OSACL BP3600 Expansion Battery 3600Wh LiFePO4 for PowerMax 3600/6000Seamlessly compatible with OSCAL Powerstation. Equipped with the Powermax 3600 and Powermax 6000 expansion port, designed for plug and play convenience. Weighs only 80 lbs, portable yet powerful. The PowerMax 3600 6000 can be paired with up to 15 BP3600 batteries. Feature Specification Details Next Generation Battery Cells Advanced lithium cells with over 3,500 cycles to 80% capacity, 15% longer lifespan than conventional cells, and stable performance