Make it a triple
Double or triple the capacity of DELTA Max to 4032Wh or 6048Wh, longer runtime for your key appliances.
Charge anytime, anywhere
DELTA Max’s Smart Extra Battery benefits from all the charging methods DELTA Max has, that means you can charge anytime, anywhere as long as your extra battery is connected to DELTA Max. Once connected, they’ll charge/discharge in unison, keeping the battery percent level across both units.
Ready for any emergency
Get a 1800W DC fast charge with EcoFlow Smart Generator (sold separately). Just plug the generator directly into your extra battery via the extra battery port. This works even when disconnected from your DELTA Max.
The Smart Extra Battery has a bright LCD screen on the front of the unit giving you all the info you need. Output, input, remaining charge and time remaining.
Approx. 40 lbs (18 kg)
18.3 x 9.3 x 11.1 in (46.4 x 23.5 x 28.3 cm)
32 to 113°F (0 to 45°C)
-4 to 113°F (-20 to 45°C)
1 year (after fully charged)
800 Cycles to 80%+ capacity
BMS, Over Voltage Protection, Overload Protection, Over Temperature Protection, Short Circuit Protection, Low Temperature Protection, Low Voltage Protection, Overcurrent Protection
Testing and certification
UL CE FCC ROHS Telec
Extra Battery Port Input
50.4V, 1800W Max (X-Stream and solar dual charging)
Extra Battery Port Output
43V-58.4V 3200W Max
Supported (sold separately)
*Please Note: The above weight, size, etc. have certain measurement errors. Please refer to the actual measurement.
Whether the product can be charged or discharged depends on the actual temperature of the battery pack.