolling motor. I put it on the charger and nothing. I watched this video and then connected a 12v jump pack for a few seconds then connected the charger back up and BAM! Up and charging like a Boss. Thanks brother.
For anyone with a 24V system... I connected (2) 12V AGM batteries in series to jump MY 24V system that was showing me 2.5V. Ran jumper cables with one positive clamped onto a resistor as shown in the video. No sparks and it took about 20 seconds for the inverter/charger to light up and begin charging. Thank you for this video, it was s great help.
Thank you!! I just jumped my first dead lithium with your help! Went from nothing testing it to jumped it with 12 volt AGm and now she’s charging and started at 11.3/11.4 ..thanks a lot
Thanks for showing all these options. I was away from home and had to scrounge a way to do this to my ‘house’ battery in our van camper, using items scrounged from my son in law’s garage. He had one of those ‘dumb’ circuit testers with the light and alligator clip, and I had a separate small 12v 5aH battery. Made it work by tickling a wired-on 12v outlet while the solar panels were hooked up and ready to charge via a different connection. Bravo! Saved my bacon.
Excellent video, as usual. It's worth pointing out that the battery voltage never was zero. The cells inside, usually in a 4S configuration, were simply down to whatever voltage (often 2.5v each) that the BMS is configured to shut off at. The battery cells were at 10v but the BMS turns everything off to avoid discharging the cells too low, which will damage them. All it takes is a small amount of forced current to bring the voltage above that threshold, waking up the BMS and enabling the charging mosfets to feed current into the cells. I learned this lesson with a portable power station that "died"...2 mins plugged into the automotive accessory charger in my car woke up the BMS and charged the cells enough that the AC wall charger could do its thing.
Hi, I have a 48 Volt 10 AMP battery that will charge for around 5 minutes then when I use the electric bike it will die very very quickly within 15 seconds how do I revive that battery. It does have a built in headlight and that's the only way that I can think of to discharge it. Or should I get another 48 Volt good battery and just go positive to positive negative to negative any help would be appreciated thank you Andrew
@@drewgsands that problem sounds like an imbalance between the packs of cell within the battery. Most likely one of the groups of cells is very close to the 4.2 volts upper range cut off. whereas all the others are at a much lower voltage maybe around half way or towards the bottom end of the cut-off voltage. This is caused by one or more individual cells in that small group is chemically damaged and has very different 'internal resistance' small differences between cells when the battery is factory built, can over time become exaggerated and the divergence leads to one group becoming fully charged or empty, way too early before the others. So the BMS battery management system detects this and safely shuts off the charging. otherwise it could lead to an explosion. Batteries can be damaged by running them down to empty and leaving them in this condition in long-term storage. Always store at around 60% state of charge. If a cell is seriously damaged, it maybe possible to cut it out and solder in another that is exactly matched the the capacity end internal resistance of the remaining good cells. Getting a good match is important but could be difficult and expensive in time or Labour charges. Probably best to buy a new battery. Sorry
Just tried this with a dead lithium motorcycle battery and it worked! Thanks, you're a lifesaver. I used the stripped ends of a 12v wifi power cable I no longer needed!
Hey hobo tech, thank you so much for the tip on jumpstart in lion battery. I am out in the middle of nowhere on Vancouver Island and it’s cold. Now I have a battery and I have heat and light. Thank you very much, Jim.
I left my disconnect on in the RV and both my lithium’s died. I hooked up the generator and thought they were charging. Batteries only lasted for 2minutes. The dealership had a great tech that said they needed to be hump started. Thanks for confirming! I’m back online ;)
Sound information in simple language that 90% plus can comprehend the info. Nice presentation skills, I learned yech points and presentation style, thank you!
Method 1) 6:38 - Is the -VE clamp just momentarily on the NEG terminal, or do I leave it clamped? Method 2a) 8:02 - Aren't we supposed to connect the +ve and then touch the -ve terminal? Method 2b) 10:00 - This just worked for me! Thank You HT! The Li Time manual suggests two methods for waking the battery up. 1) Using a "zero volt charger". How many of us actually *have* a 0V charger? 2) Connecting a 12V solar panel + charge controller. Clearly, it is not "0V" that does the trick, since the panel+SCC obviously put out 12V, and not 0V. Someone on another YT video suggested that the battery was shipped with the BMS disabled. I doubt this is the case, as my battery does not have Bluetooth. Also, when it was 'jumpstarted', my charger showed 11.9V. It's now being charged at 0.05C (5A).
