The itel Power Tank (Model: IESS-05K10N) is a portable, 3-in-1 all-in-one Energy Storage System (ESS). It integrates a 500W Pure Sine Wave inverter, a 1000Wh (1kWh) LiFePO4 lithium battery, and a 400W MPPT solar charge controller into a single plug-and-play unit. It provides clean backup power for home or office electronics without complex wiring.