Putting the bat­ter­ies to bed...

Canal Boat - - Back Cabin -

QWe have two do­mes­tic bat­ter­ies of 120Ah in se­ries on a 24v sys­tem. I am con­sid­er­ing fit­ting two ad­di­tional bat­ter­ies, but the only avail­able space is un­der the bed. This is fairly close to the ex­ist­ing bat­tery lo­ca­tion. Is this okay in your view and if so, should I go for sealed bat­ter­ies only or would flooded lead acid units be all right? I am con­cerned about pos­si­ble gas es­cape un­der the bed.

PHIL DEA­CON, via email

ATONY REPLIES... As long as the bat­tery con­nect­ing leads are large enough to min­imise volt-drop and the pos­i­tive main lead is on one bat­tery pair with the neg­a­tive on the other, I can see no elec­tri­cal rea­son why you should not do as you sug­gest.

The BSS will re­quire the bat­tery space to be vented but that is eas­ily done now that most bat­ter­ies are sup­plied with a sin­gle fit­ting to ac­cept a vent hose. All you need to think about is how to vent the two new hoses over­board. Even sealed bat­ter­ies have a vent to pre­vent them ex­plod­ing if sub­jected to ex­cess charg­ing volt­age.

Per­son­ally, I would avoid a sealed bat­tery. Al­though AGM bat­ter­ies have bet­ter charge and dis­charge char­ac­ter­is­tics, I feel the dif­fi­culty in or­di­nary boaters test­ing them far out­weighs the ad­van­tages, but that is a per­sonal con­sid­er­a­tion.

You can place bat­ter­ies un­der a bed, but en­sure good ven­ti­la­tion

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