How long does an AGM Battery Last?
We purchased an '09 TT a few weeks back. The battery is a 4D Powerstride Lifeline AGM that seems to be working well and is clean. I have no idea when it was installed, but I've got to assume that it'...
Forum Discussion
RJsfishin wrote:
I wonder how a BAD battery is built ? Most all the batteries that I have had fail, (a bunch) appeared to be fully charged, and actually were fully charged.
They stood at 12.7-8 state of charged, burned a 12v lite bulb very brightly, but when hooked to a load tester, they instantly drop to 0 - 5 volts. I'd really like to internally see what takes place in that situation.
Dadgummit, off topic again !!
Edit........
I have had super good luck w/ house deep cycle batteries, and not because I don't cycle them.
What happens is one of the connections between cells is weak so it will conduct current normally under light load but under heavy load it will have to high of resistance so the voltage will drop.
Denny
