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How to choose a inverter and battery?

The time of the battery against the load by the inverter:

Working time = battery capacity × battery voltage × 0.8 × 0.9 / load power
For example, a 12V 60A battery for a 220V 100W bulb:
Working hours = 12 (V) × 60 (AH) × 0.8 × 0.9 / 100 (W) = 5.18 (hours)
  12V - battery voltage; 60 (AH) - battery capacity; 0.8 - battery discharge coefficient (constant); 0.9 - inverter conversion efficiency; 100 (W) - bulb nominal power; 5.18 (hours) - Calculated time for a 100W light bulb to work when powered by a 60AH battery. (Specifically how much time to look at your battery performance is good or bad)


Ice cream machine is an inductive load electrical equipment, its own start-up current, instant power, such as the refrigerator compressor, motor drills and other practical power is generally one-fourth to one-third of the rated power . It is recommended that you use a pure sine wave inverter with a minimum of 3000W.

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