Originally Posted by
horizon flyer
The AGM ( Advanced Glass Matt ) batteries in both aircraft and ground vehicles has been a bit of a disappointment and do not live up to the promise of long life with no maintenance and seem prone to sudden failure with no warning after about 3 years on average.
Interesting view. However that is no where near my experience as any battery that gives you only 3 years has either a factory defect, has in-service abuse, or the aircraft electrical system is not to spec regardless of battery chemistry.
And while each battery chemistry has their pros/cons, for your average private aircraft owner, an AGM battery provides the best bang for buck in general IMO with my recip customers averaging 7+ years life and turbine customers 5+ years.
But keep in mind, even a lithium battery will not last with abuse or a poor performing electrical system.