I have a cheapo 60v 5a charger that I use to jump my LiFePO batteries when needed. I use wall power but have also used my EcoFlow River Pro to power the charger. Most chargers need the source of input voltage to be ~5v about that of the deleted battery. I needed the 60v charger to get my LiFePO going. Works like a charm. I also make multitude of connectors for many scenarios. M4 connector to Anderson PP (APP), APP to cigarette lighter, etc. I use my chargers with ring connectors and M4 connectors to charge through my DIY solar generator setup using its solar input connection.
Hey hobo tech, thank you so much for the tip on jumpstart in my what’s the battery. I am out in the middle of nowhere on Vancouver Island and it’s cold. Now I have a battery and I have heat and light. Thank you very much, Jim.
Great video. I have a small adnjustable power supply that I use for this purpose. The issue I run into a lot is I use some 24v batteries and use the 12/ 24v chargers for them. If the 24v batteries get too low the charger thinks it's a 12v battery that is fully charged. All I have to do is get that momentary voltage boost and then the charger knows it's a 24v that needs charged.
I wish I’d seen this a year ago. I got rid of a nice LifePO4 power bank (can’t remember brand, , but like your Jackery) that cost me $400 3 years ago, but only lasted 2 years (supposed to last 10). It was just out of warranty, and would not respond to its charger. I got another charger with the same result. So I figured the battery was dead, and I wanted to replace it, but it was complicated inside! I just bought a new one that had two charging inputs, thinking the charging circuitry went out. It’s possible, but now I think it was just the BMS! Now I know what to try before discarding. Thank you!
I have all of this stuff except for the Jackery. But since I didn't know about these, I used a 100-watt 18-19v solar panel and connected it directly to the LPO4 battery and it immediately took it over 10v even though it was cloudy day. But HAD I KNOWN I would've used the handy little jump starter. So much easier than moving the battery around. So thank you so much.
Great video explanation. I bought a 48v 30Ah LiTime battery and it was set to "off" when it arrived. My lithium charger wouldn't come on to charger the battery when I hooked it up. I used my old 12v car charger to wake it up and it i did. Then hooked up my Lithium charger to charge the battery and all good.
Thanks Professor as a woman that loves tinkering you just saved me . I am trying to teach women basic if your in a situation what would you do. Some will be stranded . Others of like minded learning will love this. I've missed you sorry haven't been on much. Have to go over to computer to channel. But you a coffee. Have a great day. Thank you. Wish you were closer.
Great video. Was thinking of getting a lifepo4 for my eb3a to up the capacity. Wasn’t aware of needing to jump start if it goes dead. Good to know so I’ll be prepared. Thx.
Many thanks for this helpful video.. i have braille g20 lithium ion battery 2 month old only, i left the car for 45days, trying to start it but the battery looks dead, checked it 0.16V, i have lithium jump starter, before i jump start it I contacted Braille technical services, they said "You will immediately kill a lithium battery if you jump start it from another battery", so I was very confused, i watched that video and i take the risk 🥲, the car is running now for 4 hours then switched off and on .. looks great, i really don't know if i damage it or not😂😢, but i think this professor he knows what he is doing ❤
😅Thanks for this, after I waded through all the other b.s. I finally found this fix which was simply and succinctly explained and of course worked within seconds I used a lead acid jumpstarter with no problem that I can see.
Hi Prof Hobo, thanks for your input, great video - well appreciated 👍 Through all the videos and information on internet, we get a lot of education 😉. Cheers
in one case I had to break open the sealed case, disconnect the BMS and connect the battery charger directly to the battery bus bars. Once it reached 12V, I reconnected it all up again and the battery continued to charge to 14.4 V. I then re-sealed the case.
I did that but it does nothing when hooked back up to the inverter of the eb3a I think the bms is fried on my unit the batteries are good the bms just won't let a charge in or power out.
First time viewer here. Great info and very well explained, but that outro had me in stiches and earned you a sub! looking forward to more great content.
There's a wide selection of solar chargers that will 'wake up' a lithium battery where the BMS has gone into low voltage protection. It's not something a lot of people consider when buying, but at the top shelf end of things Victron will do it and at the mid range tier Renogy branded chargers will if configured appropriately.
