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Question:

charging a marine battery with a car battery through a power inverter?

I am trying to use a marine deep cycle battery and power inverter to power a chest freezer in an ice cream truck. The issue is that the marine battery will drain in a few hours. I was told told that I could connect the inverter to the car battery as well as the marine battery and while the engine is running, the car battery would be charge the marine battery through the inverter. Can anyone tell me how this works and how I should do the wiring?thanks

Answer:

It will work but you need a battery charger as well, hook the inverter to the vehicles battery, then pulg the charger into the inverter, and then have the charger hooked to the marine battery. Why not just get a small generator or a 110v freezer and run it directly off the inverter or generator? You can plumb the generator into the fuel tank of the truck so you don't have to worry about filling the generator. If the truck is diesel get a diesel generator, gas for gas.
Just run heavy gage wire from one battery to the other, pos to pos neg to neg, no big deal, however your alternator ain't gonna like working that hard and will go see Allah in a very short period of time, so a high output alt will be needed sooner rather than later, and with the price of gas and seeing the shape some of those ice cream trucks are in, I see a lot of melted ice cream in your future. maybe a small generator would be more cost effective. almost forgot. if the wattage output of your inverter is not enough to power a freezer,which take quite a bit, you'll smoke the motor out of your freezer in a matter of days if not hours. yea lots of melted ice cream

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