I have a 48v 12ah lifepo4 pack. It has BMS and I want to connect it to another one. So if I am correct I need another 48v lifepo4 pack with the same cell count. But does the ah rating matter? Problem is my pack cuts out at 15a and I want more power. Should have bought a better battery to begin with but....I would just buy the identicle battery and hook it up but would it be OK to bump it up to a better battery. I like the idea of 2 batteries. Faster charging and if I crash or a battery fails I could limp home on 1 battery. What's the best. Just exact same battery hooked parallel? Also if I got them to exact same voltage, hooked them up, my pack now allows me to charge when its still hooked up so if they were wired together could I charge them like that? With one charger? Would I need a charger for double the cell count? Sorry for all the questions but the more I search the more I confuse myself or get sidetracked in other threads.