Anker 521 PowerHouse vs EcoFlow River 3 Plus
A spec-by-spec breakdown to settle it. Prices and value metric (cost per usable Wh) included.
| Anker 521 PowerHouse |
EcoFlow River 3 Plus |
|
|---|---|---|
| Price | $186 | — |
| Battery capacity | 256 Wh | 286 Wh |
| Usable capacity | 230 Wh | 257 Wh |
| Real usable at outlet (AC) | 196 Wh | 218 Wh |
| AC output (continuous) | 200 W | 600 W |
| Surge output | 400 W | 1200 W |
| Battery chemistry | LiFePO4 | LiFePO4 |
| Rated cycle life | 3000 cycles | 3000 cycles |
| Max solar input | 100 W | 220 W |
| Expandable | No | Yes |
| Weight | 8.2 lb | 9.9 lb |
| Warranty | 5 yrs | 5 yrs |
| Cost per usable Wh | $0.813/Wh | — |
| Check price → | Check price → |
Bottom line
For pure value, the Anker 521 PowerHouse wins on cost per usable Wh. Need the most capacity? The EcoFlow River 3 Plus holds 286 Wh. Prioritizing portability? The Anker 521 PowerHouse is lighter at 8.2 lb. Match the choice to how you scored on the sizing calculator.
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