21v lipo battery of my tineco floorwasher was completely gone. I was buying another one (€70) and after I saw your video. I attached a 20v wall power supply for 30 seconds. Washer have a base to recharge. After insert a few time the washer into the base the charge finally started. Probably some second more was enough for starting at first try.
I was quite unhappy to get brand new li time 12.8v 100A batteries delivered in the shutdown mode. I cannot connect Bluetooth. The terminals have only 3 voltage. I thought a lithium-ion battery charger would wake up the battery, so went to homedepot got a Dewalt 10A lithium charger, the charger not able to recognize the battery due to no voltage (yes after connect with charger, the 3 voltage dropped to 0.7v!!). Your video shows a car battery jumper would do the trick. I happen to have one around, I connected the negative first, then connected positive and clicked the jumper “boost” and a beep from my jumper and all jumper lights turned off. I had no idea if the LiTime woke up or not until o connected Dewalt charger and started seeing 9A current flowing into the battery!!! I also able to connect Bluetooth without any glitch. The app is actually pretty neat. I don’t know why the app got only 2 out of 5 review stars. Thank you for your video !
The wall adapter method works great. It doesn't even have to be a battery charger or battery or whatever. Two clip leads and a little pokery-jiggery and you are done. Nearly all wall adapters for the misc devices you might have lying around the home are either 5VDC or 12VDC. And all such adapters are current limited (usually from between 300mA to 2A or so), short circuit protected, and typically 'hicup' on a short (retry every few seconds continuously). So just find an appropriate wall adapter lying around in the house, read the label to make sure the output voltage is reasonable, and you can connect it directly to the battery without any resistors or anything else to jump start it. If you happen to have a little 300mA current limited wall adapter, It is literally impossible to damage anything. (The voltage varies a bit on these wall adapters, so use a multi-meter to check that its reasonable even if the label says 12V. But hey if the battery is dead and below 10V, then any "12VDC" wall adapter will do the job).
Li-polymer batteries suffer from the same problem. You can jumpstart a dead 9v exactly the same way... but it's much easier... as all you have to do is touch the terminals together for a few seconds. The best solution is to make sure every charger you buy from now on includes support for lithium ion batteries i.e. Won't assume zero voltage means the battery is dead. BTW: You get less failures on these 9v batteries if you slow charge them. Fast charging is convenient but the failure rate roughly doubles. Whichever charging method you prefer (slow or fast) try to stick to it... as switching methods all the time accelerates battery failure. Glad someone is talking about the problem and explaining it... as a lot of people seem unaware that it exists or is an issue e.g. My ReZap slow charger doesn't support Lithium batteries and despite being programmable the manufacturer has not bothered to update the charger to support it... and appear to have no plans to do so. They said lithium ion batteries (AA/AAA/C/D/9V) are not very common. So why design a programmable charger? Maybe they'll change their minds eventually? In the meantime you're forced to use other cheaper chargers to jump start the charging process before switching to the slow charger. That's annoying. 🙂
@@cooflypower Power stations are designed to power up when they have all of their power depleted. He jump started a battery's BMS with a power station, which then allowed it to be charged like a power station. If the power drops to zero there's no power to turn on the BMS so ithe battery can be charged.
I'm glad to see you're still there I killed a Jackie when the new ones and it's smoked and it'said it back to company haven't got it back yet Gosh me about 1500 but oh
30 Ohm Resistor: amzn.to/3Fpy3fN
Continuity Testing Light: amzn.to/41SppzW
Cigarette Lighter Plug: hobotech.tv/amazon/#Solar-Adapters
Jackery 12v Jumper Cable: gohobo.io/jackcable or gohobo.io/jzon
AmpereTime (LiTime) Battery: gohobo.io/ampere use code HOBO3 or HOBOTECH
---
DISCOUNT CODES on SOLAR PANELS - GENERATORS - REFRIGERATORS : hobotech.tv/amazon
grate experiment that works. Hobotech can you imagine how many people threw their batteries thinking it was completely dead.
