LifePO4 Battery No Voltage - Won't Wake Up - Try this fix first

[@jasonito1723]

Thanks for this. Jumped my 24s with 4- 6v's and worked like a charm. Had to have generator running and hooked up immediately. Charged up gtg

[@IAmYellowDuck]

Thank you for this! I thought I had smoked my motorcycle battery but this revived it.

[@thomastaylor8657]

Some bms systems have a delay on the " incoming power" for like a second its free to pump in then the bms starts protecting. This fixes ryobi batteries too you can tap a ryobi back in. Its actually time, 3 taps is 3 intervals of bypass

[@capecoaster69]

good effort there!

[@darrengrapp8174]

Thank you, saved my trolling motor 230ah lithium "your the f%@$&n MAN!!!!!!!

[@herblapp6134]

I notice you look like your charger is a pretty standard one. I have one andused on my deep cycle lead acid batteries for charging. I swapped the lead acid out for lithium ion iron phosphate batteries.l see specialized lithium ion chargers and they're costly. Can l use my standard battty charger?

[@fullmoonadventureclub]

You certainly can. However, RV lithium iron phosphate Chargers are capable of charging at 100 amps or more. The charger that is Illustrated in this video will only charge at 5 amps so it takes a long time to charge batteries

[@naveedkhan1332]

Can I use this technique on my 48v solar battery ?

[@gpmail]

I am in a similar situation. My 12V lifepo4 drained off grid during off season and went into protection mode. Hard to tell when during last few months. I was able to reactivate it at first and started charging it off solar on a Victron smartsolar. After a day of charging sucessfully I managed to drain it again with only a small load when the sun went down. It went into protection mode again and won't wake up now. :/

[@richardhobbs7107]

@gpmail - Have had 3 (three) different power stations and 1 (one) LifePo4 battery that would not 'wake-up' with 12 volts applied from an external source. The 'external source' was both an old-school battery charger (Sears) and a standard lead-acid battery. In each case I gained access to the internals, disconnected the cells from the BMS, charged the cells separate from the BMS to > 11 volts where necessary and in each case upon reconnecting the BMS it was 'awake' and fully functional again. (In each case I had also 'shorted' the BMS with a jumper briefly once the cells were Disconnected ! to drain any residual power that may have been stored in the capacitors of the BMS.) In my inexperienced opinion the BMS itself had needed the wake-up. In one case, a Goal Zero 1000, the power station worked fine for two days after the 'wake-up' and then went dead again with the state of charge previously showing about 70%. Again I disconnected the cell-pack from the power station, checked the cell-pack (= > 11.5 volts) and without doing anything else but pressing the buttons on the station to potentially drain any stored capacitor power, I reconnected the cell pack and the station was alive and functioning again normally ! It has been fully functional since then for > two months running my frige-a-frator, an induction cook-top and being charged from my backyard solar panels. Me ? I am an EX - Air/Heat Service Tech that likes my new hobby of Off-Grid solar power to reduce my SDG&E (Southern California) home power use to about $18.00 a month. We are proud to pay (likely) the highest power rates in the USA . . . . . . 'proud' because 'we' keep re-electing the same folks that cause these high rates ! take care, rh

[@rickmengel4700]

I have a Weize 100AH lithium and I couldn't get it to take a charge, I took it to a battery shop and he hit it with 19 volts and it woke up and I could charge it. Now it's charged to 13.44 and has been there for a few days. Do you think the 19 volt zap could have hurt anything ?

[@Idontcare-g1n]

I have same battery 2 of them that all of a sudden just stopped taking a charge and they are less than 2 months old 1 months used

[@garrettcurtis6199]

I am having the exact same problem with a 280AH LifePo4 battery in my camper, except it’s brand new. The mfg suggested linking it straight to my solar bank, which I’ve done with no success. Any updates on how you got yours to wake up? I have a spare 12v battery but it’s a big boy and I’m hesitant to do the tapping method with it.

[@fullmoonadventureclub]

Nothing worked for me except the tapping method. As long as the batteries are the same voltage you should be fine. 12 volt, 24 volt, ect. Good luck and thank you for the comment.

[@richardhobbs7107]

Your 'mfg' should replace it under warranty ! I previously commented: Have had 3 (three) different power stations and 1 (one) LifePo4 battery that would not 'wake-up' with 12 volts applied from an external source. The 'external source' was both an old-school battery charger (Sears) and a standard lead-acid battery. In each case I gained access to the internals, disconnected the cells from the BMS, charged the cells separate from the BMS to > 11 volts where necessary and in each case upon reconnecting the BMS it was 'awake' and fully functional again. (In each case I had also 'shorted' the BMS with a jumper briefly once the cells were Disconnected ! to drain any residual power that may have been stored in the capacitors of the BMS.) In my inexperienced opinion the BMS itself had needed the wake-up. In one case, a Goal Zero 1000, the power station worked fine for two days after the 'wake-up' and then went dead again with the state of charge previously showing about 70%. Again I disconnected the cell-pack from the power station, checked the cell-pack (= > 11.5 volts) and without doing anything else but pressing the buttons on the station to potentially drain any stored capacitor power, I reconnected the cell pack and the station was alive and functioning again normally ! It has been fully functional since then for > two months running my frige-a-frator, an induction cook-top and being charged from my backyard solar panels. Me ? I am an EX - Air/Heat Service Tech that likes my new hobby of Off-Grid solar power to reduce my SDG&E (Southern California) home power use to about $18.00 a month. We are proud to pay (likely) the highest power rates in the USA . . . . . . 'proud' because 'we' keep re-electing the same folks that cause these high rates ! take care, rh

[@rickynaidoo2921]

Is the optimate battery charger safe to charge the lithium battery?

[@loganklavon7521]

There’s a optimate lithium it has to be that one. U know the motorcycle dealership ppl talked me into buying a lead acid optimate I learned the hard way lol them people are not always right

[@chrisfoley3320]

The issue I am having is the battery reads 12v but as soon as you hook something to it it reads 0volts. No power. Any suggestions?

[@fullmoonadventureclub]

If you connect it to another strong charged battery and it wakes up and reads 12 volts it is still low on charge. It should read around 14 volts when charged. If it is charged and it goes to zero when you connect it to something it may be a faulty cell or BMS unfortunately.

[@thomastaylor8657]

12 is empty. 14 is full