So i mounted a power inverter today between the seats below the back window. I used a 5000W Cobra Inverter. I run a water pump to fill tank to water stuff. My issue is that I put a full cab on myself so it doesn't have heat. I tried to run a 1500 W (on HIGH) space heater and the inverter does not like it at all. Its not the inverter though, It's warning me that its pulling to much from battery. I run it on the low setting (750W) and no problems. I "thought" the alternator could handle it, but it seems to be draining battery more than alternator is charging it. I don't know much about this stuff. Is my alternator to small? Is my battery to small? I saw there is a dual battery kit now available. I even thought about just fabbing it up so I can actually house a few car batteries. Anybody have any experience with this? Thanks.