Double the runtime of your EcoFlow DELTA Max Portable Power Station with this add-on battery that plugs into any DELTA Max. Add up to two Extra Battery units for a total capacity of 6048Wh.

EcoFlow DELTA Max Smart Extra Battery Features

Convenient Recharging

DELTA Max and its Extra Battery charge and discharge in unison. Whether you’re recharging DELTA Max from solar panels, AC outlets, a vehicle, or our Smart Generator, the DELTA Max Extra Battery will recharge alongside.

Independent in Emergencies

The extra battery even recharges directly from EcoFlow’s Smart Generator without DELTA Max. That’s more recharging options to fit any situation.

Easy to Use LCD Screen

Get all the info on battery percent, time until full, time until empty, and more on the DELTA Max Extra Battery LCD screen. Check the battery’s status anywhere on the EcoFlow app.

Need something else? Call us for other options 833-777-0940