I thought i had the problem solved...
battery in 96 buick century would go dead after a day or two. I swapped batteries from my pontiac.. problem seemed solved.
after a while i decided to swap the batteries back... the problem still seemed solved.. I let the buick go untouched for probably two or three weeks i guess.. so then i decided to start it up... very low voltage, not enough to crank.
so i jumpstarted it.. let the battery charge up a couple of minutes. turned it off.. it started back up fine. Put the battery under a load tester for 10 seconds. The battery held the charge fine and stayed in good range.
So now my questions are:
Should I buy a new battery? (the battery seems fine when used on a daily basis, and the load tester said it was ok)
Isn't it unnacceptable that a car sit only a few weeks and not start?
Could it be a small drain on the battery that drops the battery voltage over time?
Is a charging system of 16 volts while running an indication of a bad altenator? and if so could that be draining the battery when the car is off?
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