Trying to identify this

Do you have a volt meter? If so, make some voltage measurements at the battery. Before the first start of the day, should be about 12.6 volts. Then immediately after starting the engine, 13.5-15.5 volts. What do you measure?

Idk I cant start it without jumping it unless I take to to autozone to get recharged the battery completely dead

Battery chargers are pretty inexpensive. If you intend to diy’er work on your car, this is an essential tool.

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Oh ok I’ll get one I had no idea I was thinking the cheapest would be somewhere around 150 to 300

So just found out the battery that came with the rv although it’s in good shape it’s a marine battery does that make a difference with alternator charging it?