1. Nighthawk

    Chagring a P3A in the car with inverter calculation

    Hi i am going out bush for a few weeks and would like to use my P3A. i am planing on using a 300w sca inverter.(dont think 150 will be enough) My question is: i have a deep cycle battery (second car battery hooked up) and trying to work out how many charges i get out of it before running my...