BLUETTI AC50B vs EcoFlow RIVER 3
Technical comparison · Ultraportable
This is a choice between two ultraportable power stations, built for a backpack or a campsite. The difference that matters most is continuous output: 700 W on BLUETTI AC50B against 300 W on EcoFlow RIVER 3, which decides what appliances you can run.
| Parameter | ||
|---|---|---|
| In brief | ||
| Nominal capacity | 0.448 kWh | 0.245 kWh |
| Continuous output | 700 W | 300 W |
| Peak output | 1000 W | 600 W |
| Cell chemistry | LFP (lithium iron phosphate) | LFP (lithium iron phosphate) |
| Cost per kWh | 912.95 €/kWh | 1057.14 €/kWh |
| List price | 409 € | 259 € |
| Weight | 6.7 kg | 3.5 kg |
| Dimensions (W×D×H) | — | 25.5 × 21.2 × 11.3 cm |
| Outlets | ||
| AC outlets | Yes | Yes |
| How long it lasts | ||
| Battery life cycles | 1825 cicli | 730 cicli |
| The limit that runs out first | anni di garanzia | anni di garanzia |
| Rated cycles | 3000 cicli | 3000 cicli |
| Capacity at end of cycle life | 80 % | 80 % |
| Warranty | 5 anni | 2 anni |
| The numbers | ||
| Cost of stored energy | 0.5 €/kWh | 1.448 €/kWh |
| Energy density | 66.9 Wh/kg | 70 Wh/kg |
| Power-to-capacity ratio | 1.56 C | 1.22 C |
| Identity | ||
| Use tier | F1 — Outlet-sized (up to 1 kWh) | F1 — Outlet-sized (up to 1 kWh) |
| Price | ||
| Price | — | ~200–450 € |
| Category specs | ||
| Expandable | Yes | — |
| Fastest USB-C | 65 W | 100 W |
| Maximum charge power | 0.58 kW | 0.305 kW |
| 0–80% charge time | 45 min | — |
| Maximum solar input | 200 W | 110 W |
| Backup power | UPS | UPS |
| Switchover time | 20 ms | 10 ms |
| Mounting | Portable | Portable |
| Minimum temperature | -20 °C | — |
| Maximum temperature | 40 °C | — |
| Noise level | — | 30 dB |
| App required for setup | No | — |
The differences that matter
- Continuous output: 700 W (AC50B) vs 300 W (RIVER 3) → room for heavier appliances
- Maximum solar input: 200 W vs 110 W → faster recharge from a panel on AC50B
- Warranty: 5 years vs 2 years
- Weight: 6.7 kg vs 3.5 kg → RIVER 3 stays easier to carry
Which one to choose
Choose BLUETTI AC50B if…
AC50B suits anyone who needs to power appliances above 300 W continuous, the ceiling of RIVER 3: its 700 W leaves room for heavier loads, and a 200 W maximum solar input shortens recharging away from home. The trade-off is weight, almost double that of RIVER 3.
Choose EcoFlow RIVER 3 if…
RIVER 3 suits anyone who puts bulk first: at 3.5 kg and with compact dimensions (25.5 × 21.2 × 11.3 cm) it fits more easily in a bag or a tent. The trade-off is staying under 300 W continuous and a shorter warranty, 2 years instead of 5.
Where to buy
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