Do you have a single stage, or multi stage charger? If it is the old style single stage charger that is probably the cause of the battery boiling. Either way, once the battery starts boiling, or sulfating, it is probably not salvagable and will have to be replaced. Have you checked the individual cells to see if any are low on water, or completely dry?? If not be sure to check the cells on the boiling one, as well as the others. On my 1982 I ended up replacing 3 of the 4 8d batteries over several months, and finally changed my charger to a multi stage charger (Intelli Power). Have had no problems since.
|