How much current will an inverter draw from the batteries?
This depends on the equipment connected to the inverter. There is a simple method to calculate how much power your inverter is using. For 12V inverters, divide the connected load by 10; for 24V inverters, divide by 20. For example: if you have a 400W load connected to a Mass Sine 12/1200 inverter, consumption will be 400/10 = 40A. For a 24V inverter, say a Mass 24/1500, the corresponding figure is 400/20 = 20A. It is important to remember that this is only an approximation: the real consumption will tend to be some 5 to 15% less (depending on the load type).
