Two LiFePO4 stations near the same shelf price. EcoFlow gives you more battery and a bigger inverter. Jackery is the sealed, rugged one with more solar input.
EcoFlow DELTA 3 Max
- Capacity2048 Wh
- AC output2400 W
- Weight44.8 lb
- Cyclesn/a
Jackery Explorer 1500 Ultra
- Capacity1536 Wh
- AC output1800 W
- Weight38.6 lb
- Cycles4,000
Main differences
Full manufacturer wording
| Spec | EcoFlow DELTA 3 Max | Jackery Explorer 1500 Ultra |
|---|---|---|
| Capacity | 2,048 Wh | 1,536 Wh |
| AC output | 2,400 W AC (4× 120 V 20 A), 4,800 W surge; X-Boost up to 3,400 W | 1,800 W AC (3× 120 V), 3,600 W surge peak |
| Weight | About 44.8 lb (20.3 kg) | About 38.6 lb (17.5 kg) |
| Chemistry | LFP (LiFePO4) | LiFePO4 |
| Cycle life (mfr.) | n/a | 4,000 cycles to 70%+ |
| Max solar input | 500 W max | 800 W max (2× 16–60 V, 12 A) |
| Expandable | No expansion listed on the US product page | No expansion listed on the US product page |
| Charge temp. | 32–113°F (0–45°C) | 32–113°F (0–45°C) |
| Discharge temp. | 14–113°F (−10–45°C) | 5–113°F (−15–45°C); output 1,000 W at 5–14°F |
| Warranty (mfr. copy) | 5 years (3 standard + 2 with app registration) | 3+2 years |
Capacity and price
DELTA 3 Max stores 2048 Wh; Explorer 1500 Ultra stores 1536 Wh. On the brand stores on our check date, DELTA 3 Max listed at $879 and Explorer 1500 Ultra at $1,079, roughly 43¢ versus 70¢ per Wh. Prices move often, so check both before you buy.
Output
DELTA 3 Max rates 2400 W across four 20 A outlets, with a 4800 W surge and X-Boost up to 3400 W for resistive loads. Explorer 1500 Ultra rates 1800 W across three outlets with a 3600 W surge peak. Both list a 100 W USB-C port plus a 30 W USB-C, a USB-A and a 12 V car outlet; EcoFlow lists a <10 ms UPS switchover.
Charging and solar
Wall charging: DELTA 3 Max takes up to 1800 W (0–80% in 68 min). Explorer 1500 Ultra lists a full AC charge in about 1.5 h. Solar is where Jackery pulls ahead: 800 W across two inputs versus 500 W on DELTA 3 Max. Neither US page lists add-on battery packs for these models.
Weight, weather and warranty
DELTA 3 Max: about 44.8 lb (20.3 kg), 19.4 × 9.4 × 12.0 in. Explorer 1500 Ultra: about 38.6 lb (17.5 kg), 13.2 × 10.4 × 11.6 in, rated IP65 dust and water resistant. Explorer 1500 Ultra discharges down to 5°F (capped at 1000 W below 14°F); DELTA 3 Max down to 14°F. Both charge from 32°F to 113°F. Both list 5 years of warranty in total (EcoFlow’s last 2 years need app registration; Jackery lists 3+2). EcoFlow does not publish a cycle count on the US page.
EcoFlow DELTA 3 Max — official storeAmazon search
Jackery Explorer 1500 Ultra — official storeAmazon search
Sources
EcoFlow US DELTA 3 Max product page specs and user manual. Jackery US Explorer 1500 Ultra product page tech specs. Checked 4 November 2026.