First off, I'm from Cuba, so sorry my bad spelling.
I bought a 48v 20ah LifePo4 duct tape battery pack on eBay 14 month ago, I used every day around 20 miles(max 35 miles of range), the pack was performing like the first day until last week.
Two month ago I had problem with my lifepo4 48v 3ah battery charger and I replaced it for a 48v 3ah SLA battery charger(I know now that it was a mistake), and suddenly last week the battery pack got puffy(see pic 2), when I checked it out I found that the problem was the charger, it was outputting 109 volts DC(see pic 3). I don't know why but it was the cause of the super overcharged effect. I open a hole on every cell that was not open by the puffy effect to discharge the gas(pic 5).
It was a huge sacrifice for my to invert over 450usd on this battery pack, hoping it will last several years, because I live in Cuba and the standard SLA12v batteries here cost like 360usd(the pack of four) and only last one or two years at max.
I hope someone can recomend me if is a good idea to try to recover this battery pack, I measured the voltage of each cell and was the following:
3.36, 3.32, 3.34, 3.36, 3.38, 3.40, 3.40, 3.38, 3.39, 3.34, 3.40, 3.35, 3.43, 3.38, 3.38, 3.50
The whole battery pack is 54.1v (pic 4)
Supposing the battery don't finished the charging process when the problem occur, I think each cell has a good voltage, but my main concern is if the cells were damaged and if is safe to try to charge it again and use in my scooter.
Is a good idea to seal the holes and buy a new BMS and lifepo4 charger?
Thanks in advance to all you guys.
I bought a 48v 20ah LifePo4 duct tape battery pack on eBay 14 month ago, I used every day around 20 miles(max 35 miles of range), the pack was performing like the first day until last week.
Two month ago I had problem with my lifepo4 48v 3ah battery charger and I replaced it for a 48v 3ah SLA battery charger(I know now that it was a mistake), and suddenly last week the battery pack got puffy(see pic 2), when I checked it out I found that the problem was the charger, it was outputting 109 volts DC(see pic 3). I don't know why but it was the cause of the super overcharged effect. I open a hole on every cell that was not open by the puffy effect to discharge the gas(pic 5).
It was a huge sacrifice for my to invert over 450usd on this battery pack, hoping it will last several years, because I live in Cuba and the standard SLA12v batteries here cost like 360usd(the pack of four) and only last one or two years at max.
I hope someone can recomend me if is a good idea to try to recover this battery pack, I measured the voltage of each cell and was the following:
3.36, 3.32, 3.34, 3.36, 3.38, 3.40, 3.40, 3.38, 3.39, 3.34, 3.40, 3.35, 3.43, 3.38, 3.38, 3.50
The whole battery pack is 54.1v (pic 4)
Supposing the battery don't finished the charging process when the problem occur, I think each cell has a good voltage, but my main concern is if the cells were damaged and if is safe to try to charge it again and use in my scooter.
Is a good idea to seal the holes and buy a new BMS and lifepo4 charger?
Thanks in advance to all you guys.