Overview
DELTA 3 Max Plus sits in the middle of EcoFlow’s DELTA 3 range: 2 kWh of LFP storage in a 48.7 lb unit, with a 3000W inverter and one Extra Battery Port for expansion. EcoFlow lists 2-10 kWh of expandable capacity across its system, and the unit switches to battery power in under 10 ms during an outage.
Key points
- 3000W AC output, 6000W surge. X-Boost supports heating-type appliances up to 3800W.
- Up to 1000W solar input plus AC wall charging (100-120V, 15A). EcoFlow quotes 0-80% in about 43 minutes with generator charging.
- 12V outputs: Anderson port (30A max) and car outlet (10A max), which share power.
- Expandable with the DELTA 3 Max Plus Smart Extra Battery (2048Wh each; up to two through EcoFlow’s expansion adapter).
- Warranty: 5 years (3-year standard plus 2 years extended on EcoFlow app registration).
Applications
Home backup for a refrigerator, lights and electronics; RV and camping; mobile work and outdoor events.
Technical specifications
| Model | DELTA 3 Max Plus (EFD3MP-US) |
|---|---|
| Rated capacity | 2048Wh, 51.2V, 40Ah |
| Cell chemistry | LFP (LiFePO4) |
| AC output | 120V~60Hz, 3000W total (6000W surge); 20A x4 |
| X-Boost | 3800W |
| USB-A output | 1 port, 18W max |
| USB-C output | 1 port 140W max; 2 ports 45W max (45W total) |
| 12V DC output | 12.6V, 30A, 378W total (Anderson 30A max, shared with car outlet) |
| Car outlet | 12.6V, 10A, 126W max (shared with Anderson port) |
| AC input (charge) | 100-120V~15A, 50/60Hz |
| Max solar (PV) input | 1000W |
| UPS switchover | <10 ms |
| Connectivity | Wi-Fi and Bluetooth |
| EMC | Class B |
| Charge temperature | 32-113°F (0-45°C) |
| Discharge temperature | 14-113°F (-10-45°C) |
| Net weight | 48.7 lb (22.1 + 0.4 kg) |
| Dimensions (H x W x D) | 19.4 x 9.5 x 12.0 in (494 x 242 x 305 mm) |
| Warranty | 5 years (3-year standard + 2-year extension with app registration) |
Specifications as published by EcoFlow on its official product page. Warranty terms are as stated by EcoFlow.
Buying from CSE Solar USA
Questions about sizing, expansion or delivery timing? Contact CSE Solar USA and our team will help you choose the right setup. See all EcoFlow products at CSE.


