12v lifep04 300ah Battery using eve grade A cells the best you can buy it also has a built in bms capable of a max discharge of 200aph,this battery can also be charged with a max current of 150ah The bms has a nice ergonomic display giving you a visible display showing soc,discharge handling charging status the battery recycling rate is 3000 giving you an average of a 10 year lifespan The battery has a warranty of 2 years battery parameter settings are operating voltage 12.8v operating range 10v to 14.6v wattage per hour 3840wh normal capacity 300ah operating temp 0 to 50 degrees c