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Testing new agm batteries
I've unplugged my shore power and will let the coach sit for 12 hours. What should the battery voltage be after this time frame with a couple lights on with healthy batteries and a full charge
Thanks

Re: Testing new agm batteries
Reply #1
You cannot use the vague draw of a couple of lights and get a good answer. You would need an expensive tester. If you completely charge the batteries and unhook them for over 3 days the voltage will tell you somewhat how good they are. My good...

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  • bbeane
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Re: Testing new agm batteries
Reply #2
Mine are usually between 12.80-12.60 after sitting with no load. But to check them you will need to unhook the ground cable so on draw.

Re: Testing new agm batteries
Reply #3
Ok. I'll remember that. Thanks

Re: Testing new agm batteries
Reply #4
I've unplugged my shore power and will let the coach sit for 12 hours. What should the battery voltage be after this time frame with a couple lights on with healthy batteries and a full...


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Re: Testing new agm batteries
Reply #5
I bought 3 of these to test three batteries at the same time.  Two would match your setup.

250W DC 12V Discharge Battery Capacity Tester Module With DC Electronic Load...

You will need 12 volt power supplies that put out 12 volt exactly

Plus...

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