There didn't seem to have any protection circuit on the Jackery explorer I purchased from Harbor Freight. It started smoking when I hooked the Jackery to put some extra juice in the vehicle battery when the alternator failed and the engine needed to do some traveling to get to the next AutoZone store. The battery in my 94 GMC C3500 was down to 11.4 volts when I used a Harbor Freight battery clamps from one of the solar panels with the connection for a battery directly from the small solar panel. I had another connection that went to the 12 volt outlet. I put the ground on the negative side of the battery and when I connected the positive connection to the battery is when the Jackery started smoking and the 12 volt outlet died. I had the Jackery a short time and Harbor Freight replaced the unit. Didn't have any problems with the return. I also let Jackery know what happened. They were also very nice and timely in giving me support. I wish Jackery could have a hard wire option on the solar generators like the AC200 and the air plane 12 volt connection. I use that one for the 12 volt refrigerator/freezer.
Hi, how do I jump start a 48v lithium battery
Thank you so much, you gave me the confidence to jump start my van’s lithium battery and helped me restore my power! 👍🏼
You absolute legend! I thought I was up for a new battery after dusting off 3x life po4 batteries, which had spent 4 years doing sweet fa. 2/3 came to life charging but the last was spitting an error on the battery charger. Used the jump trick here... 3/3 straight back to life and charging up. Much appreciated good sir.
My son just got back from a 2 day river trip and killed his lifepo4 battery after two days of using a trolling motor. I put it on the charger and nothing. I watched this video and then connected a 12v jump pack for a few seconds then connected the charger back up and BAM! Up and charging like a Boss. Thanks brother.
For anyone with a 24V system...
I connected (2) 12V AGM batteries in series to jump MY 24V system that was showing me 2.5V. Ran jumper cables with one positive clamped onto a resistor as shown in the video. No sparks and it took about 20 seconds for the inverter/charger to light up and begin charging.
Thank you for this video, it was s great help.
thanks man, unfortunately don't have any other batteries available, will buy the Victron charger
Thanks!
This video saves lives.
It just worked with mine using a 12v drill battery as the quick starter thanks.
Thanks!
Worked a treat mate well explained 👌👍
Thank you!! I just jumped my first dead lithium with your help! Went from nothing testing it to jumped it with 12 volt AGm and now she’s charging and started at 11.3/11.4 ..thanks a lot
This video saved my a$$ big time. Thankyou times a million.
Super useful video, I'm sure this will save a lot of headaches for people
Thank you!!!
Thanks for showing all these options. I was away from home and had to scrounge a way to do this to my ‘house’ battery in our van camper, using items scrounged from my son in law’s garage. He had one of those ‘dumb’ circuit testers with the light and alligator clip, and I had a separate small 12v 5aH battery. Made it work by tickling a wired-on 12v outlet while the solar panels were hooked up and ready to charge via a different connection. Bravo! Saved my bacon.
Excellent video, as usual. It's worth pointing out that the battery voltage never was zero. The cells inside, usually in a 4S configuration, were simply down to whatever voltage (often 2.5v each) that the BMS is configured to shut off at. The battery cells were at 10v but the BMS turns everything off to avoid discharging the cells too low, which will damage them. All it takes is a small amount of forced current to bring the voltage above that threshold, waking up the BMS and enabling the charging mosfets to feed current into the cells. I learned this lesson with a portable power station that "died"...2 mins plugged into the automotive accessory charger in my car woke up the BMS and charged the cells enough that the AC wall charger could do its thing.
Ah... so the BMS disconnects it. Thanks for the extra info.
And thanks for the video HT!
Hi, I have a 48 Volt 10 AMP battery that will charge for around 5 minutes then when I use the electric bike it will die very very quickly within 15 seconds how do I revive that battery. It does have a built in headlight and that's the only way that I can think of to discharge it. Or should I get another 48 Volt good battery and just go positive to positive negative to negative any help would be appreciated thank you Andrew
@@drewgsands that problem sounds like an imbalance between the packs of cell within the battery. Most likely one of the groups of cells is very close to the 4.2 volts upper range cut off. whereas all the others are at a much lower voltage maybe around half way or towards the bottom end of the cut-off voltage. This is caused by one or more individual cells in that small group is chemically damaged and has very different 'internal resistance'
small differences between cells when the battery is factory built, can over time become exaggerated and the divergence leads to one group becoming fully charged or empty, way too early before the others. So the BMS battery management system detects this and safely shuts off the charging. otherwise it could lead to an explosion. Batteries can be damaged by running them down to empty and leaving them in this condition in long-term storage. Always store at around 60% state of charge.
