BatteryRank scores the Bluetti AC70 higher overall — 71 vs 63, though the other unit leads on charging.
- Best for Home backup: Bluetti AC70
- Best for Camping & RV: Bluetti AC70
How they score
Computed from sourced data with a published, price-independent formula. Scores are relative to each model's size class.
Capacity truth
The watt-hours on the box aren't what reaches your devices. Same scale, both units.
The marketing number — total cell capacity.
~580 Wh extracted at 1200W over 29 min (Trusted Reviews) · 24% below the label
The marketing number — total cell capacity.
What reaches an AC outlet — about 15% is lost turning battery power into household AC. How we estimate.
Key specs, side by side
| Spec | Anker SOLIX C800 X | Bluetti AC70 |
|---|---|---|
| Usable capacity | 768 Wh | 768 Wh |
| Continuous power output | 1,200 W | 1,000 W |
| Surge power output | 1,600 W | 2,000 W |
| Max solar input | 300 W | 500 W |
| AC charge time (0–100%) | 58 min | 75 min |
| Weight | 10.9 kg | 10.2 kg |
| Rated cycle life | 3,000 cycles | 3,000 cycles |
Manufacturer-claimed unless marked verified (FCC/UL/DOE/lab). Hover any figure for its source.
Price & fair-price verdict
Each verdict compares today's price against that model's own tracked history — never MSRP theater.
Where these rank
- Bluetti AC70 #1 Small / carry in Best Portable Power Stations