Anker SOLIX S2000 vs EcoFlow DELTA 3 Max
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Our verdict
Both hold about 2 kWh, but they’re built for different jobs. The Anker SOLIX S2000 is remarkably compact for its capacity at 35.7 lb (vs 44.8 lb) and is rated for 6,000 cycles, double the DELTA 3 Max’s 3,000.
The EcoFlow DELTA 3 Max has far more muscle: 2,400 W continuous vs 1,500 W, 4,800 W surge vs 3,000 W, and slightly faster solar charging (500 W vs 400 W). That output gap decides it: the S2000 has no headroom for a 1,500 W space heater, kettle or microwave, while the DELTA 3 Max does. Choose the S2000 for long, low-power backup (fridge, internet, CPAP) where weight and lifespan matter; choose the DELTA 3 Max if you need to run high-wattage appliances.
Based on manufacturer specs and list prices checked Oct 11, 2026.
Where the Anker SOLIX S2000 wins
- Lighter (35.7 vs 44.8 lb)
- More rated cycles (6,000 vs 3,000)
- More battery per list-price dollar (2.01 vs 1.71 Wh/$)
Where the EcoFlow DELTA 3 Max wins
- More continuous output (2,400 vs 1,500 W)
- Higher surge for motor start-ups (4,800 vs 3,000 W)
- Faster solar charging (500 vs 400 W input)
Spec by spec
| Spec | Anker SOLIX S2000 | EcoFlow DELTA 3 Max |
|---|---|---|
| Battery capacity | 2,010 Wh | 2,048 Wh (better) |
| Continuous AC output | 1,500 W | 2,400 W (better) |
| Surge / peak output | 3,000 W | 4,800 W (better) |
| Battery chemistry | LiFePO4 | LiFePO4 |
| Rated charge cycles | 6,000 (better) | 3,000 |
| Lifetime energy (capacity × cycles) | 12,060 kWh (better) | 6,144 kWh |
| Weight | 35.7 lb (better) | 44.8 lb |
| Energy per pound | 56.3 Wh/lb (better) | 45.7 Wh/lb |
| AC outlets | 5 | — |
| Max USB-C output | 100 W | — |
| Max solar input | 400 W | 500 W (better) |
| Wall charge to 100% | 138 min | — |
| Expandable to | Not expandable | Not expandable |
| List price at maker | $999.99 | $1,199 |
| Runs a full-size fridge | 32.5 h | 33.2 h |
| CPAP nights (40 W, 8 h) | 5 | 5 |
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