Converter problem

[pushtrk99]

My 2 6cell batteries have dropped to10.39 and I checked my converter and it is putting out 13 plus volts on the discharge going from the 9260 converter -as long as I am plugged in to shore power or engine running everything seems OK but if I unplug from shore power or shut down my engine lights are real dim and my meter shows like 9 or 10 volts -open for suggestions-thanks Rich

[CLIFFTALL]

Have the batteries checked out.

[jackrobinryan]

Unplugged and engine off means a problem with one or both batteries, not with the converter.

Or, possibly a loose or dirty connection to or between the batts.
J

[clyon51]

If you have 13+ volts on the coach batteries while on shore or with engine running. Then all is fine with both of those charging systems, at face value. When you take these away and the batteries drop to 10 - 11v, you have one of two problems.

1. The batteries were very low and you have not charged them long enough (assuming you may have just got it out of storage) In that case you want to charge for 12-24 hrs and make sure batteries are topped off with distilled water.

2. Your batteries are shot and will no longer hold a charge. Have them load tested at a shop you would purchase new batteries.