Viper wrote:Source of the post
Those are AGM which is fine as long as ALL your batteries on board are AGM and your charger is designed to charge AGM batteries.
Today, I have four batteries. The one for the house is an AGM 105 AH battery that is two years old. The two engine batteries are wet cell. The three of those are charged by a 60amp Charles charger through an isolator that can be set for AGM, wet cell, or gel. The generator battery is on a separate 10 amp Charles charger. The intent is to set up 3 firefly 4 volt batteries charged by the inverter charger, have the 60 amp charger charge the two engine batteries, and continue with the 10 amp charger for the Gennie.
I don’t see a need to buy the more expensive AGM’s for the Gennie or the engines which will help defray the cost of the Firefly’s. The new setup will also provide the ability to switch all three to the inverter charger if the 10 year old 60 amp gives out, of course, albeit buying AGM’s for the engines.
Edit to add: the current setup for 60 amp is for wetcell charging which is a compromise with the AGM house battery. That will be corrected with the new inverter charger.