With the exception of the 18650, all our battery products utilize the safe & trusted, long life lithium iron phosphate chemistry. 12 volt batteries use four 3.2V LiFePO4 cells in series. 24 volt systems use 8 cells, and 48 volt batteries use 16 cells. You can assemble a bank of any capacity desired by using multiple batteries in parallel. We offer LFP bank storage solutions that scale up to 149 kWh per power module cabinet.