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EcoFlow DELTA 2 Smart Extra Battery
1,024 Wh that works with 4 stations, reaching 2,048 Wh in the largest setup.
- 1,024 Whcapacity
- 21 lbweight
- LFPbattery type
By the Power Station Chart team, from the maker's compatibility pages. Last reviewed October 31, 2026.
The DELTA 2 Smart Extra Battery in brief
One battery per station is the rule for the DELTA 2: EcoFlow says it connects to a single Extra Battery, which lifts its 1,024 Wh to 2,048 Wh. The same 21 lb LFP module is also listed for the DELTA 3, DELTA 3 Plus and DELTA 3 1500, each with a limit of 1.
Stations it works with
- EcoFlow DELTA 2Up to 12,048 Wh in total
The maker says: "The DELTA 2 can be connected to one Extra Battery"
- EcoFlow DELTA 3Up to 1Check price on Amazon
The maker says: "Support DELTA 2 EB, DELTA 2 Max EB, DELTA Pro 3 EB, and DELTA 3 EB"
- EcoFlow DELTA 3 PlusUp to 1Check price on Amazon
- EcoFlow DELTA 3 1500Up to 1
Extra batteries are locked to generation and connector. How the rules work by brand.
Where these figures come from
3 documents
- EcoFlow, manual, read October 31, 2026
- EcoFlow, manual, read October 31, 2026
- Footprint Hero, secondary, read October 31, 2026