do is connect matching terminals. You may also like: Top 5 Awesome Bug Out Vehicles You Can Actually Afford.
Look for a UL rating. There are plenty of ways to provide yourself with a reliable source of post-disaster electricity. If you do that, the output is the total of all the batteries; two batteries gives 24 volts, three gives 36V.
No matter how many car batteries you connect in parallel, the output will always be 12 volts, and the invertor can handle that. The first is a power invertor. Secondly, the total current from the system is equal to the total current of each battery. Hooking it up, connecting it all up is usually very simple. Car batteries put out 12-volt DC current, which is no use. Identify the positive and negative terminals of your battery by the markings embossed on beside the terminals. Next, be careful not to overload. An invertor converts the batterys steady output to AC, and also steps it up to 110-volt.
Car battery hookup order