If a cell is seriously damaged, it maybe possible to cut it out and solder in another that is exactly matched the the capacity end internal resistance of the remaining good cells. Getting a good match is important but could be difficult and expensive in time or Labour charges. Probably best to buy a new battery. Sorry
Thanks for making my day! I know I can always count on you to help with stuff like this!
Great demo!
Just tried this with a dead lithium motorcycle battery and it worked! Thanks, you're a lifesaver. I used the stripped ends of a 12v wifi power cable I no longer needed!
Just tried it on an Eco-worthy 12.8v 280Ah battery that was showing .11v and it worked great! Thank you, you are a genius!
Hey hobo tech, thank you so much for the tip on jumpstart in lion battery. I am out in the middle of nowhere on Vancouver Island and it’s cold. Now I have a battery and I have heat and light. Thank you very much, Jim.
I left my disconnect on in the RV and both my lithium’s died. I hooked up the generator and thought they were charging. Batteries only lasted for 2minutes.
The dealership had a great tech that said they needed to be hump started. Thanks for confirming!
I’m back online ;)
Thank you HT! You rock. I learned something today! Thanks again!
Very valuable info - thank you for sharing!!
A Big thanks ❤
Sound information in simple language that 90% plus can comprehend the info.
Nice presentation skills, I learned yech points and presentation style, thank you!
Method 1) 6:38 - Is the -VE clamp just momentarily on the NEG terminal, or do I leave it clamped?
Method 2a) 8:02 - Aren't we supposed to connect the +ve and then touch the -ve terminal?
Method 2b) 10:00 - This just worked for me! Thank You HT!
The Li Time manual suggests two methods for waking the battery up.
1) Using a "zero volt charger". How many of us actually *have* a 0V charger?
2) Connecting a 12V solar panel + charge controller.
Clearly, it is not "0V" that does the trick, since the panel+SCC obviously put out 12V, and not 0V.
Someone on another YT video suggested that the battery was shipped with the BMS disabled. I doubt this is the case, as my battery does not have Bluetooth.
Also, when it was 'jumpstarted', my charger showed 11.9V.
It's now being charged at 0.05C (5A).
Professor, welcome back from your desert vacation, enjoyed those videos. Thanks for the restart with a test light. Had not thought of that technique.
Thank you for keeping it simple
You’re simply the best. Clear inventive informative helpful creative… I’m running out of words!! Ty ur making my world a better place 👍
That was an amazing important video! I have not seen that covered anywhere else! But I bet it will be soon! Thanx!
I have a cheapo 60v 5a charger that I use to jump my LiFePO batteries when needed. I use wall power but have also used my EcoFlow River Pro to power the charger. Most chargers need the source of input voltage to be ~5v about that of the deleted battery. I needed the 60v charger to get my LiFePO going. Works like a charm.
I also make multitude of connectors for many scenarios. M4 connector to Anderson PP (APP), APP to cigarette lighter, etc. I use my chargers with ring connectors and M4 connectors to charge through my DIY solar generator setup using its solar input connection.
You sir, are awesome for this video!!!!
Very good explanations tks
Hey hobo tech, thank you so much for the tip on jumpstart in my what’s the battery. I am out in the middle of nowhere on Vancouver Island and it’s cold. Now I have a battery and I have heat and light. Thank you very much, Jim.
Thanks for this video, I had a strong suspicion that my bluetti wasn't really dead dead but just needed a little jump start. Saved me a lot of money!
Great , easy to understand video .
Very useful tutorial! Great idea for a video
Hello Professor
Good video. Thank you for the tip.
Wow!!
Thank you.
Good to know, thanks professor!
Thanks, good to know !
Great Information, Great Video
Thank you
Great video. I have a small adnjustable power supply that I use for this purpose. The issue I run into a lot is I use some 24v batteries and use the 12/ 24v chargers for them. If the 24v batteries get too low the charger thinks it's a 12v battery that is fully charged. All I have to do is get that momentary voltage boost and then the charger knows it's a 24v that needs charged.
Dude, how cool are you .. thank you, great tutorial. Thanks again.
Now I know what too do . Thanks Mon
Thank you very much! You have saved me money today! Thank you sir!
excellent video, thank you!
