Hi eSk8 community!
I’ve been doing a lot of research lately and I’ve decided to start deciding on parts I want to get to put together for my board. So far it looks like an Ollin Board Company 200kv motor, a VESC, and 20 LG HG2 18650 batteries. Right now, Iv’e got a thunder AC lipo and lithium ion battery charger to charge batteries for my race quad. I’d prefer not to buy a new charger so I’m looking to configure my eboard pack in a way that would allow me to charge the battery in sections. The way I see it, I’ve got a couple of options. I could put 5 cells in series as a single pack (with balance connector of course) and put that in series with another identical pack. Then, I’d put this 10s pack in parallel with another one identical to it. The upside to this is that in order to charge I could just take apart the 4 separate 5s1p packs and balance charge them one at a time. The downside, is that the wiring would be messier. I don’t like the idea of having to splice two 10 gauge wires together for both positive and negative to get them to an XT90 connector (that’s what’s already soldered onto the VESC I bought). The other way I could do this, is solder together quantity 10 1s2p packs and put all of them in series. This would be a lot cleaner for wiring, but charging 10 separate batteries would be a hassle. Also, I’m not sure what the safety concerns with batteries configured like this are. Can I just solder two 18650’s in parallel with nickel solder tab and just charge them like I would a 1s lipo pack? Do I need a balance connector (leaning towards no, but I’ll put the question out there)? If I keep all my batteries the same voltage and make sure everything is equal in a pack do I need a BMS (really don’t want to incorporate one I’d rather go through all the work of charging individual packs). Any help is greatly appreciated.