Refrigerator Problem

That would work. Once they reach temperature, they don't run much.

 

Charge the battery from your trucks cigarette lighter/auxillary plug.....

 

Battery, it dosnt have the price listed. http://www.walmart.com/ip/EverStart-24DC-6-Marine-Battery/16795210

Simple 2amp charger http://www.walmart.com/ip/Stanley-2-amp-Battery-Charger/14560006

And one of these to power the charger http://www.walmart.com/ip/DieHard-71495-750-Watt-Mobile-Power-Inverter-with-Digital-Display/15167307 I own this inverter, I use it for charging the batteries for my power tools, have had it for 3 yrs now and I love it, it reads out the input voltage, wattage used and output voltages. During power outages at home I use it to power my internet router and antenna.

Now with this set up you will be able to recharge about 15-20 amp hours back into the battery, I feel this will be enough to run a refridgerator and a small microwave no problem, if you leave the charger "on" 24hrs a day that will put 30+ ah back into the battery. This isnt a complete solution, but its a feasible solution that can get you around the limits of the lighter socket. You will want to put fuses into the circuits etc. And of course your milage may vary, lol.

 

The majority of inverter fires are caused by hole penetrations that rub the insulation off. The bigger ones have internal circuit breakers. Fuse the feed and protect the hole and you'll never have problems. 123456 charging idea is also good. The only thing I would worry about is ventilation as a battery puts off gases in the charge state.

 

Sorry it took so long to reply.

Ok here it is in a nut shell.

1) Plug small inverter into the lighter socket.
2) Plug small battery charger into the small inverter.
3) connect small charger to the deep cycle battery.
4) Connect the larger inverter to the deep cycle battery.
And as mentioned before, ventilation is important, a charging battery gasses as it charges, hydrogen gas in small amounts, so some ventilation is needed.
The expensive gel cell deep cycle batteries dont gas and last alot longer.
Also I am thinking that a 5amp charger can be used.
If you run this 24 hrs a day you can put over 100 amps back into the deep cycle battery per day.
The idea that the battery charger stores a charge is incorrect, it just provides a constant charge back into the battery to keep it topped up. This setup should last a couple weeks before needing a complete recharge, depending on your power consumption.

 

A healthy truck batteries puts out 12.5V. When you start the truck the alternator jumps it up to 14.0V thus charging the batteries with the over voltage. Your whole 12V electrical system jumps to 14.0 V when running so you can feed from a cigarette lighter to charge that remote battery. He's letting the alternator do the charging from a little detour in wiring.
Brilliant, lol. But you still have a ventilation issue.

 

Not with a sealed deep cycle
Perfect for this purpose
Can be tipped over, does not vent or have any liquid acid
Sometimes called a gel cell.
Not a bad idea. But $150 for a battery, $20 for a charger. Could buy a 12 fridge