I wish I’d seen this a year ago. I got rid of a nice LifePO4 power bank (can’t remember brand, , but like your Jackery) that cost me $400 3 years ago, but only lasted 2 years (supposed to last 10). It was just out of warranty, and would not respond to its charger. I got another charger with the same result. So I figured the battery was dead, and I wanted to replace it, but it was complicated inside! I just bought a new one that had two charging inputs, thinking the charging circuitry went out. It’s possible, but now I think it was just the BMS! Now I know what to try before discarding. Thank you!
Thanks man! Literaly just used jumper cables off my vehicle starter battery and it worked! You're a life saver!
Thank you Professor once again for another great tip, it worked for me with no problems
It's works ! Thanks a lot!!!
Thank you for the information😊
I have all of this stuff except for the Jackery. But since I didn't know about these, I used a 100-watt 18-19v solar panel and connected it directly to the LPO4 battery and it immediately took it over 10v even though it was cloudy day. But HAD I KNOWN I would've used the handy little jump starter. So much easier than moving the battery around. So thank you so much.
Wow. This trick really work, it help me to fix my studio flash light's battery. Thanks!!
Wonderful sir!!!
Great video explanation. I bought a 48v 30Ah LiTime battery and it was set to "off" when it arrived. My lithium charger wouldn't come on to charger the battery when I hooked it up. I used my old 12v car charger to wake it up and it i did. Then hooked up my Lithium charger to charge the battery and all good.
12v car charger can wake up 48v Li Time battery? Good to know.
Thank you!
3. Worked with mine)
Thank You for the info...
Wow you just saved me couple of hundreds . Thank you.
Welcome back, Professor!
100% helped! Thx a ton!
Thanks Professor as a woman that loves tinkering you just saved me . I am trying to teach women basic if your in a situation what would you do. Some will be stranded . Others of like minded learning will love this. I've missed you sorry haven't been on much. Have to go over to computer to channel. But you a coffee. Have a great day. Thank you. Wish you were closer.
Thx. Very useful info.
Thanks. Looks easy.
appreciate the info! I put a lithium antigravity battery in my car and the first method did the trick for me 👍
Yes, I learned something. Options. I like options. And I liked this video. Thanks.
Excellent pro tips. Very useful. Thanks for sharing
Thank you very much for this informative video, it really helped me with my dead Lithium-ion battery!
Educational AND entertaining! WHAT MORE COULD YOU ASK FOR????
Great video
You sir saved me. Thank you for this.
Great video. Was thinking of getting a lifepo4 for my eb3a to up the capacity. Wasn’t aware of needing to jump start if it goes dead. Good to know so I’ll be prepared. Thx.
Thank you!
Many thanks for this helpful video.. i have braille g20 lithium ion battery 2 month old only, i left the car for 45days, trying to start it but the battery looks dead, checked it 0.16V, i have lithium jump starter, before i jump start it I contacted Braille technical services, they said "You will immediately kill a lithium battery if you jump start it from another battery", so I was very confused, i watched that video and i take the risk 🥲, the car is running now for 4 hours then switched off and on .. looks great, i really don't know if i damage it or not😂😢, but i think this professor he knows what he is doing ❤
Great video, thank you.
Great video Tom!
😅Thanks for this, after I waded through all the other b.s. I finally found this fix which was simply and succinctly explained and of course worked within seconds
I used a lead acid jumpstarter with no problem that I can see.
Great informational video.
👍 Cool, a life saver. Thank you!
Thanks! Your rock
Thanks Tom ! TAKE CARE..
Hi Prof Hobo, thanks for your input, great video - well appreciated 👍 Through all the videos and information on internet, we get a lot of education 😉. Cheers
in one case I had to break open the sealed case, disconnect the BMS and connect the battery charger directly to the battery bus bars. Once it reached 12V, I reconnected it all up again and the battery continued to charge to 14.4 V.
I then re-sealed the case.
i might try this. as mine wont charge
I did that but it does nothing when hooked back up to the inverter of the eb3a I think the bms is fried on my unit the batteries are good the bms just won't let a charge in or power out.
Awesome dude I'll be using this I bet ! Earned a sub and I liked the simple explanations thank you
excellent, Hobo!
First time viewer here. Great info and very well explained, but that outro had me in stiches and earned you a sub! looking forward to more great content.
