SKYTRONIC 651.620 Mode D'emploi page 6

If you are using a 150W or 300W SkyTronic Inverter, a standard 12v vehicle (50/75A) battery is ideal, as the
inverter only draws a small amount of power. It comes with a vehicle cigarette lighter connection as standard, so
you can use it in your car while you're on the move, or you can attach it directly to the battery, all the necessary
leads are included.
For larger SkyTronic Inverters, we recommend a deep cycle lead/acid battery as the need for recharging is more
important and prolongs the battery's life. This type of battery is commonly found in caravans, motor homes,
Recreational Vehicles and boats.
How much power does the Inverter take from the battery ?
This obviously depends on the load connected to the inverter and the following is a basic calculation only.
Divide the load of the device connected to the SkyTronic Inverter by 10 (12V) or by 20 (24V).
For example: For a 400W appliance connected to a 12V inverter/battery, the power used would be 400 divided by
10 = 40A.