Tool

Will your cooler drain the batteries overnight?

Updated October 5, 2026

Enter your cooler's draw and your battery bank. We'll tell you exactly where you land by morning.

Cooler power draw (watts, while compressor runs)Duty cycle % (20-40 once at temp)Hours parkedBattery bank (Ah at 12V)

Rule of thumb: keep overnight draw under 50% of your bank for battery longevity. See the 12V cooler FAQ for the full picture.

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