Good converter, bad battery, how do I check?

[Whitehat]

I think I have a bad battery. When it's hooked up, most everything but 12 volt and my AC is dead. When I unhook the battery, everything springs to life. How do I know it's either the converter or the AC?

[JimD]

See the attached docs. There is a section on converter troubleshooting.

[Bill Johnson]

Originally Posted by Whitehat

I think I have a bad battery. When it's hooked up, most everything but 12 volt and my AC is dead. When I unhook the battery, everything springs to life. How do I know it's either the converter or the AC?

Like JimD posted your battery should be fully charged and no draw and should have been at rest for hours before testing. 12.6 or a little higher is what the resting (not sure of the exact terminology) voltage should be, not right after charging it (surface charge). A load test or using a digital battery checker would help also.https://www.amazon.com/KONNWEI-100-2...NsaWNrPXRydWU=

[norty1]

Have your battery tested at an auto store. Could be shorted internally.

[dxrobertson]

Originally Posted by Whitehat

I think I have a bad battery.

I would agree.

If you remove the battery, are plugged into 120V, and everything 12V (lights, fan...) work fine- then the converter appears to be fine. Turn on the AC, it should work fine since the battery doesnt have anything directly to do with the AC.

Follow norty1 advise. A battery can explode if gassing and an arc is created by hooking/unhooking cables.

Other problems could be the wiring such as from the battery to the converter.

[Whitehat]

Thanks all. I appreciate your knowledge and the time you took to share it!