Originally Posted by bbhero
Originally Posted by DallasTexas
All the Benz's I have owned have/had AGM batteries and the normally last 10+ years.
Having said that, they put their Batteries in Trunk or under the seat and not subjected to temperature extremes.
Great point ^^^^
In the trunk away from heat in the motor compartment is extremely helpful to battery longevity...
Back when I had my Lincoln LS, I replaced the factory battery at almost exactly 7 years out of necessity(1/04 build date, replaced 1/11). It rode in the spare tire well, and was vented by way of a hose running out of the car. The battery I pulled out was pristine enough that it could have passed as new, and I'd not really even touched it in the time I owned the car. I put another Motorcraft in it, and it looked every bit as good when I sold the car.
I have no idea who makes the batteries for Motorcraft, but apparently those at least were both high quality batteries, and the mounting/vent arrangement kept them exceptionally clean.