EcoFlow DELTA 3 Plus
The all‑rounder: 1 kWh of LiFePO4, six AC outlets and the only model here you can grow to 5 kWh with extra batteries.
- Continuous AC output
- 1,800W
- AC recharge time
- 56min
- Max solar input
- 500W
- Weight
- 27.6lb
We earn a commission when you buy through our Amazon links, at no extra cost to you.
The DELTA 3 Plus is EcoFlow’s mid‑size workhorse. It stores 1,024 Wh in lithium iron phosphate cells rated for 4,000 cycles, delivers 1,800 W continuously and can push a single resistive appliance to about 2,200 W with X‑Boost, which lowers voltage so a kettle or hair dryer runs at reduced power instead of tripping the unit.
Where it pulls ahead is flexibility. It has 13 outputs, including six AC outlets, a sub‑10 ms UPS switchover tested at around 8 ms, and it accepts EcoFlow’s extra battery packs to reach up to 5 kWh. That makes it a station you can buy for camping today and grow into a real home‑backup system later.
Pros
- Expandable to 5 kWh with extra batteries
- Full recharge from the wall in about 56 minutes
- 13 outputs, six of them AC
- Fast UPS switchover (measured ~8 ms)
Cons
- Heaviest of the group at 27.6 lb
- Solar input tops out at 500 W
- Extra batteries add significant cost
Who it’s for
- Homeowners who want to start small and expand later
- Running several devices at once during an outage
- Desk setups that need a silent UPS
Technical specifications
| Capacity | 1,024 Wh |
|---|---|
| Battery chemistry | LiFePO4 |
| Cycle life (to 80%) | 4,000 |
| Continuous AC output | 1,800 W |
| Surge power | 3,600 W |
| AC recharge time | 56 min0–100% at 1,500 W |
| Max solar input | 500 W |
| Weight | 27.6 lb (12.5 kg) |
| Total outputs | 13 |
| UPS switchover | ≤ 10 ms |
| Expandable | Yes, up to 5,000 Wh |
| App control | Wi‑Fi + Bluetooth |
| Noise | ~30 dBat 600 W |
| Dimensions | 15.7 × 8.0 × 11.2 in |
Performance profile
Scores are calculated from the published specs on a 0–10 scale, so every model is measured the same way.
How long will it run?
- Wi‑Fi router + modem 20 W44 h+
- CPAP machine 40 W22 h
- Fridge (average draw) 60 W15 h
- Laptop 60 W15 h
- 55" TV 100 W8.7 h
- Drip coffee maker 1,000 W0.9 h
- Space heater 1,500 W0.6 h
Estimated with 85% inverter efficiency. Real runtimes vary with temperature and load.
What reviewers and owners say
Lab reviewers praise the cleaner port layout, quick wall charging and low noise, with fans staying under 30 dB at moderate loads. StorageReview measured the UPS handover at just over 8 ms. The recurring caveat is weight: at 27.6 lb it is a carry‑to‑the‑car unit, not a hike‑in one.
Most praised
- Charging speed
- Quiet fans
- App with storm alerts
Most common complaints
- Weight
- Cost of expansion
Sources: StorageReview
EcoFlow DELTA 3 Plus
The all‑rounder: 1 kWh of LiFePO4, six AC outlets and the only model here you can grow to 5 kWh with extra batteries.