Drawing · 13.4 × 9.7 × 12.5 in · 35.3 lb
- Capacity
- 1,152 Wh
- Output
- 1,800 W (2,700 surge)
- Weight
- 35.3 lb
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BLUETTI AC180 vs BLUETTI AC70
BLUETTI's two compact LiFePO4 units: the AC180 (1,152 Wh) against the smaller AC70 (768 Wh), which takes an extra battery where the AC180 does not. The AC180 is the cheaper energy, 7% less per watt-hour at the makers' prices, holds 384 Wh more and gives 800 W more continuous output. The AC70 is 12.8 lb lighter and takes an extra battery: buy it for that, and the AC180 for the money.
Drawing · 12.4 × 8.2 × 10.1 in · 22.5 lb
$359 at BLUETTI
- Capacity
- 768 Wh
- Output
- 1,000 W (1,500 surge)
- Weight
- 22.5 lb
Capacity
1,152 Wh
768 Wh
AC output
1,800 W
1,000 W
Surge
2,700 W
1,500 W
Solar input
500 W
500 W
Weight
35.3 lb
22.5 lb
BLUETTI
BLUETTI AC180
$499 at BLUETTI
Price unchanged since Oct 7
- Capacity
- 1,152 Wh
- AC output
- 1,800 W
- Surge
- 2,700 W
- Solar input
- 500 W
- Weight
- 35.3 lb
Buy it if you want the most stored energy per dollar ($0.43 against $0.47 per Wh).
BLUETTI
BLUETTI AC70
$359 at BLUETTI
- Capacity
- 768 Wh
- AC output
- 1,000 W
- Surge
- 1,500 W
- Solar input
- 500 W
- Weight
- 22.5 lb
Buy it if the $140 difference matters more than the specs.
Figure by figure
Compare the differences that matter for your devices; BLUETTI AC180 leads on 6, BLUETTI AC70 on 5, and the rest are equal or not comparable.
| Figure | AC180 | AC70 |
|---|---|---|
| Capacity | 1,152 Wh | 768 Wh |
| Output (surge) | 1,800 W (2,700 surge) | 1,000 W (1,500 surge) |
| Weight | 35.3 lb | 22.5 lb |
| Price | $499 at BLUETTI, checked Oct 9, 2026 | $359 at BLUETTI, sold out when checked Oct 11, 2026 |
| Price per Wh | $0.43 | $0.47 |
| Chemistry | LiFePO4 | LiFePO4 |
| Rated cycles | 3,500 to 80% | 3,000 to 80% |
| Max solar input | 500 W | 500 W |
| Max AC input | 1,440 W | 950 W |
| Wall recharge | 1.8 h to full | 1.6 h to full |
| Expandable | no | yes |
| UPS switchover | 20 ms | 20 ms |
| AC outlets | 4 | 2 |
| USB-C ports | 1 | 2 |
| Warranty | 5 years | 5 years |
| Dimensions | 13.39 x 9.72 x 12.48 in | 12.4 x 8.2 x 10.1 in |
Cycle counts are highlighted only when both makers rate them to the same remaining capacity. A full recharge is not ranked against a charge to 80%. Missing figures never count as an advantage. These are manufacturer ratings; matching endpoints do not prove identical test conditions.
Rated cycles: AC180, 3,500 to 80%; AC70, 3,000 to 80%.
How the comparison is worked out
| Figure | AC180 | AC70 | Meaning |
|---|---|---|---|
| Capacity | AC180 spec sheet | AC70 spec sheet | As the maker states it; a dash where not published |
| Output (surge) | AC180 spec sheet | AC70 spec sheet | As the maker states it; a dash where not published |
| Weight | AC180 spec sheet | AC70 spec sheet | As the maker states it; a dash where not published |
| Price | AC180 price source · checked Oct 9, 2026 | AC70 price source · checked Oct 11, 2026 | As the maker states it; a dash where not published |
| Price per Wh | AC180 price source · checked Oct 9, 2026 | AC70 price source · checked Oct 11, 2026 | Price ÷ rated Wh; calculated, not measured |
| Chemistry | AC180 spec sheet | AC70 spec sheet | As the maker states it; a dash where not published |
| Rated cycles | AC180 spec sheet | AC70 spec sheet | Stated cycles and remaining-capacity percentage; conditions may differ |
| Max solar input | AC180 spec sheet | AC70 spec sheet | As the maker states it; a dash where not published |
| Max AC input | AC180 spec sheet | AC70 spec sheet | As the maker states it; a dash where not published |
| Wall recharge | AC180 spec sheet | AC70 spec sheet | Keep the full or 80% charge endpoint |
| Expandable | AC180 spec sheet | AC70 spec sheet | As the maker states it; a dash where not published |
| UPS switchover | AC180 spec sheet | AC70 spec sheet | As the maker states it; a dash where not published |
| AC outlets | AC180 spec sheet | AC70 spec sheet | As the maker states it; a dash where not published |
| USB-C ports | AC180 spec sheet | AC70 spec sheet | As the maker states it; a dash where not published |
| Warranty | AC180 spec sheet | AC70 spec sheet | As the maker states it; a dash where not published |
| Dimensions | AC180 spec sheet | AC70 spec sheet | As the maker states it; a dash where not published |
Estimated AC energy = rated Wh × 0.85. Runtime = estimated AC energy ÷ load W, with no reserve. Capacity and weight differences use the displayed figures; price per Wh uses each model's own price and the day it was checked. The device draws are in the watt-hour calculator.
