Fallingwater
1 mW
- Joined
- Sep 19, 2020
- Messages
- 18
TL;DR: the BMS has a port for charge and one for power. It can charge through the power port. Will it also balance through it?
I have a generic BMS I salvaged out of a dead e-scooter battery. I want to use it on an external battery that'll go on the stem of another e-scooter as a range-booster, in parallel with its original one.
Problem: the BMS is separate-port, and I have no need for a separate charge lead since the battery is to be charged from the main connection through the parallel arrangement.
The BMS does take a charge through the power port; logically it must for e-braking purposes, but I've tested it anyway and confirmed that the charger's light does go red if connected there. It follows that I could just ignore the charge port altogether, and charge the battery from the main connection.
I have one doubt, however: will the BMS balance the cells if it's charging through the power port, or does it specifically need an input on the charge port for balancing to activate?
Here is how I intend to wire it (right is B-).
I have a generic BMS I salvaged out of a dead e-scooter battery. I want to use it on an external battery that'll go on the stem of another e-scooter as a range-booster, in parallel with its original one.
Problem: the BMS is separate-port, and I have no need for a separate charge lead since the battery is to be charged from the main connection through the parallel arrangement.
The BMS does take a charge through the power port; logically it must for e-braking purposes, but I've tested it anyway and confirmed that the charger's light does go red if connected there. It follows that I could just ignore the charge port altogether, and charge the battery from the main connection.
I have one doubt, however: will the BMS balance the cells if it's charging through the power port, or does it specifically need an input on the charge port for balancing to activate?
Here is how I intend to wire it (right is B-).