Thanks for the info you have probably saved me $$$
There's a wide selection of solar chargers that will 'wake up' a lithium battery where the BMS has gone into low voltage protection. It's not something a lot of people consider when buying, but at the top shelf end of things Victron will do it and at the mid range tier Renogy branded chargers will if configured appropriately.
How come I did not find this earlier. You just saved my motorcycle lithium battery. Works great.
Your awesome you just saved my battery 🎉🎉🎉❤❤❤
21v lipo battery of my tineco floorwasher was completely gone. I was buying another one (€70) and after I saw your video. I attached a 20v wall power supply for 30 seconds. Washer have a base to recharge. After insert a few time the washer into the base the charge finally started. Probably some second more was enough for starting at first try.
I was quite unhappy to get brand new li time 12.8v 100A batteries delivered in the shutdown mode. I cannot connect Bluetooth. The terminals have only 3 voltage. I thought a lithium-ion battery charger would wake up the battery, so went to homedepot got a Dewalt 10A lithium charger, the charger not able to recognize the battery due to no voltage (yes after connect with charger, the 3 voltage dropped to 0.7v!!). Your video shows a car battery jumper would do the trick. I happen to have one around, I connected the negative first, then connected positive and clicked the jumper “boost” and a beep from my jumper and all jumper lights turned off. I had no idea if the LiTime woke up or not until o connected Dewalt charger and started seeing 9A current flowing into the battery!!! I also able to connect Bluetooth without any glitch. The app is actually pretty neat. I don’t know why the app got only 2 out of 5 review stars. Thank you for your video !
The wall adapter method works great. It doesn't even have to be a battery charger or battery or whatever. Two clip leads and a little pokery-jiggery and you are done.
Nearly all wall adapters for the misc devices you might have lying around the home are either 5VDC or 12VDC. And all such adapters are current limited (usually from between 300mA to 2A or so), short circuit protected, and typically 'hicup' on a short (retry every few seconds continuously).
So just find an appropriate wall adapter lying around in the house, read the label to make sure the output voltage is reasonable, and you can connect it directly to the battery without any resistors or anything else to jump start it. If you happen to have a little 300mA current limited wall adapter, It is literally impossible to damage anything.
(The voltage varies a bit on these wall adapters, so use a multi-meter to check that its reasonable even if the label says 12V. But hey if the battery is dead and below 10V, then any "12VDC" wall adapter will do the job).
Li-polymer batteries suffer from the same problem.
You can jumpstart a dead 9v exactly the same way... but it's much easier... as all you have to do is touch the terminals together for a few seconds.
The best solution is to make sure every charger you buy from now on includes support for lithium ion batteries i.e. Won't assume zero voltage means the battery is dead.
BTW: You get less failures on these 9v batteries if you slow charge them.
Fast charging is convenient but the failure rate roughly doubles.
Whichever charging method you prefer (slow or fast) try to stick to it... as switching methods all the time accelerates battery failure.
Glad someone is talking about the problem and explaining it... as a lot of people seem unaware that it exists or is an issue e.g. My ReZap slow charger doesn't support Lithium batteries and despite being programmable the manufacturer has not bothered to update the charger to support it... and appear to have no plans to do so. They said lithium ion batteries (AA/AAA/C/D/9V) are not very common. So why design a programmable charger? Maybe they'll change their minds eventually? In the meantime you're forced to use other cheaper chargers to jump start the charging process before switching to the slow charger. That's annoying.
🙂
I used the 2nd technique to jump my BMS. Big thanks, legend 🙏
Great vid!!!
P.S. We love you channel HOBOTECH !!!!!
P.P.S. We bought many power stations because of your reviews :)
THANK YOU AGAIN !!!!!
You jump starter old power station with new power station, haha
@@cooflypower Power stations are designed to power up when they have all of their power depleted.
He jump started a battery's BMS with a power station, which then allowed it to be charged like a power station. If the power drops to zero there's no power to turn on the BMS so ithe battery can be charged.
@@jimdoozy Professional explanation.
Tried this on my Dakota lithium battery... It's reading 0.7 volts. Jumped it and it's still not charging. What gives?
It worked for me. ,,I used the NOCO GENIUS10, 10A Smart Car Battery Charger, 6V and 12V Automotive Charger. Ty.
Great video. Good to know !
I'm glad to see you're still there I killed a Jackie when the new ones and it's smoked and it'said it back to company haven't got it back yet Gosh me about 1500 but oh