How long will the Bluetti Apex 300 run a 12v cooler / fridge?

Q: Will the Bluetti Apex 300 run a 12v cooler / fridge?

Yes — the Apex 300 runs a 12v cooler / fridge comfortably. Its 3840W continuous output easily covers the 45W draw, with 7680W of surge on tap for startup.

Q: How long will the Bluetti Apex 300 run a 12v cooler / fridge?

The Bluetti Apex 300 has 2764 Wh (about 1997 Wh usable at the outlet, estimated). Running a 12v cooler / fridge that draws 45W, it lasts about 1.9 days (~44 hours) on a single full charge.

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Will the Bluetti Apex 300 run a 12v cooler / fridge?

Yes — the Apex 300 runs a 12v cooler / fridge comfortably

Its 3840W continuous output easily covers the 45W draw, with 7680W of surge on tap for startup.

Estimated runtime

about 1.9 days (~44 hours)

on a single full charge

Est. usable (AC): 1,997 Wh

Appliance draw: 45 W

Continuous output: 3840 W

How we calculated this

We start from the Bluetti Apex 300's 1,997 Wh of estimated usable energy at the outlet — its 2,764 Wh rating, derated for a safe depth of discharge and ~15% inverter loss — then divide by the 12v cooler / fridge's 45W draw:

1,997 Wh ÷ 45 W ≈ 44.4 hours

Heads up: a 12v cooler / fridge is a motor/compressor load that spikes 2–3× on startup. The Bluetti Apex 300's 3840W continuous / 7680W surge output has plenty of headroom for that spike.

Real-world runtime varies with temperature, cable losses, and how hard the appliance actually cycles. Treat this as a solid estimate, not a guarantee.

Check Apex 300 price → Full Apex 300 specs →