Capacity
Higher is better | Scale max: 768 Wh | AC70 leads
AC70 768 Wh
RIVER 2 Max 512 Wh
AC70: +256 Wh (+50.0%).
AC70 vs RIVER 2 Max
1,000W
Running power
500W
768 Wh
Battery
512 Wh
22.5 lbs
Weight
13.4 lbs
At a Glance
This comparison targets portable-power buyers weighing raw capability against carry weight. The Bluetti AC70 delivers 1000W of running power and 2000W surge from a 768 Wh LFP battery, while the EcoFlow RIVER 2 Max tops out at 500W running and 1000W surge with 512 Wh of capacity.
That gap in output translates directly to device coverage: the AC70 powered 24 out of 53 tested devices versus 20 for the RIVER 2 Max. Solar recharge favors the AC70 as well, accepting up to 500W of panel input and reaching a full charge in roughly 2.7 hours compared to 220W max input and 3.3 hours on the RIVER 2 Max.
Both units share LFP chemistry rated for 3,000 cycles, so longevity is a wash. The tradeoff is weight: the AC70 tips the scales at 22.5 lbs, nearly 9 lbs heavier than the 13.4 lb RIVER 2 Max.
Overall Winner
AC70
Powers 24 of 53 tested devices vs 20 for RIVER 2 Max
Home backup: AC70 RV / mobile: RIVER 2 Max Solar: AC70
AC70 wins overall, but the best pick depends on your use case.
Choose AC70 if...
- + You want faster solar recharging
- + You want broader device compatibility
- + You need all-day runtime headroom
Choose RIVER 2 Max if...
- + Portability matters (13 lbs vs 23)
Spec Snapshot
Absolute values shown. Bars are scaled within this comparison for readability.
Each metric is independent. Bar lengths are not comparable across different compare pages.
Running Power
Higher is better | Scale max: 1,000 W | AC70 leads
AC70 1,000 W
RIVER 2 Max 500 W
AC70: +500 W (+100.0%).
Surge Power
Higher is better | Scale max: 2,000 W | AC70 leads
AC70 2,000 W
RIVER 2 Max 1,000 W
AC70: +1,000 W (+100.0%).
Weight
Lower is better | Scale best: 13.4 lbs | RIVER 2 Max leads
AC70 22.5 lbs (10.2 kg)
RIVER 2 Max 13.4 lbs (6.1 kg)
RIVER 2 Max: -9.0 lbs (40.2% lighter).
Battery Life
Higher is better | Scale max: 3,000 cycles | Tie
AC70 3,000 cycles
RIVER 2 Max 3,000 cycles
Delta: Tie (0%).
Where Compatibility Actually Differs
Out of 53 devices tested, 4 show a different result between these two stations.
Both can run: 20 · Differences: 8% (4/53) · Neither can run: 29
Neither can run · 29 devices
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)
Full Specs Comparison
| Spec | AC70 | RIVER 2 Max |
|---|---|---|
| Capacity | 768 Wh ✓ | 512 Wh |
| Running Power | 1,000 W ✓ | 500 W |
| Surge Power | 2,000 W ✓ | 1,000 W |
| Weight | 22.5 lbs (10.2 kg) | 13.4 lbs (6.1 kg) ✓ |
| Energy Density | 75.3 Wh/kg | 83.9 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 |
Solar Charging
Best-case charging profile using compatible solar panels.
AC70
Faster Max solar input 500 W
Connector XT60
Full charge time ~2.7h
Compatible panels 19/20
MPPT: 12-58V
RIVER 2 Max
Max solar input 220 W
Connector XT60i
Full charge time ~3.3h
Compatible panels 17/20
MPPT: 11-50V
Charge speed comparison
Longer bar = faster charge (inverted scale)
Device Compatibility
All tested devices grouped by category. Click a category to expand.
AC70RIVER 2 Max
Emergency(2)
1/21/2
1/2
1/2
Entertainment(2)
2/21/2
2/2
1/2
EV & Transportation(2)
1/21/2
1/2
1/2
Heating & Cooling(7)
1/71/7
1/7
1/7
| Device | AC70 | Runtime | RIVER 2 Max | Runtime |
|---|---|---|---|---|
| Box Fan (20-inch) | Safe | 6.5h | Safe | 4.3h |
| 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 |
Home Infrastructure(3)
1/31/3
1/3
1/3
| Device | AC70 | Runtime | RIVER 2 Max | Runtime |
|---|---|---|---|---|
| Electric Water Heater (50 Gal) | Voltage Fail | N/A | Voltage Fail | N/A |
| Garage Door Opener (Residential) | Safe | 3h | Safe | 2h |
| Well Pump (1 HP) | Voltage Fail | N/A | Voltage Fail | N/A |
Kitchen Appliances(11)
2/111/11
2/11
1/11
| Device | AC70 | Runtime | RIVER 2 Max | 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 | Safe | 1.2h |
| Toaster Oven | Fail | N/A | Fail | N/A |
Large Appliances(4)
1/41/4
1/4
1/4
| Device | AC70 | Runtime | RIVER 2 Max | 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 | 1.7h |
| Washing Machine | Fail | N/A | Fail | N/A |
Medical(4)
4/44/4
4/4
4/4
Outdoor & RV(6)
5/64/6
5/6
4/6
Personal Care(2)
1/21/2
1/2
1/2
Power Tools(5)
0/50/5
0/5
0/5
As an Amazon Associate, we earn from qualifying purchases. Our methodology
The Bottom Line
Buyers who need to run higher-draw appliances during outages or at a campsite should choose the AC70; its 1000W output and 768 Wh capacity handle loads the RIVER 2 Max simply cannot. Hikers, cyclists, or anyone prioritizing a lighter pack will appreciate the RIVER 2 Max, which covers 20 of the same 53 devices at just 13.4 lbs. Overall, the AC70 earns the win with a higher compatibility score of 46.5 versus 40 and meaningfully greater power headroom.
AC70 vs RIVER 2 Max FAQ
Q Which is better for home backup, AC70 or RIVER 2 Max?
AC70 is the stronger overall choice in this matchup based on weighted compatibility across 53 tested devices.
Q Which has longer runtime, AC70 or RIVER 2 Max?
AC70 has higher battery capacity (768 Wh), which generally supports longer runtime on the same load.
Q Which charges faster with solar panels?
AC70 has the faster best-case solar recharge profile in our panel compatibility test set.
Q Which is more portable, AC70 or RIVER 2 Max?
RIVER 2 Max is lighter at 13.4 lbs vs 22.5 lbs. RIVER 2 Max is rated ultralight for portability.
Q How many devices can each power station run?
AC70 powers 24 of 53 tested devices, compared to 20 for RIVER 2 Max.