In other words, does a 1000-watt inverter, draw the same as a 500-watt inverter if they are charging only a laptop? The laptop will draw the same amount and the inverter capacity is really just that, capacity?
i.e. 1000-watt inverter CAN draw UP TO 1000-watts, and the same for 500-watt inverter.
My issue is that I plug in a 1000-watt inverter to a battery, and voltage is dropping to 12.2v. I was informed that I should keep my battery voltage, above 12.4v to keep it healthy and I worry that 12.2v constant (during full solar input) and 11.8v (at night when there is no sun) is killing my battery.
I am currently using a 1000-watt inverter, and now I'm wondering if it is overkill and need to downgrade to a 500-watt inverter to charge a laptop/run cable modem/router (~100-watts/per hour).