I think this topic has been discussed before, but its a very difficult topic to search for on the forums.
I'm thinking about my next eBike battery build, maybe using no BMS, but instead charging the 13s pack with 13 individual Li-ion charging PCB's which normally run off 5v. So basically I'd run a lead from each battery + and - to the + and - of the charging board PCB and it would treat that cell or cell group as if it were an individual 3.7v Li-ion and not a 48v pack. This way there is no need for balancing with bleed resistors and no need to have a circuit board hooked up with parasitic drain that could one day kill the pack. A fuse would be used for shorts/overcurrent situations and some battery cell loggers would be used to monitor each cell groups voltage.
Any problems you foresee with this type of setup besides there being quite a few wires/connections?
Any links or sources to those that have done this type of setup before?
I'm thinking about my next eBike battery build, maybe using no BMS, but instead charging the 13s pack with 13 individual Li-ion charging PCB's which normally run off 5v. So basically I'd run a lead from each battery + and - to the + and - of the charging board PCB and it would treat that cell or cell group as if it were an individual 3.7v Li-ion and not a 48v pack. This way there is no need for balancing with bleed resistors and no need to have a circuit board hooked up with parasitic drain that could one day kill the pack. A fuse would be used for shorts/overcurrent situations and some battery cell loggers would be used to monitor each cell groups voltage.
Any problems you foresee with this type of setup besides there being quite a few wires/connections?
Any links or sources to those that have done this type of setup before?