Thread: Boat Batt. Issues...HELP

I have a 997SI and have it hooked up to the cranking battery. When I start the motor it shuts down the 997, not enough voltage. My thought is this, I buy another deepcycle batt & run all the electronics to it, let the cranking batt do its only job, and have the 2 trolling batts do their only job. Does anyone have this set up, if not what do you have???

Originally Posted by Dixie Boy

I have a 997SI and have it hooked up to the cranking battery. When I start the motor it shuts down the 997, not enough voltage. My thought is this, I buy another deepcycle batt & run all the electronics to it, let the cranking batt do its only job, and have the 2 trolling batts do their only job. Does anyone have this set up, if not what do you have???

I had this problem when I first got my boat. The cranking battery just didn't have enough reserve. Replaced it with the largest marine battery I could get at Wmrt, and no problems since.

You also might want to check the draw from your starter. If it is pulling a lot of amps, that would be causing your problem. <*)}}}><

CC how do you check the draw from the starter? I am an idiot when it comes to engines, bare with me!!

also make sure all connections are clean and tight

Originally Posted by Dixie Boy

CC how do you check the draw from the starter? I am an idiot when it comes to engines, bare with me!!

Use a dc current clamp, or let the auto store check it for you. Prob easier to tow the boat to the shop rather than pull the starter...

Could also be a weak battery.

that's what happened to me,I changed the deptfinder to it's own battery and of corse no problem anymore. lots of draw on the battery starting the motor. good luck

Originally Posted by beagle man

that's what happened to me,I changed the deptfinder to it's own battery and of corse no problem anymore. lots of draw on the battery starting the motor. good luck

Smart move....

Brand new Optima d34m. Going with the d31M and see if that works. How do you charge the batt for the depthfinder, 3 bank charger or relay the cranking batt to the depth batt & let the altinator charge them both?

Originally Posted by Dixie Boy

Brand new Optima d34m. Going with the d31M and see if that works. How do you charge the batt for the depthfinder, 3 bank charger or relay the cranking batt to the depth batt & let the altinator charge them both?

If the alternator isn't keeping one battery charged, it probably won't be much use trying to charge two batteries. If you aren't charging your cranking battery between trips, there's your problem. The outboard can't keep up unless you make plenty of long runs.