duel batterys
Submitted by diff on Wed, 2008-08-06 16:42
GDAY,
I HAVE A PROBLEM IVE GOT DUEL BATTERYS ON MY BOAT DOES ANYONE NO HOW TO SET THEM UP AS WHEN I SWITCH TWO BATTERY 1 OR 2 THEY WONT FIRE BUT WHEN ITS ON BOTH IT WILL FIRE PLZ EXPLAIN WHERE DO THE WIRES SURPOSE TO GO ????
CHEERS DIFF
Big Kev
Posts: 441
Date Joined: 10/06/06
Duel Batteries
It sounds like your switch is wired with both pos leads the red ones from batteries and power lead from starter motor are all hooked up to the both point on your switch. You should have battery 1 pos lead hooked up to 1 point on switch and battery 2 pos lead hooked up to 2 point on switch red power lead from starter motor should be hooked up to a third point on the switch the connection points on the back of the switch should be labelled.
Hope this helps.
Kev
FISHING IS MY ADDICTION
carassius
Posts: 126
Date Joined: 21/03/08
My understanding of dual
My understanding of dual batteries is this:
1. Parallel - positive to positive increases cranking amps but not voltage- ie 2 x 12v 20Ah = 12v 40Ah
2. Series - positive to negative increases voltage but not cranking amps- ie 2 x 12v 20Ah = 24v 20Ah
I would asume yours was the first example given that it won't fire under 1 battery meaning your cranking amps aren't up to the challengediff
Posts: 113
Date Joined: 03/04/08
thanks for that guys that
thanks for that guys that helps heaps. it will only fire when its on both not just 1 batt or the 2 batt confussed
diff captjack
synthos
Posts: 522
Date Joined: 23/06/07
carissius ?
So is carissius right ? I now have dual batteries to and was just looking at it and thought its stupid all my boat electrics are wired to the battery 1 so I can probatly crank the engin on battery 2 but no electrics will run I think I need to set up a distributer box from the switch to the electrics or is this normal ?