Bluetti AC70: 768 Wh, 1,000 W

The AC70 is Bluetti's mid-size station: 768 Wh of LiFePO4, two 120 V outlets and expansion through B80, B230 or B300 batteries in Power Bank Mode. Bluetti links the AC70P, a sibling with a different capacity, from the same page, and the AC60 is a separate model — check the capacity on a listing.

What 1,000 W continuous and 1,500 W surge cover

The top-freezer refrigerator (360 W running, 1,200 W start), the 7 cu ft chest freezer (600 W, 1,000 W start) and the 5,000 BTU window AC (450 W, 1,200 W start) all fit. The 1/3 HP sump pump does not: its 1,600 W start is above the 1,500 W surge. Kitchen appliances such as the microwave (1,500 W input) and drip coffee maker (1,650 W) are over the continuous rating. Bluetti's Power Lifting Mode is meant for resistive heating loads and is not a continuous rating.

Using the 0.85 factor explained on the methodology page, 768 Wh × 0.85 ÷ 47 W gives about 13.9 hours for the top-freezer refrigerator at its yearly-average draw, or 22.5 hours for the chest freezer at 29 W.

Bluetti rates the battery for 3,000+ cycles to 80 % of original capacity — a stricter end point than the 70 % some makers use (how makers define cycle life).

Inconsistencies on the maker's page

Turbo charging is given as 950 W in the spec table and 850 W in the highlights. The spec table says 1.3–1.6 hours to full, the highlights 45 minutes to 80 %, and the FAQ 1.5 hours. The UPS switch-over is 20 ms. Bluetti showed the AC70 as out of stock when the record was taken.

Add your appliances to the calculator to check your own load against the AC70.