Señor Gale, IMHO you are correct.
It takes a curious set of circumstances to spurious sulfate a positive battery plate when 5% A/H discharges are involved. BTW many old news telephone UPS systems used a shallow cycle battery maintenance recharge protocol. Lockheed Skunk Works managed to do the same thing with their gigantic bank of 8-D batteries. All PhD engineers and not a one had a clue. I installed a constant float voltage system, a 100-ampere charger for top charging, a six-hour spring wound timer and a single syllable set of instructions. Three years later and no complaints. The reason the timer was variable was because I did not trust them to not come up with the bright idea of adding more battery capacity.
