The EcoFlow Smart Extra Battery Expansion Adapter unlocks a second extra battery on the DELTA 3 Max Plus and DELTA 3 Ultra Plus power stations. Instead of a single expansion path, the adapter creates a splitter so two compatible extra batteries can plug into the same host station.

• Enables the connection of two extra batteries to a single DELTA 3 Max Plus or DELTA 3 Ultra Plus host station.
• Preserves the smart handshake between station and batteries, so state of charge stays in sync.
• Compact adapter design, keeps the wiring behind the station tidy.
• Sold as a dedicated accessory for owners who plan to grow their DELTA 3 Max Plus / Ultra Plus setup.
• Not required for the first extra battery, only for the second.

Key specs

• Type: expansion adapter (splitter)
• Compatibility: DELTA 3 Max Plus, DELTA 3 Ultra Plus
• Function: adds a second extra battery slot

The right upgrade for households or professionals who already run a DELTA 3 Max Plus or Ultra Plus and want to keep growing their storage beyond one extra battery.