Inwo
10 kW
Picked up a few hundred prismatic cells. Us made international battery.
~ 4 years old. Seem to be 60-80ah.
I think I'm killing them, or at least mutilating the corpse, if the are already dead.
The first batch yielded 80%. Brough them up slow. About 1 amp. Too fast?
Then using 6 single cell 10a chargers, topped them off. Discharged at 10a rate to a 2.4v dip. (about 3v actual)
The last 20pcs I left on 1a balance charger for days. Removing as they went high. They don't seem to like this at all.
Have not discharged yet, but ir is thru the roof. My hope is that I'm not getting a good reading at 1 amp rate. Discharge test will tell.
Is even 10a too low? Should I hit them hard after up to 3 volts?
View attachment 2
~ 4 years old. Seem to be 60-80ah.
I think I'm killing them, or at least mutilating the corpse, if the are already dead.
The first batch yielded 80%. Brough them up slow. About 1 amp. Too fast?
Then using 6 single cell 10a chargers, topped them off. Discharged at 10a rate to a 2.4v dip. (about 3v actual)
The last 20pcs I left on 1a balance charger for days. Removing as they went high. They don't seem to like this at all.
Have not discharged yet, but ir is thru the roof. My hope is that I'm not getting a good reading at 1 amp rate. Discharge test will tell.
Is even 10a too low? Should I hit them hard after up to 3 volts?
View attachment 2