Oh. I thought the recommendation on previous post on OBC was to bypass it and get an integrated charger. It looked like the Lester wanted me to use their bypass cable so the cost would be $300 for a charger/controller and $90 for the bypass cable.
Some guys like to bypass the OBC and buy a different battery charger. I've always replaced the bad OBC and stuck with the factory battery charger. The new Club Car OBC's are less prone to fail than the older ones.
Thanks for all the feedback. Besides not terminating the charge, my OBC also allows the cart to drive when it is charging. I did look into replacing the OBC. This caused me to pay more attention to my other cart where I suspect the OBC may also be over charging the batteries too. I am starting to see similar symptoms of boiling over of the batteries. Faced with prospect of replacing two OBC, I decided to buy a new smart charger that does not require jumping out the OBC. The MAX48 is 15A, can be found for $200 with free shipping. It plugs into the existing 3-pin charge port. The documentation is awkward but the feedback is from the charger during operation is simple and straight forward. Hopefully this marks the end of this thread !