- Capacity: AC70 minus AC180 = -384 Wh (-33.3% of the AC180 figure).
- Carry weight: AC70 minus AC180 = -12.77 lb (-36.2% of the AC180 figure).
- Price per Wh: AC70 minus AC180 = 0.03 USD/Wh (7.9% of the AC180 figure).
Will it run your gear?
Check whether each unit has enough battery and output for the devices you want to run.
| Use | Needs | AC180 | AC70 |
|---|---|---|---|
| a day of home backup (a full-size refrigerator, a router, phones and lights for a day) | 2,323 Wh, 161 W running, 1,351 W startup | no: too little capacity | no: too little capacity |
| a night of CPAP (a CPAP with its humidifier for one 8-hour night) | 599 Wh, 53 W running, 104 W startup | yes | yes |
| two nights of camping (camp lights, phones, a laptop and a fan for two nights) | 2,066 Wh, 157 W running, 157 W startup | no: too little capacity | no: too little capacity |
| a day in an RV (a day of RV lights, TV, phones and a laptop) | 648 Wh, 156 W running, 156 W startup | yes | yes |
| a working day in a van (a working day of laptop, Starlink, lights and a fan) | 1,674 Wh, 189 W running, 189 W startup | no: too little capacity | no: too little capacity |
| a laptop and two phones (a laptop for six hours and two phone charges) | 396 Wh, 60 W running, 60 W startup | yes | yes |
Runtime by device
Hours = capacity × 0.85 ÷ device watts, with the draws from the device table; "Start" says whether the output and surge ratings cover the startup figure we use for each device (the refrigerator, 1,300 W startup allowance, from a larger 27 cu ft Whirlpool's tech sheet), so a "yes" there means likely, not certain, to start yours.
| Device | Draw W | AC180 h | Start | AC70 h | Start |
|---|---|---|---|---|---|
| CPAP machine (with heated humidifier) | 53 | 18.5 | yes | 12.3 | yes |
| Refrigerator (full-size, ENERGY STAR, ~18 cu ft top freezer) (average draw) | 41 | 23.7 | yes | 15.8 | yes |
| Laptop (MacBook Air, charging) | 40 | 24.5 | yes | 16.3 | yes |
| Wi-Fi router | 24 | 40.8 | yes | 27.2 | yes |
| Starlink Mini (router built in) | 33 | 30.1 | yes | 20.1 | yes |
| TV, 50-inch LED / Crystal UHD | 89 | 11 | yes | 7.3 | yes |
| Space heater, 1500 W | 1,500 | 0.7 | yes | 0.4 | no |
Buy the AC180 if…
- you want the most stored energy per dollar ($0.43 against $0.47 per Wh)
- you need more continuous output (1,800 W continuous and 2,700 W surge, against 1,000 W and 1,500 W)
- you want the higher stated cycle count at the same 80% remaining capacity (3,500 against 3,000); test conditions can still differ
- you want the extra capacity (1,152 Wh against 768 Wh)
Buy the AC70 if…
- the $140 difference matters more than the specs
- you carry it more than you run it (22.5 lb against 35.3 lb)
- you may want to add a battery later
More BLUETTI models. Every model we list: all 116 in one table. Your own devices: the watt-hour calculator.
Questions buyers ask
Which is better for power outages, the AC180 or the AC70?
BLUETTI AC180 states a 20 ms switchover, so it can sit between the wall and a fridge or router and take over when the power cuts, once the device is in an outlet the manual gives the backup to and any AC timeout is off (for a CPAP or a computer, check that device rides through the switch); BLUETTI AC70 states 20 ms. BLUETTI AC180 holds more (1,152 against 768). Check your appliance's startup watts against the surge figures in the table.
Which is cheaper per watt-hour?
AC180 at $0.43 per Wh against $0.47. This compares purchase price with rated capacity, not lifetime delivered energy.
Can either run a window air conditioner?
Only if the air conditioner's running watts stay under the AC output (1,800 W on the AC180, 1,000 W on the AC70) and its start fits the surge figures in the table: read both on the air conditioner's label or in its manual, and test it before you rely on it. For the hours, multiply the rated Wh by 0.85 for inverter losses and divide by the running watts. A unit whose label says 500 W, for example, would run about 2 hours on the AC180 and about 1.3 hours on the AC70 on a full charge, if its compressor ran without a break.