The watering issue is underappreciated. One of the sweetest attributes of an industrial battery is it's electrolyte capacity (includes GC batteries). An excess capacity battery has an improved service life of almost 20% all other things being equal. And that is yet another reason a super premium AGM battery like the Lifeline is superior --- the mat used in Lifeline batteries is 500% more expensive than ordinary AGM matting.
Don't add more than 5 oz of water to a car jar battery cell then just let it sit. The electrolyte must mix and it cannot do it withour help. Load the battery bank so when the charger resumes charging it will go into bulk mode.
The optimum fill point is to submerge the plates without encouraging burping. Of course AGM and sealed alternative chemistry batteries do not need this kind of maintenance.
My AGM lifelines have been offline since February. We shall see effects of this on a 10-year old accumulator including end capacity. I need to build another shop room. Work tables and tons of $$$$ shelves.
