I have a fairly new pair of MK Gel 73.5Ah 12V batteries from a knackered Invacare electric wheelchair I'm trying to buy a mains charger for. Looking at your IP22 and IP65 chargers, it seems that gel batteries would be charged at 14.4V and not at 14.1V as specified by the manufacturer.
Can any of these chargers be configured for 14.1V?