Can someone tell me how to read this correctly

bshpilot wrote:
go get one of these - it will give you a better state of charge !

$13.95 INNOVA Plug-in 12vdc Voltmeter

Then print this chart out and keep it in the RV, this will give you a much better indication of what kind of shape your battery is in:

rainy029 wrote:
We have never taken along a battery before.

How does your refrigerator work on the road sans battery?

go get one of these - it will give you a better state of charge !

$13.95 INNOVA Plug-in 12vdc Voltmeter

rainy029 wrote:
We are taking a trip for 10 days. We have never taken along a battery before.

Are you saying that you have never had a battery in place while traveling with your camper? A battery is a MUST inorder for the the brake-away switch to engage your brakes in an emergency. I suggest that you never leave home without a fully charged batter in place for your safety and mine.

PS. Get a voltmeter and ignore those lights on the panel. They are probably just an approximation anyway.

Charging
Good
Fair
Low

You would be a lot further ahead using a digital voltage meter rather than those idiot light.

I would get a mulimeter if you don't already have one and check the battery once it is fully charged, 12.6 volts or higher, then see which light corresponds to a fully charged battery. Having said that I would trust the multimeter reading over the light readings which may or may not be accurate. In ten days you will have to recharge your battery somehow if you are dry camping. Do you have just 1 12v battery or 2 6 v batteries connected to make a 12 v?

Just a guess: Good, Fair, Low. These lights are just a sort of voltmeter and don't give a very reliable indication of the battery's stare of charge. A real DC voltmeter is a much better indicator.