EcoFlow RIVER 2 vs Bluetti AC2A
Side-by-side on the specs that decide it — surge, capacity, runtime and price.
Both models' specs verified against manufacturer listings · Last updated
The short answer
These two cost the same, so the decision comes down to what you're powering.
- EcoFlow RIVER 2 holds 25% more energy (256Wh vs 204Wh), so it runs the same load proportionally longer.
- EcoFlow RIVER 2 is 0.2 lb lighter (7.7 lb vs 7.9 lb).
Neither of these will start a sump pump or well pump — both surge below the ~3,400W those motors need. If home backup with pumps is your use case, look at higher-surge models instead of either of these.
The cheapest way into LiFePO4. 256Wh is a device charger, but at under $200 with a 60-minute recharge it's hard to argue with.
Best for: Budget campers who just need to keep phones, cameras and a laptop alive.
Where it falls short:
- 300W output runs devices only
- 256Wh is a single evening of real use
One of the cheapest LiFePO4 stations on the market. 204Wh is tiny, but a 200W solar input that outpaces the capacity makes it a surprisingly capable little off-grid trickle unit.
Best for: Ultralight campers who recharge from a panel daily.
Where it falls short:
- 204Wh is genuinely small
- 300W output is device-only
| Spec | EcoFlow RIVER 2 | Bluetti AC2A |
|---|---|---|
| Price | $199 | $199 |
| Capacity | 256 Wh | 204 Wh |
| Continuous output | 300 W | 300 W |
| Surge output | 600 W | 600 W |
| Battery | LiFePO4 | LiFePO4 |
| Rated cycles | 3,000 | 3,000 |
| Weight (lighter wins) | 7.7 lb | 7.9 lb |
| Max solar | 110 W | 200 W |
| Recharge time (faster wins) | 1h | 1h 30m |
Runtime head-to-head
| Appliance | EcoFlow RIVER 2 | Bluetti AC2A |
|---|---|---|
| Refrigerator | ❌ | ❌ |
| Mini fridge | 6.9 hrs | 5.5 hrs |
| Chest freezer | ❌ | ❌ |
| CPAP machine | 5.4 hrs | 4.3 hrs |
| Sump pump | ❌ | ❌ |