The battery must be managed as a single monolithic 12V block.
How are you planning to incorporate
BMS into these batteries exactly?
Nice deal though. At 48V (4 batteries, duh) the price would be about half of what I paid. Mind you, mine has
BMS, but that doesn't seem to justify a 100% increase in price.
I'd be temped the run these without
BMS. Sacrilege perhaps, but the RC geeks run LiPo without
BMS and that's a whole bunch more volatile. You'll just have to keep an eye on cell voltages. A Cycle Analyst would probably help. It would only give you a voltage reading of all cells in series though.
24V will be underwhelming as far as speed goes (is this for your grandmother?
). And yeah, your 48V throttle is a problem. It likely won't work. Maybe someone else knows how to run a 48V throttle on 24V, but i'd probably just buy another $15 throttle.
I don't think your motor is configured for 48V, unless there's a drive parameter I can't think of at the moment. Your motor will be rated at 720W (24V x 30A). Note that the specs for your battery list 0.5C as "optimal discharge rate". It'll do 3C for 15 minutes, so let's say you can safely discharge at 1C. That's only 20 amps. Problem is that the motor will happily draw 30 amps under full load.
That configuration looks like it's going to strain your cells.
Jeff
