Keep your GLACIER Portable Fridge Freezer running off the grid with this Plug-In Battery from EcoFlow. It slides into a dedicated compartment in the GLACIER and has 298Wh of power capacity to provide up to 40 hours of frozen treats, fresh food, and chilled beverages. The robust design can be charged/recharged for up to 800 cycles and still retain 80% of its power capacity. It recharges conveniently via an integrated USB-C port and has built-in battery status LED lights.