The EcoFlow DELTA Pro 3 Smart Extra Battery expands the capacity of your DELTA Pro 3 power station by 4,096Wh per unit. You can stack up to two Extra Batteries on a single DELTA Pro 3 for a total system capacity of up to 12kWh, keeping your home powered for longer without constant recharging.

Built with automotive-grade LFP (lithium iron phosphate) cells, this battery delivers a rated cycle life of 4,000 charges to 80% capacity, providing years of reliable service. The plug-and-play design allows for quick and straightforward connection to the main DELTA Pro 3 unit. When paired with the DELTA Pro 3, the system supports 4,000W output and dual 120V/240V capabilities, making it capable of running nearly all essential home appliances.

The unit measures 27.3 in. × 11.6 in. × 8.5 in. and weighs 72.8 lb (33 kg). Package includes one DELTA Pro 3 Smart Battery, one Extra Battery Cable, one Quick Start Guide, one Safety Guide, and one Warranty Card. Model number ECF09DP3EB. Backed by a five-year warranty.