Hey all, I am looking to have a 7s connection of 3.7V (~26V nominal) lithium-pouch cells batteries, most likely NMC chemistry, but I am having difficulty finding affordable prices for 40-50Ah capacity. My budget is relatively high, and I found a promising vendor of XALT energies but they are charging 75$ for 1 3.7V, which is fine, but they require me to buy 16 cells at a time as per UNDOT regulations or something to that effect. Could anyone point in a direction to finding more affordable batteries, or telling me a better approach to my problem? Also, I found another distributor, Kokam, but I cannot find any information on how much the batteries cost or where to even buy them, they don't respond to my customer service emails... If anyone has dealt with them before, I would appreciate some advice.
As of right now, I am trying to drive 6 BLDC motors, rated at 6.6A, for a rocker-bogie drive train, I think that should require at least 40Ah, to guarantee an hour of run time, including running additional circuitry on board, including cameras and MCU's. Is the 7s approach fine? Any suggestions/advice would be greatly appreciated. Thanks!
As of right now, I am trying to drive 6 BLDC motors, rated at 6.6A, for a rocker-bogie drive train, I think that should require at least 40Ah, to guarantee an hour of run time, including running additional circuitry on board, including cameras and MCU's. Is the 7s approach fine? Any suggestions/advice would be greatly appreciated. Thanks!