How Long Should Agm Batteries Last. A replacement battery that is rated for 7 years starts to prorate after just 2 years a 30 less life expectancy. For example many gel batteries typically last 1100 cycles absorbed glass batteries 600 cycles and lithium iron phosphate batteries 7000 cycles.
While flooded batteries tend to experience a capacity fade after two years and often have a service life of up to five years AGM batteries can last up to twice as long. Whenever you arent going to use the RV battery for 2 or more months it is recommended that you disconnect its ground wire so that it doesnt discharge. These batteries are completely leak-proof and perform pretty good considering an average of 1 to 3 of self-discharge rate every month.
When are AGMs not AGMs.
Limit to long-term storage of AGM batteries. AGM absorbed glass mat batteries are the most common type of batteries used in ATVs today. Most marine batteries last anywhere from 2 to 5 years depending on the level of care you give them. When are AGMs not AGMs.
