4–4 on comparable metrics
BLUETTI AC2A vs EcoFlow RIVER 2
AC2A leads on 4 of the 11 metrics both units publish; RIVER 2 leads on 4; 3 are level or not directly comparable. Capacity is within 19%, so this is a like-for-like decision rather than a size mismatch.
Pick this if
BLUETTI AC2A
- List price: $149 vs $219
- Cost per watt-hour: $0.73 vs $0.90
- Max solar input: 200 W vs 110 W
- UPS switchover: 20 ms vs 30 ms
Buyers who measure value in watts and watt-hours, not in grams and app screens.
Pick this if
EcoFlow RIVER 2
- Capacity: 243 Wh vs 204 Wh
- Weight: 7.7 lb vs 7.9 lb
- Watt-hours per pound: 31.6 Wh/lb vs 25.8 Wh/lb
- AC recharge time: 60 min vs 102 min
Buyers who want one system to grow from camping into home backup.
Spec by spec
A green arrow marks the better figure on each row. Rows where only one unit publishes a number are shown without a winner rather than guessed.
| Metric | AC2A | RIVER 2 | What it means |
|---|---|---|---|
| Capacity | 204 Wh | 243 Wh | How much energy the unit stores. Sets how long everything else can run. |
| Continuous AC output | 300 W | 300 W | The largest load the inverter will run continuously, not counting surge. |
| Weight lower is better | 7.9 lb | 7.7 lb | The spec buyers most often regret ignoring. |
| List price lower is better | $149 | $219 | Vendor list price at the time of collection; street prices move. |
| Cost per watt-hour lower is better | $0.73 | $0.90 | Price divided by capacity. The fairest single value metric. |
| Watt-hours per pound | 25.8 Wh/lb | 31.6 Wh/lb | Capacity you get per pound carried. |
| Max solar input | 200 W | 110 W | Caps how large an array is useful, and therefore off-grid recharge speed. |
| AC recharge time lower is better | 102 min | 60 min | Vendor-stated time to full from a wall outlet. |
| Rated cycles | 3,000 cycles | 3,000 cycles | Vendor claim for charge cycles before capacity degrades to 80%. |
| UPS switchover lower is better | 20 ms | 30 ms | How long the unit takes to switch to battery. Under 20 ms keeps a desktop alive. |
| Warranty | 60 months | 60 months | Stated warranty length from the vendor listing. |
How each one ranks overall
BLUETTI AC2A
- #44 of 73 for Best value (Wh per dollar) ($0.73)
- #71 of 74 for Most portable (Wh per pound) (25.8 Wh/lb)
- #23 of 75 for Most inverter headroom (147 W/100Wh)
- #34 of 36 for Fastest AC recharge (120 W)
- #46 of 55 for Highest solar input (200 W)
- #60 of 65 for Longest service life (612 kWh)
- #37 of 72 for Most output per dollar (2.01 W/$)
- #35 of 75 for Best for home backup (56/100)
- #28 of 75 for Longest warranty (60 mo)
- #21 of 27 for Quietest under load (45 dB)
EcoFlow RIVER 2
- #53 of 73 for Best value (Wh per dollar) ($0.90)
- #59 of 74 for Most portable (Wh per pound) (31.6 Wh/lb)
- #35 of 75 for Most inverter headroom (123 W/100Wh)
- #30 of 36 for Fastest AC recharge (243 W)
- #52 of 55 for Highest solar input (110 W)
- #58 of 65 for Longest service life (729 kWh)
- #53 of 72 for Most output per dollar (1.37 W/$)
- #56 of 75 for Best for home backup (49/100)
- #11 of 75 for Longest warranty (60 mo)
The brands behind them
BLUETTI
The value-and-power buyer who does not mind a heavy box
Best for: Buyers who measure value in watts and watt-hours, not in grams and app screens.
Not for: Buyers who need the lightest possible unit or the simplest possible interface.
Full BLUETTI profile →EcoFlow
The tech-forward buyer who reads the spec sheet and wants room to grow
Best for: Buyers who want one system to grow from camping into home backup.
Not for: Buyers who want the lowest cost per watt-hour and will never use an app.
Full EcoFlow profile →Where these numbers come from. Every figure on this page is taken from BLUETTI’s own product listing and is stored with the vendor’s exact wording, reproduced below. We do not estimate missing specs — a field the vendor does not publish is shown as “—” and excluded from rankings. Source: www.bluettipower.com/products/ac2a.
Vendor wording for each figure (8)
capacityWh: “Capacity => 204Wh”acOutputW: “300W AC Output/ 600W Lifting Power；”weight: “Weight => 7.9 lbs”solarInputW: “Solar Input => 200W Max”rechargeAcMinutes: “250W） 1.7 Hours BLUETTI AC2A”cycleLife: “LiFePO4 3000+ Cycles”upsSwitchoverMs: “Seamless UPS in 20ms；”warrantyMonths: “Industry-leading 5 years warranty；”
Where these numbers come from. Every figure on this page is taken from EcoFlow’s own product listing and is stored with the vendor’s exact wording, reproduced below. We do not estimate missing specs — a field the vendor does not publish is shown as “—” and excluded from rankings. Source: us.ecoflow.com/products/river-2-240-portable-power-station.
Vendor wording for each figure (8)
capacityWh: “Capacity => 243Wh”acOutputW: “AC Output => 120V 50Hz/60Hz, 300W (Surge 600W)”weight: “Net Weight => 7.7lbs”solarInputW: “Solar Input => 11-30V, 8A, 110W Max”rechargeAcMinutes: “0-100% in only 60 min”cycleLife: “80%+ capacity after 3000 cycles”upsSwitchoverMs: “<30ms EPS auto-switch for essential devices.”warrantyMonths: “<td>RIVER 2</td> <td>5 years</td>”
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