Oops. What did I do? Incorrect battery charging HJ60 24V

[georgebj60]

Well, I went to top off one of the batteries in my HJ60, but mistakenly connected the charger as if it was a normal 12V setup - positive to positive, negative to negative, on one battery only.

When I did this, I only had the truck for a few days. And maybe it did this before but now I need to bring the RPMS up to about 1200 to get the battery light to go off on the dash. Did I screw something up?

I was using a small charger, like 0.75amp (the one I use for my motorcycle). I had left it on for a few hours....

 

[Laughingjackal]

I am far from an expert but I leave my HJ on a car charger for months at a time with no problem. Driver side battery only, positive to positive...neg, neg. No issue. I then drive it daily for several months, no issue. Not sure if that helps you but from my experience that wouldn't have screwed anything up.

 

[georgebj60]

Good. That's what I wanted to hear. Thanks for the reply.

 

[Freewheel]

Hey George, what you are describing is quite common. Search mud for "charge lamp relay"

There is a relay that tends to get hairline cracks in the solder points in the circuit board. Revving the engine a bit can bridge the gap.
Resoldering the relay can often help. Replacement relays are expensive and hard to find, but repairs are often successful.

 

[georgebj60]

Wow. That's great info. Thank you. I had done a search before, but I didn't find the relay issue. I will look it up now and see if I can fix this.