Expand the capacity of the RIVER 3 Plus to up to 858Wh. Choose from two extra battery models to fit your needs: EB300 (286Wh) or EB600 (572Wh). An...

Expandable CapacityIncrease The Capacity Of DELTA 3 Plus/DELTA 3 With An Extra 1024Wh. Double TheCapacity To Fit Your Energy Storage Needs, Ideal F...

Expandable Capacity: DELTA 2 expands up to 2048Wh with a smart extra battery, keeping your home powered on in any emergency. Convenient Recharging:...

Expandable capacity Increase the capacity of DELTA 2 Max with an extra 2048Wh. Triple the power 2-6kWh expandable capacity to fit your energy stora...

Expandable capacity: This add-on battery connects with a DELTA Pro to double total capacity to 7200Wh. Connect two of them to DELTA Pro for a stagg...

The brand-new battery and DELTA Pro 3 are sleek and space-saving, easily stacked, removed, and positioned. Expand all the way to an industry-leadin...

Expandable capacity - Increase the capacity of DELTA Pro Ultra with an extra 6kWh.*If you've purchased three or more battery packs, please contact ...