More on the charger ...The brand is ACCUMATE.

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The advance "IUoU-I" (marine quality) interactive 3 stagecharging program
ensures a highly effective and complete charge. This is achieved as follows:
1) A 1.2 amp effective charge current is maintained throughout the main
charging stage for maximum charging efficiency and minimum charge time for
both 12 volt and 6 volt batteries
2) The charging voltage is precisely monitored and when the voltage has
risen to 14.3 volts it is then held at this level until the current has
fallen to 200mA, to ensure a full charge
3) The charging program now switches over to "float charge" stage at a
voltage limit of 13.6 volt for correct long term maintenance of batteries
while out of service

Should the current drawn by the battery during maintenance "float charge"
stage exceed (for any reason) 200mA, the charging program automatically
reverts to the constant current charge stage until the battery is again
fully charged, therefore providing a stand by function.

100% automatic apart from the initial 6 or 12 volt selection
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