Expandable Capacity: DELTA 2 expands up to 2048Wh with smart extra battery, keeping your home powered on in any emergency. Convenient Recharging: DELTA 2 and its Extra Battery charge and discharge in unison. Recharging from portable solar panels, AC outlets, or our Smart Generator is easy. Fast Recharging: Charge up with DELTA 2 from 0-80% in XX minutes and 0-100% in XX minutes with AC input. Internal Storage Compartment: Get extra storage for accessories conveniently, saving space at home or on the go. Power multiple devices: DELTA 2 fits with every port you??ll ever need to power any devices anywhere, so you will always feel right. Control from anywhere: Get all the same info about battery percent, remaining recharge time, hours left, and more on the built-in screen. You can check the battery??s status anywhere from the EcoFlow app.