Expandable capacity
Increase the capacity of DELTA 3 Max Plus (2048Wh) or DELTA 3 Ultra Plus (3072Wh) with an extra 2048Wh.
Up to 3x the runtime
2-4kWh expandable capacity to fit your energy storage needs. Add up to two DELTA 3 Max Plus (2048Wh) Smart Extra Batteries to gain a capacity of 6144Wh for DELTA 3 Max Plus (2048Wh) and 7168Wh for DELTA 3 Ultra Plus (3072Wh),* giving you extended runtime for home backup, RVing, outdoor adventures, and everyday use.
* Requires the EcoFlow Smart Extra Battery Expansion Adapter to connect two Smart Extra Batteries to the DELTA 3 Max Plus (2048Wh) or DELTA 3 Ultra Plus (3072Wh). The adapter is scheduled for US local release by approximately January 2026.
Compact size
The extra battery’s overall volume is reduced by approximately 25% compared to the DELTA 2 Max Smart Extra Battery.
Automotive-grade Full-Tab LFP Cells: Next-Level Battery Reliability
DELTA 3 Max Plus (2048Wh) Smart Extra Battery is equipped with automotive-grade full-tab LFP cells. The full-tab design reduces resistance, enhances efficiency and safety, and provides higher capacity with less heat, resulting in a long battery lifespan.
Easy to use
There's no setup. Just plug it into your power station for more energy storage. You can monitor the charge level, working status and temperature via the EcoFlow App with ease.
Specs
Net Weight
16kg±0.4kg
Dimensions (HWD)
494*239*196mm
Rated Capacity
2048Wh 51.2V 40Ah
Cell Chemistry
LFP(LiFePO4)
Output Port
43.2~57.6V, 100A
Input Port
43.2~57.6V, 48A
Charge Temperature
0°C-45°C(32°F-113°F)
Discharge Temperature
-10 to 45°C(14°F-113°F)
Storage Temperature
-10 to 45°C(14°F-113°F)
Warranty
5-Year Warranty**Includes 3-year standard warranty and 2-year extended warranty available upon EcoFlow App registration.
Frequently Asked Questions
3-year basic warranty + 2-year extended warranty upon app registration
Five-year basic warranty
The Delta 3 Max Plus Power Pack is compatible with the following hosts and ecosystem products. Select the required capacity for purchase:
Hosts:
Delta 3 & Delta 3 Plus (requires subsequent firmware release for compatibility)
Delta 3 Max Plus
Delta 3 Ultra Plus
Ecosystem Products:
WAVE 2/3 (requires future firmware release for compatibility)
Smart Generator 4000 (Dual Fuel) (requires future firmware release for compatibility)
800W Alternator Charger (requires future firmware release for compatibility)
TIPS: Relevant firmware is anticipated for release after January next year.
DELTA 3 Max Plus (2048Wh) has one Extra Battery Port. You can connect a maximum of two extra batteries via EcoFlow Smart Extra Battery Expansion Adapter.
No, the Delta 3 Max Plus EB features only one Extra Battery Port and can only be used when connected to the main unit.
