Hi all,
I woke this morning to no power after a week of clouds. Turns out Energus tinybms decided to stop working and failed on, and my 8s lifepo4 pack is now sitting at 9 volts. I think even the balance system of the BMS also seems to have crashed, I have 3 cells sitting in between 0.2 and 1.7; the rest are right above 2v, hard to say though given the fast voltage drop to SoC. Further, It seems it might not have done too well with over-charge either; a few of the paralleled cells are sightly bloated cell together. It even Insulted me with the low voltage alarm once I cycled power to the BMS.
A couple of questions:
Safety: I've disconnected the pack, but is there any reason for immediate concern? These cells are under my bed, and I don't have a place to dispose or store them outside my van for the next few days.
Salvage: Is it possible to salvage the cells sitting at 2.0V? Since I have a 2P8S pack I was hoping to maybe turn it into a 1P8S or a 12v so I can limp along till I get new batteries. I also assume that the whole pack is now considered trash; I shouldn't just replace the cells under 2.0v with new cells.
Disposal: Do recycling centers take LiFePo4 batteries, I see there's a mail service to dispose of them, but it seems costly.
BMS: I though the TinyBMS would be a good product considering it has a number of EV customers, is European made and was pricey. I really only went with it as it supported external current monitoring and relay cutoffs, which was important as I pull over 100Amps when I run the inverter. Any suggestions for a replacement?
Other Batteries: I'm tempted to get Battleborn after this catastrophe for the peace of mind, but for price and the space I have I would only get 1/3 of the capacity in comparison to raw cells.
I woke this morning to no power after a week of clouds. Turns out Energus tinybms decided to stop working and failed on, and my 8s lifepo4 pack is now sitting at 9 volts. I think even the balance system of the BMS also seems to have crashed, I have 3 cells sitting in between 0.2 and 1.7; the rest are right above 2v, hard to say though given the fast voltage drop to SoC. Further, It seems it might not have done too well with over-charge either; a few of the paralleled cells are sightly bloated cell together. It even Insulted me with the low voltage alarm once I cycled power to the BMS.
A couple of questions:
Safety: I've disconnected the pack, but is there any reason for immediate concern? These cells are under my bed, and I don't have a place to dispose or store them outside my van for the next few days.
Salvage: Is it possible to salvage the cells sitting at 2.0V? Since I have a 2P8S pack I was hoping to maybe turn it into a 1P8S or a 12v so I can limp along till I get new batteries. I also assume that the whole pack is now considered trash; I shouldn't just replace the cells under 2.0v with new cells.
Disposal: Do recycling centers take LiFePo4 batteries, I see there's a mail service to dispose of them, but it seems costly.
BMS: I though the TinyBMS would be a good product considering it has a number of EV customers, is European made and was pricey. I really only went with it as it supported external current monitoring and relay cutoffs, which was important as I pull over 100Amps when I run the inverter. Any suggestions for a replacement?
Other Batteries: I'm tempted to get Battleborn after this catastrophe for the peace of mind, but for price and the space I have I would only get 1/3 of the capacity in comparison to raw cells.
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