Philaphlous
1 kW
- Joined
- Mar 28, 2017
- Messages
- 431
I think this title may be a winner.... Here's my problems
[*] Cheap 1.5A 13S charger has a resting voltage of 55.0V. I've confirmed that the cc stops when the battery hits 55v on the charger and trips into cv mode.
[*] Charger basically overcharges each cell to 4.23V and typically the voltage reaches the tripping voltage on the bms and the bms cuts the power before the charger can switch to cv mode.
[*] I need to reduce the voltage output down to 54.6V resting so that cv mode kicks in without tripping the bms to cut the charge voltage
How can I do this? There's no pot to adjust the voltage on the charger. Can I add a pot to the output line to decrease the voltage?
I basically want to figure out how I can charge the battery to its balance voltage. I believe the bms kicks in to balance around 4.16V per cell...so I'm wonder if there's a way where I can reduce my chargers voltage to go from cc to cv once it hits that 54.6V number or even slightly below that so it doesn't overcharge the cells... I really don't know how a pot works to reduce the voltage..im sure it's a variable resistance that does this? Would I be able to get one big enough to reduce the voltage by 0.4V without blowing the thing up?
[*] Cheap 1.5A 13S charger has a resting voltage of 55.0V. I've confirmed that the cc stops when the battery hits 55v on the charger and trips into cv mode.
[*] Charger basically overcharges each cell to 4.23V and typically the voltage reaches the tripping voltage on the bms and the bms cuts the power before the charger can switch to cv mode.
[*] I need to reduce the voltage output down to 54.6V resting so that cv mode kicks in without tripping the bms to cut the charge voltage
How can I do this? There's no pot to adjust the voltage on the charger. Can I add a pot to the output line to decrease the voltage?
I basically want to figure out how I can charge the battery to its balance voltage. I believe the bms kicks in to balance around 4.16V per cell...so I'm wonder if there's a way where I can reduce my chargers voltage to go from cc to cv once it hits that 54.6V number or even slightly below that so it doesn't overcharge the cells... I really don't know how a pot works to reduce the voltage..im sure it's a variable resistance that does this? Would I be able to get one big enough to reduce the voltage by 0.4V without blowing the thing up?