The DAKOTA LITHIUM POWERBOX 135 is a 12V 135AH WATERPROOF LITHIUM GENERATOR designed for off grid applications in harsh environments. The POWERBOX 135 is a Self-Heating and Dual-Purpose starting battery with 1000 CCA and a 135AH Deep Cycle Lithium LiFePO4 battery all in one. You can power a large ice fishing hut, a job site or a hunt camp. This 12V 135Ah LiFePO4 Lithium Generator can be charged with home or on grid AC power before you go out and by solar when you out on the ice or tundra. This beast has the energy to start a truck, power your adventure and has a built in 300 Watt inverter with AC plugs and USB to power your laptop, medical devices, fans or even a small fridge.