How it works
Multiply your power bank capacity (Ah × V) by inverter efficiency to get usable energy, then divide by your appliances' total wattage to estimate runtime.
FAQ
Q. Why multiply by inverter efficiency?
A. Converting DC to AC always loses some energy — typically 85–90% efficiency.
Q. What if I run multiple appliances at once?
A. Just add up the wattage of every appliance you'll run and enter the sum in the load field.