EcoFlow DELTA Max Portable Power Station
Expandable home backup power with rapid charging and flexible solar input. Ideal for emergency backup, off-grid work, camping and events.
UK adaptors are supplied at no extra charge with this product.
Key features
- Expandable capacity: 2016 Wh built-in, expandable to 4032–6048 Wh with up to two Smart Extra Batteries (sold separately).
- Rapid charging: Charge from 0–80% in ~1 hour via AC.
- Dual charging options: Combine inputs (e.g., AC + Smart Generator, AC + solar, or Smart Generator + solar) for faster turnaround.
- High output AC power: 4 AC outlets delivering up to 2400 W total (4600 W surge) for appliances and tools.
- Portable solar generator: Supports up to 800 W solar (11–100 V, 10 A) — connect up to 2× EcoFlow 400 W panels or compatible MC4 panels.
- App control: Monitor and manage settings remotely over Wi-Fi with the EcoFlow app.
- Emergency-ready: Seamless integration with the EcoFlow Smart Generator for extended outages.
Expandable home backup power
One DELTA Max gives you 2 kWh of energy. Add up to two Smart Extra Batteries to reach 6 kWh, so essentials like a fridge, lights, Wi-Fi router and small appliances can run for hours during a blackout.
Convenient, fast dual charging
From the mains, DELTA Max charges safely from 0–80% in about an hour. Need it quicker? Combine inputs — AC with the EcoFlow Smart Generator, AC with solar, or Smart Generator with solar — for faster top-ups when time matters.
Portable solar generator
Pair with EcoFlow solar panels (up to 800 W total) or compatible MC4 panels. The built-in MPPT optimises charging even in variable weather, keeping you powered off-grid.
Emergency backup with Smart Generator
During extended outages, the EcoFlow Smart Generator can automatically start to recharge your DELTA Max at a preset level and stop when full — a fuel-efficient safety net.
Control from the EcoFlow app
Check input/output, remaining time, and adjust charging parameters from your phone over Wi-Fi. Ideal for managing energy use at home or on the move.
What’s in the box
- DELTA Max
- AC charging cable
- Car charging cable
- Solar charging cable (MC4)
- DC5521 to DC5525 cable
- User manual
Plus: UK adaptors included free of charge.
Technical specifications
| Capacity | 2016 Wh |
| Expandable capacity | Supports up to two DELTA Max Smart Extra Batteries (up to 6048 Wh total) / compatible with EcoFlow Smart Generator |
| AC output | 4 outlets, 2400 W total |
| USB-A (standard) | 2× 5 V / 2.4 A (12 W max per port) |
| USB-A (fast charge) | 2× 5 V 2.4 A / 9 V 2 A / 12 V 1.5 A (18 W max per port) |
| USB-C | 2× 5/9/12/15/20 V, up to 5 A (100 W max per port) |
| Car socket output | 12.6 V, 10 A (126 W max) |
| DC5521 outputs | 2× 12.6 V, 3 A (38 W max per port) |
| AC charging input | Up to 2000 W, 10 A |
| Solar charging input | Up to 800 W, 11–100 V, 10 A (MC4) |
| Car charging input | 12 V / 24 V, 8 A |
| Battery chemistry | NCM |
| Cycle life | Approx. 800 cycles to 80% capacity |
| Shelf life | ~1 year after a full charge |
| Connectivity | Wi-Fi (EcoFlow app) |
| Dimensions (L × W × H) | 49.7 × 24.2 × 30.5 cm (19.6 × 9.5 × 12 in) |
| Net weight | ≈ 22 kg (48 lb) |
Ways to charge
- AC wall socket (fastest standalone method)
- Solar panels up to 800 W (11–100 V, 10 A)
- 12/24 V vehicle socket (car charging)