My SLA battery was idle for a year. So tried to recharge it. Failed !
I used rain water string to top up the water. First used 12 volts to charge it. It charged a bit from flat to 1 volt.
Then I used 36 volts transformer. It charged up to 6.6 volts (3 cells) so it was half capacity. 2.2 volts . Next day it get discharged. So one day I let full 36 volt on a single cells. Reached 3.3 volts in three four hours.
Next day it got once again less then 2 volts. Tried to charge again and suddenly my transformer got burned ? Due to heat internal insulation got eroded. WTF . Dumped it.
Moral is do not let your battery get discharged for long.
I used rain water string to top up the water. First used 12 volts to charge it. It charged a bit from flat to 1 volt.
Then I used 36 volts transformer. It charged up to 6.6 volts (3 cells) so it was half capacity. 2.2 volts . Next day it get discharged. So one day I let full 36 volt on a single cells. Reached 3.3 volts in three four hours.
Next day it got once again less then 2 volts. Tried to charge again and suddenly my transformer got burned ? Due to heat internal insulation got eroded. WTF . Dumped it.
Moral is do not let your battery get discharged for long.
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