My question is regarding how to get the best life and performance from my AGMs.
I have a couple of 6V - 220Ah AGMs in series used basically as a UPS for short term power outages.
I do have solar and wind but also keep a 3 stage "smart charger" on them to keep them topped off.
The same applies to my ebike AGMs which are charged as a 12v bank. I swap the use of the Iota 15A charger with QD4 between the two systems.
According to the charger manufacturer, this charger can be left on the batteries with no harm.
I tend to keep the charger on each for 2-4 days then swap. The charger puts out right at 13.6V float charge and rarely gets into bulk charge or absorbtion unless I am using the batteries quite a bit.
Does this periodic constant 13.6V float charge do any harm or shorten the life of these AGMs or is this method the best way to keep them in top shape?
As noted, long life is my goal.
The both seem to have very good prices, free shipping and very good service IMO. So far I'm very pleased with the quality as well.