BMS & Chargers

Thought i'd continue this thread rather than create a new one as its about chargers.
I've been thinking about how i can accomplish this in the vehicle easily.
After a bunch of googling the current best idea i have is using a multi-channel 1s charger hooked up to the balance port.
Charging the cells individually should be a good option for battery health.
No DC-DC step up required.
I'll use the voltage protection in the ESC to prevent over discharge.
There's a few off the shelf options around 1A per port. I'm planning on 2 x 9000mah 6s packs to start. It certainly won't be quick but it seems easy and low cost to supply straight from the 12v system.
If it was viable some more investigation would be warranted for higher current options.

something like the below

appreciate any thoughts on why it may or may not work would be appreciated
 
What I have been noodling on for a 16S2P LiFePO4 40 amp hour battery pack is:

16s balancing board - ~$75
110V AC charger (10A DC) - ~$100
1000W 12V to 110V inverter - ~$75
 
Nick - It'll work, but if I'm following you correctly, you have to make sure that charger doesn't have a common ground - i.e. that it's isolated. I actually bought a bunch of cheap chargers to do a hybrid of what you're suggesting and what 88fiero is suggesting. I ended up going with a boost converter setup (and balance boards in the battery packs), I think that'll ultimately be easiest to implement. Though, as you say, charging will be slow; but you'll almost never need to charge much.
 
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