Home Power Facts EcoFlow
DELTA 3 Classic
The EcoFlow DELTA 3 Classic has 1,024 Wh rated capacity (about 819 Wh usable, estimated) and a 1,800 W inverter. It can run all 16 of the 120 V household loads we track.
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- Rated
- 1,024 Wh
- Usable (est.)
- 819 Wh
- AC output
- 1,800 W
- Surge
- 3,600 W
Specs
| Rated capacity | 1,024 Wh[source]1024Wh 51.2V 20Ah. Not the same product as the DELTA 3 / DELTA 3 Plus / DELTA 3 Max. |
|---|---|
| Usable capacity (AC) | Not publishedno independent test found. thesolarlab.com reports about 83% inverter efficiency but does not publish a measured Wh figure. (estimate: 819 Wh at 80%) |
| Battery chemistry | LiFePO4[source]'LFP(LiFePO4)'. |
| AC continuous output | 1,800 W[source]'120V~60Hz 1800W total'. |
| AC surge output | 3,600 W[source]'3600W surge output'. X-Boost (resistive loads up to 2600 W) is a separate feature. Some retailer listings give X-Boost as 2400 W; the official page says 2600 W. |
| AC outlets | Not publishedOfficial US spec table does not list the number of AC outlets. |
| UPS / EPS switchover | 10 ms[source] |
| Expandable | Not publishedOfficial page does not state expandability. An independent review (thesolarlab.com) lists it as non-expandable. |
| Max expanded capacity | Not publishedNo expansion capacity stated on the official page. |
| AC charging | 1,400 W[source]'AC Input (Charge Only) 100-120V~15A 50/60Hz 1400W Max'. |
| Max solar input | 500 W[source] |
| Cycle life | Not publishedOfficial page gives no cycle count, only an estimated ~10-year lifespan from internal simulation. Retailer cycle figures (3000 or 4000) conflict and were not used. |
| Weight | 26.7 lb[source]Official net weight '12.1kg+0.3kg', converted to lb (12.1 kg = 26.7 lb). |
| Warranty | 5 years[source]3-year standard + 2-year extension only after EcoFlow app registration. |
| Idle draw | 17 W[source]The Solar Lab measured idle draw of 'roughly 17W' with the inverter on. |
| List price | $599[source]Regular price $599; sale price $499 (pre-order) shown on 2026-10-18. |
Verified 2026-10-18. Notes under a value explain conflicting sources.
What it can run
| Appliance | Runs it? | Runtime |
|---|---|---|
| Refrigerator | Yes | 9.8 h |
| Chest freezer | Yes | 19.7 h |
| CPAP (no humidifier) | Yes | 13.2 h |
| CPAP with heated humidifier | Yes | 7.7 h |
| Sump pump (1/3 hp) | Yes | 1.2 h |
| Sump pump (1/2 hp) | Yes | 0.9 h |
| Gas furnace blower (1/2 hp) | Yes | 1.4 h |
| Window AC (5,000 BTU) | Yes | 2.3 h |
| Microwave | Yes | 0.9 h |
| Coffee maker | Yes | 0.7 h |
| Laptop charger | Yes | 10.6 h |
| Phone charger | Yes | 22.1 h |
| Wi-Fi router / modem | Yes | 25.6 h |
| TV (LED, 32-55 inch) | Yes | 9.6 h |
| LED light bulb (each) | Yes | 31.5 h |
| Space heater | Yes | 0.5 h |