ricoghardforth
1 µW
- Joined
- Sep 3, 2019
- Messages
- 4
I'm trying to revive a 36v Qualcast battery for a RC mower project. Its battery doesn't charge on the original charger just flash's green after a bit indicating its fully charged. Its a 10S2P pack and I've found half the cell pairs are down to 2.6v and the rest around 3.3v. The battery is the same as in this video although from another brand https://www.youtube.com/watch?v=eHynUZ-jER4
What I want to know is if I'm very carful can I use my Imax B6 on a 1S lilo setting to bring the low cells pairs back up to the same as the rest which will then hopefully allow a 36v charger to charge and balance the pack back up to full capacity. That is if none of the cells have ben irretrievably damaged.
However I want to do this with the BMS still connected and not have to un tab any of the cells or take them out of there parallel pairs. (Not got a spot weld yet.) Does the BMS balance circuit work all the time trying to balance the cells to the same value or does this only occur during charging. Will it be fighting me trying to fight the Imax. Or does it do it similar to my Imax where it only starts balancing once the the first cell gets up to full voltage and then stops it charging any further (dumps/discharges through balance resistor I understand) until all the other cells catch up.
I'll obviously not leave it unattended and in a place where if it does go up it wont burn my property down.
What I want to know is if I'm very carful can I use my Imax B6 on a 1S lilo setting to bring the low cells pairs back up to the same as the rest which will then hopefully allow a 36v charger to charge and balance the pack back up to full capacity. That is if none of the cells have ben irretrievably damaged.
However I want to do this with the BMS still connected and not have to un tab any of the cells or take them out of there parallel pairs. (Not got a spot weld yet.) Does the BMS balance circuit work all the time trying to balance the cells to the same value or does this only occur during charging. Will it be fighting me trying to fight the Imax. Or does it do it similar to my Imax where it only starts balancing once the the first cell gets up to full voltage and then stops it charging any further (dumps/discharges through balance resistor I understand) until all the other cells catch up.
I'll obviously not leave it unattended and in a place where if it does go up it wont burn my property down.