Converter/battery voltage

[PecanMan5]

When the unit is plugged in to shore power, shouldn't the batteries read converter voltage with a multimeter? My batteries have severely depleted. The converter is working because all the 12v items are working. But checking the batteries, I am getting battery voltage, not 13.5v and will not charge.

I now have one of the batteries removed and on my shop charger. It reads charger voltage. Is there a fuse for the batteries or a protection circuit to prevent charging a depleted battery?

2014 FC 25

Barry

[idroba]

I assume you have your USE/STORE switch in USE. If you don't, the batteries will not charge.

[timmaah]

Does your year have a converter wall switch that turns the converter off and back on again? Make sure that is on.

Step 2 would be to check the voltage on the output of the converter itself.

[PecanMan5]

Am I wrong that in the store position that none of the 12v items like interior lights should be operating?

[TopGeorge]

regardless of use or store, your 12v stuff will get power from the converter as long as shore power is connected.

[PecanMan5]

Thanks all. My problem was a misunderstanding of the store/ use switch. I still find it interesting that with shore power plugged in, that the light on the switch panel tells you nothing. Unplugged it does. I am sure my batteries are well sulfated, but they are taking a charge.
It is also interesting that my Less expensive Bambi has a nice large battery switch and a large digital voltage readout.