My old 77 chev van is usually trouble free but it seems to be slowly killing my primary starting battery,I have dual battery setup, factory type setup its a camper type van.Charging seems to be taking place as the aux. batt reads 14.3v,I cant get the primary bat to take a charge this time.I have put new batts in the past but I just dont use this van enough to watch the voltage drain,I put maybe 700 miles a year on it,last year I used it in october and never started it til May of this year. I usually just jump it from the aux batt and drive for a while then it seems to charge with a good battery,but when it sits for awhile primary bat is dead and aux is fine at 12v .Now it wont take a jump unless I have the aux hooked up ?Hell I dont know what up with this thing ,probably right in front of my nose.
I have done some basic multimeter testing but Im missing or doing these test wrong.Thats where you guys come in,What are the testing procedures for a dual batt setup to check for a draing batt problem.I was told something in the alternator could be draining it also? It has an isolater type thing between the 2 batts,I assume thats what it is. Electrical is definately not my specialty either is a dual batt setup.
Any help would be appreciated as the only time I really use this van is up in the mountains along ways from home or other people.
I have done some basic multimeter testing but Im missing or doing these test wrong.Thats where you guys come in,What are the testing procedures for a dual batt setup to check for a draing batt problem.I was told something in the alternator could be draining it also? It has an isolater type thing between the 2 batts,I assume thats what it is. Electrical is definately not my specialty either is a dual batt setup.
Any help would be appreciated as the only time I really use this van is up in the mountains along ways from home or other people.