The advantages of a Lithium-ion battery over conventional lead-acid batteries.
High energy density: more energy with less weight; High charge currents (shortens the charge period); High discharge currents (enabling for example electrical cooking on a small battery bank); Long battery life (up to six times the battery life of a conventional battery); High efficiency between charging and discharging (very little energy loss due to heat development); Higher continuous power available.
Why Lithium-iron phosphate?
Lithium-iron-phosphate (LiFePO4 or LFP) is the safest of the mainstream Li-ion battery types. The nominal voltage of a LFP cell is 3,2V (lead-acid: 2V/cell). A 25,6V LFP battery consists of 8 cells connected in series.