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benjaminfoster's avatar
benjaminfoster
Explorer III
Mar 31, 2026

House Battery Not Holding Charge , Bad Battery or Converter Issue?

Hi everyone,

 

I’m having an issue with my RV house battery not holding a charge for very long. Even after being plugged into shore power overnight, the battery seems to drain pretty quickly once I disconnect.

Lights dim faster than expected, and basic 12V usage doesn’t last long at all

I’m trying to figure out whether this is:

A weak/aging battery

A converter not charging properly

Or possibly something else in the system

I haven’t done detailed testing yet, but I’m planning to check voltage soon.

Has anyone experienced something similar? What would you check first in this situation?

Any guidance would be really appreciated

3 Replies

  • Typically a battery that won't hold a charge is a bad battery, either from age or being discharged so low the capacity is diminished. But yeah, you'll have to have it tested. 

  • You just asked the same question twice. Save a little power from charging your phone by not repairing yourself?

  • You really need to get a battery tester to start, it's more than just voltage, need to check on a load and see what the condition of the batteries are...

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