Capacity
AC70: +523 Wh (+213.5%).
This comparison targets buyers choosing between a mid-capacity portable station and an ultralight compact unit. The Bluetti AC70 delivers 1000W of running power with 768 Wh of capacity, while the EcoFlow RIVER 3 offers 300W and 245 Wh.
That gap matters for device coverage: the AC70 powered 24 out of 53 tested devices compared to 17 for the RIVER 3, and every device the RIVER 3 can handle, the AC70 handles too. Solar recharge speed favors the AC70 as well, with a 500W max input that fills the battery in roughly 2.7 hours versus 3.2 hours on the RIVER 3's 110W input.
Both use LFP cells rated for 3,000 cycles, and neither supports expansion batteries or UPS functionality. The tradeoff is weight: the RIVER 3 comes in at just 7.7 lbs, less than half the AC70's 22.5 lbs, making it far easier to toss in a daypack or carry on a hike.
Overall Winner
AC70
Powers 24 of 53 tested devices vs 17 for RIVER 3
AC70 wins overall, but the best pick depends on your use case.
Absolute values shown. Bars are scaled within this comparison for readability.
Each metric is independent. Bar lengths are not comparable across different compare pages.
AC70: +523 Wh (+213.5%).
AC70: +700 W (+233.3%).
AC70: +1,400 W (+233.3%).
RIVER 3: -14.8 lbs (65.7% lighter).
Delta: Tie (0%).
Out of 53 devices tested, 7 show a different result between these two stations.
Both can run: 17 · Differences: 13% (7/53) · Neither can run: 29
Electric Wheelchair Charger RIVER 3: Running shortfall
Portable Oxygen Concentrator RIVER 3: Running shortfall
Laser Printer RIVER 3: Running + surge shortfall
Laptop RIVER 3: Running shortfall
Desktop PC (Gaming/Workstation) RIVER 3: Running + surge shortfall
Rice Cooker RIVER 3: Running + surge shortfall
Portable Ice Maker (Countertop) RIVER 3: Running + surge shortfall
These devices draw more continuous watts than either station can deliver.
2-Slice Bread Toaster
Coffee Maker
Digital Air Fryer
Electric Skillet
Electric Stove (Single Burner)
Electric Water Kettle
Instant Pot (6 Qt)
Microwave Oven (1000W)
Toaster Oven
RV Rooftop AC (13,500 BTU)
Sump Pump (1/2 HP)
EV Charger (Level 1, 120V)
Central AC (3-Ton)
Gas Furnace Fan (Blower)
Portable AC (12,000 BTU)
Space Heater (1,500W)
Dehumidifier (70 Pint)
Window AC (8,000 BTU)
Electric Water Heater (50 Gal)
Well Pump (1 HP)
Electric Clothes Dryer
Dishwasher
Washing Machine
Professional Hair Dryer
Circular Saw (Corded)
Corded Drill / Hammer Drill
Electric Chainsaw (14-inch)
Pancake Air Compressor (6-Gallon)
Shop Vac (Wet/Dry, 5-6 HP Peak)
| Spec | AC70 | RIVER 3 |
|---|---|---|
| Capacity | 768 Wh ✓ | 245 Wh |
| Running Power | 1,000 W ✓ | 300 W |
| Surge Power | 2,000 W ✓ | 600 W |
| Weight | 22.5 lbs (10.2 kg) | 7.7 lbs (3.5 kg) ✓ |
| Energy Density | 75.3 Wh/kg ✓ | 70.0 Wh/kg |
| Portability Tier | portable | ultralight |
| Chemistry | LFP | LFP |
| Cycle Life | 3,000 | 3,000 |
| Expandable | No | No |
| UPS | No | No |
| AC Voltage | 120V | 120V |
Best-case charging profile using compatible solar panels.
MPPT: 12-58V
MPPT: 11-30V
Charge speed comparison
Longer bar = faster charge (inverted scale)
All tested devices grouped by category. Click a category to expand.
| Device | AC70 | Runtime | RIVER 3 | Runtime |
|---|---|---|---|---|
| Box Fan (20-inch) | Safe | 6.5h | Safe | 2.1h |
| Central AC (3-Ton) | Voltage Fail | N/A | Voltage Fail | N/A |
| Dehumidifier (70 Pint) | Fail | N/A | Fail | N/A |
| Gas Furnace Fan (Blower) | Fail | N/A | Fail | N/A |
| Portable AC (12,000 BTU) | Fail | N/A | Fail | N/A |
| Space Heater (1,500W) | Fail | N/A | Fail | N/A |
| Window AC (8,000 BTU) | Soft Start | 0.8h | Fail | N/A |
| Device | AC70 | Runtime | RIVER 3 | Runtime |
|---|---|---|---|---|
| Electric Water Heater (50 Gal) | Voltage Fail | N/A | Voltage Fail | N/A |
| Garage Door Opener (Residential) | Safe | 3h | Safe | 1h |
| Well Pump (1 HP) | Voltage Fail | N/A | Voltage Fail | N/A |
| Device | AC70 | Runtime | RIVER 3 | Runtime |
|---|---|---|---|---|
| 2-Slice Bread Toaster | Fail | N/A | Fail | N/A |
| Coffee Maker | Fail | N/A | Fail | N/A |
| Digital Air Fryer | Fail | N/A | Fail | N/A |
| Electric Skillet | Fail | N/A | Fail | N/A |
| Electric Stove (Single Burner) | Fail | N/A | Fail | N/A |
| Electric Water Kettle | Fail | N/A | Fail | N/A |
| Instant Pot (6 Qt) | Fail | N/A | Fail | N/A |
| Microwave Oven (1000W) | Fail | N/A | Fail | N/A |
| Rice Cooker | Tight | 0.6h | Fail | N/A |
| Slow Cooker | Safe | 1.8h | Tight | 0.6h |
| Toaster Oven | Fail | N/A | Fail | N/A |
| Device | AC70 | Runtime | RIVER 3 | Runtime |
|---|---|---|---|---|
| Dishwasher | Fail | N/A | Fail | N/A |
| Electric Clothes Dryer | Voltage Fail | N/A | Voltage Fail | N/A |
| French Door Refrigerator | Safe | 2.6h | Safe | 0.8h |
| Washing Machine | Fail | N/A | Fail | N/A |
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Pick the AC70 if you need real home-backup muscle or want to run higher-draw appliances; its 1000W output and 768 Wh capacity cover significantly more gear. The RIVER 3 makes sense for travelers and minimalists who prioritize portability over power and only need to charge phones, laptops, and small electronics. Overall, the AC70 is the stronger buy, earning a 46.5 score versus 33 for the RIVER 3 and covering a wider range of devices.
AC70 is the stronger overall choice in this matchup based on weighted compatibility across 53 tested devices.
AC70 has higher battery capacity (768 Wh), which generally supports longer runtime on the same load.
AC70 has the faster best-case solar recharge profile in our panel compatibility test set.
RIVER 3 is lighter at 7.7 lbs vs 22.5 lbs. RIVER 3 is rated ultralight for portability.
AC70 powers 24 of 53 tested devices, compared to 17 for RIVER 3.