AGM batteries longivity ?
My buddy went to my storage unit in PHX and checked out my Toy Hauler this afternoon. Toy Hauler has been in storage since last April, the end of dune season. This year its in a 45'x12' big garage, so...
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AGM Batteries are great, but you must know how to maintain them. I own a large Marina and RV Park. Been selling Batteries for over 30 years. AGM secrets? Total charging voltage should be at 14.4 volts, no more, or less. A lot of RV convertors are more like a power supply with fixed voltages, not really a good charger. The best way is to install a quality charger, or quality Solar. No discharge below 50%, keep cool when charging, purchase only high end AGM's. We sell Lifeline. The deep cycle Batteries, when properly maintained, can last up to 12-15 years. Some Marine chargers will cycle the Battery every 21 days. This really makes them last.
