VinceAtReal4x4's
WInch and 4x4 rescue specialist
Was wondering if anyone has ever experienced odd longevity issues with Bosch AGMs. I got the Group 49 (big one) for a Gwagen diesel which is the stock size.
It worked great for about a year and a half. My starting speed became really slow over about a month of off and on driving. I thoroughly checked for parasitic drain, alternator issues, etc.. I monitor voltage in real time too with a dash gauge and it's always 13.5+ while running so it's not an electrical issue with the truck.
This was further proven after I took it back for a warranty replacement which Pep-boys did after putting it on their tester and agreeing it was "off". The new one solved the problem, until last month when the same thing started happening. I even had a Battery Tender hooked up to it full time. It's fine coming off the charger and when starting up after driving, but if you leave the stereo on for just 10 minutes or don't drive it for a few days, it's back to barely starting. The warranty won't cover another replacement so I'm basically out $200.
It worked great for about a year and a half. My starting speed became really slow over about a month of off and on driving. I thoroughly checked for parasitic drain, alternator issues, etc.. I monitor voltage in real time too with a dash gauge and it's always 13.5+ while running so it's not an electrical issue with the truck.
This was further proven after I took it back for a warranty replacement which Pep-boys did after putting it on their tester and agreeing it was "off". The new one solved the problem, until last month when the same thing started happening. I even had a Battery Tender hooked up to it full time. It's fine coming off the charger and when starting up after driving, but if you leave the stereo on for just 10 minutes or don't drive it for a few days, it's back to barely starting. The warranty won't cover another replacement so I'm basically out $200.