Brand new BYD High capacity lithium batteries. Original tier 1 lithium batteries with 6000 cycles and 5 year's warranty. The BYD Battery-Box LV Flex is a lithium iron phosphate (LFP) battery pack for use with an external inverter. It is scalable from 5 kWh to 320 kWh and is also a perfect Battery for bespoke Projects and Integrated Systems.