I would think that the most common DC batteries are desined to be charged on the most common charging equipment. The engineers of this equipment are not stupid. Any later model 2-3-4 stage converter/charger is designed to adequately charge any of the common DC batteries out there.
All of them charge at well over 14 volts, My PD 9245 goes to 14.6, floats at 13,3-5. If you think that your Trojans need special charging, I'd say, go for it,
If I thought Trojans or any other DC battery needed special charging, I would not buy them.I myself would not even look at,....or care what the charging specs were, as they would do fine w/ my PD charger.