96 Bounder house battery's not charging while driving

[stepside454]

We recently purchased this 96 Bounder on a F53 chassis. We just drove from STL to Tulsa. By the time we got here the house battery's were dead. It has 2 6v golf cart battery's .its been plugged in for 2 days , they show charged now . Any ideers?

[Virago-Rider]

First, remove battery cables, clean connectors and terminals. Even a small amount of corrosion can make things wonky.

Get a volt meter, check voltage with everything off, with engine running and plugged in to power.




🚌🚍🚌
1998 Thor Windsport 33SL on 1997 F53 chassis.
2007 Chevy Uplander TOAD.
1985 Yamaha Virago XV700

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[okgc]

Our 95 Bounder did not charge coach batteries with engine running.
AC power or generator running was needed to charge.

Note: Onan recommends generator minimum use of 2 hours per month and 100 per year.

[BFlinn181]

I think you'll have to first find out if your system USED to charge both battery groups on the engine alternator. If so, what's gone wrong. You can measure with a volt meter, at rest, charged batteries should read about 12.7 v. Under charge, the reading should go up to 13.4 v or more. There are 'boxes' you can add if you never had the capacity to charge both groups while under engine alternator, generator, or shore power. One such box is Trik-L-Start.
Ultra Trik-L-Start LSL Products

Check and see if your battery boost switch works, it connects both House and Chassis batteries for emergency starts. The same relay is sometimes used to connect the batteries together when there is charging available. If it's bad, replacing or repairing that should allow all your batteries to charge again. The Trik-L-Start is usually only added when you don't have a built in system.

[stepside454]

As it turns out, somebody, at some point replaced the isolater, in the process wired it wrong. Fortunately it didn't do any damage. It was a 100.00 fix & Buffs RV in Festus ,MO

[MT4Runner]

Originally Posted by stepside454

As it turns out, somebody, at some point replaced the isolater, in the process wired it wrong. Fortunately it didn't do any damage. It was a 100.00 fix & Buffs RV in Festus ,MO

Awesome! Thanks for the followup.

I was reading the initial posts and didn't catch the date and was going to suggest to check the isolator/solenoid.

Originally Posted by okgc

Our 95 Bounder did not charge coach batteries with engine running.
AC power or generator running was needed to charge.

Note: Onan recommends generator minimum use of 2 hours per month and 100 per year.

Maybe add a solenoid so with the engine running (and the alternator producing power, obviously), your coach batteries can charge off the engine circuit?