I've heard that batteries shouldnt be charged in the boat due to a possible build up of gasses that could lead to a minor explosion!? But, with current modern new SLA batteries, is this still an issue?
I need to have 2 SLA batteries in the MSW Envoy tug. Im toying with either having each battery sit almost alongside the motor ie just aft of midships so less ballast towards the stern is needed or, having the batteries side by side on a sliding base, just in front of the motor so I can hopefully get at them easily and remove them from the boat for charging.
Now, the hull is quite cavernous and easily able to take these of the size I intend using, (approx 134 mm long and 60 mm wide) but, when they are wired up in series to give a 24v supply and one battery also providing 12v for the motor, that's a bit of wiring to undo before you start pulling the batteries out of the hull.
Soooo, I was thinking of wiring them up and charging in situ. Is this a goer or, should I forget it altogether?