while the lifetime AGM batteries are a good product for sure, but at a cost that is two-three times that of a Wet cell GC battery.
There are thousands of GC batteries in use every day that last 7 or more years. Having worked around golf carts for some years they get a work out every day. With proper charging, which a lot of folks and battery charger manufactures dont know much about, the average battery can go 7 or more years with little issue.
The biggest issue with most RV installed chargers is they do not charge at high enough voltage for long enough to fully charge the battery.This is especially with a lot of solar charge controllers.
If you read Handy bob solar's web you will see what is up with that.
https://handybobsolar.wordpress.com/the-rv-battery-charging-puzzle-2/
In some cases AGM batteries make better sense but for many, me included, good quality GC batteries charged and maintained properly look to be a better deal.
Veebyes wrote:
Installed a 4D Lifeline AGM battery in spring of 2010. Disconnected for the winter last week. Still going strong. 7 years & about 150 nights use per year. Near 6 months storage each year with zero maintenance.
In 7 years you would most likely be into your 3rd pair of wet cell GC batterys.