EcoFlow buyer’s guide · DELTA 3
EcoFlow DELTA 3 (1500): specs, runtime and who it’s for
1,536 Wh of storage and 1,800 W of continuous output , with LFP battery chemistry. Here’s what that means for brownouts in a Philippine home.
Spec-based guide — we haven’t tested this unit. Specs from EcoFlow, checked October 27, 2026.
EcoFlow DELTA 3 (1500)
Prices and stock change often — check the current price on EcoFlow’s Philippine store.
Who it suits
Good for
- Overnight brownouts for a fan, Wi-Fi and lights
- Keeping a refrigerator running for some hours (check your fridge’s start-up surge)
- Short bursts of higher-power appliances such as a rice cooker or a small inverter aircon
- Growing your backup later — expandable to 5,500 Wh
- Recharging from solar panels (up to 500 W of input)
Less suited to
- Carrying often — it weighs 16 kg
Based on the published specs and the example appliance wattages below. Check your own appliances’ labels.
Specifications
| Battery capacity | 1,536 Wh |
|---|---|
| Battery chemistry | LFP |
| Rated cycle life | 3000 cycles to 70%+ capacity |
| Continuous AC output | 1,800 W |
| Surge AC output | 3,600 W |
| X-Boost | 2,400 W |
| AC outlets | 4 |
| USB-C maximum | 100 W |
| Solar input | 500 W (11-60V) |
| AC charging | 1500W AC input, about 1.5 h |
| Expandable to | 5,500 Wh — 'supporting D2M/D2/DP3/D3 Extra Battery (up to 5.5kWh)' |
| UPS / EPS switchover | 15 ms |
| Weight | 16 kg |
| Dimensions | 400 x 212 x 282 mm |
Source: EcoFlow official specifications, checked October 27, 2026. Specs can change — confirm on EcoFlow’s page before buying.
Estimated brownout runtimes
Runtime ≈ 1,536 Wh × 0.85 ÷ load (W). The 0.85 factor allows for usable capacity and AC conversion losses, in line with the factor EcoFlow and other makers use. Real runtime varies.
| Scenario (example wattages) | Load | Estimated runtime |
|---|---|---|
| Essentials: fan, Wi-Fi router, three LED bulbs | 97 W | 13 h 28 min |
| Essentials + phone charging + laptop | 187 W | 6 h 59 min |
| Essentials + refrigerator (compressor ~⅓ of the time) | 130 W | 10 h 1 min |
What it can run on its own
Each appliance by itself, using example wattages. Motor appliances are checked against the surge rating at about 3× their running watts.
| Appliance | Example load | Can it run it? | Runtime alone |
|---|---|---|---|
| Electric fan | 60 W | Yes | 21 h 46 min |
| LED bulb × 3 | 27 W | Yes | 48 h 21 min |
| Wi-Fi router | 10 W | Yes | 5.4 days |
| Phone charging × 2 | 30 W | Yes | 43 h 31 min |
| Laptop | 60 W | Yes | 21 h 46 min |
| LED TV | 80 W | Yes | 16 h 19 min |
| Refrigerator | 100 W | Yes | 13 h 3 min |
| Chest freezer | 100 W | Yes | 13 h 3 min |
| Desktop computer + monitor | 150 W | Yes | 8 h 42 min |
| Rice cooker (cooking) | 700 W | Yes | 1 h 52 min |
| Water pump | 370 W | Yes | 3 h 32 min |
| Aircon (inverter, small room) | 900 W | Yes | 1 h 27 min |
Fridges, freezers and aircons cycle on and off, so they usually last longer than the “runtime alone” figure suggests.
Recharging with solar
It accepts up to 500 W of solar input (11-60V). With about 4.7 peak sun hours a day (the Philippine average) and allowing about 20% for losses, a full recharge from empty takes roughly:
- 2 sunny days with a 200 W panel
- 0.8 sunny days with 500 W of panels (its maximum input)
Estimate: capacity ÷ (panel watts ÷ 1.2 × peak sun hours). Cloudy weather, shading and panel angle reduce charging.
Compared with the nearest models
Looking for a discount? See how to get EcoFlow vouchers and promo codes in the Philippines.
Notes: The PH variant is labelled 'DELTA 3 (1500) EU', so check the plug and socket type before recommending it. Conflict: the spec table says '70%+ capacity after 3000 cycles', and one feature block says '4000 cycles to 70%'. The spec table value is used. Weight and dimensions are listed as approximate. Marked 'Sold out' with a pre-order note on 2026-10-27. This model does not appear on www.ecoflow.com/ph.