Dead battery

[crgross1]

If the battery switch is left on with nothing that draws power from it left on the battery will go dead after a few days.<br />The only thing we can figure is that the engine (a 150 HP Mercury) some how is dragging down the battery.<br />On the other hand if the battery switch is turned off this does not happen.<br />When running, the Garmin FF indicates a charge rate, as does the dash voltmeter, of 14+ volts. <br />Any ideas of how to find the drain culprit in the engine would be helpful.

 

[Perfidiajoe]

Re: Dead battery

If the boat is left in the water it could be draining through the engine to the water (ground). If you remove one terminal (cable) from the battery, & put a test light or volt meter in series with the battery & the cable, with everything off you should show no voltage. If you do show voltage, disconnect each accessory, one at a time, until you see no voltage draw, & you found the problem. Good Luck, Joe

 

[timmathis]

Re: Dead battery

Anytime you leave switch on it will kill batt!<br />You should have an acc. position other than switch on all time.