View Full Version : jumping a battery
August 8th, 2010, 10:22 AM
if my cranking/electronics battery dies, can i jump it from one of my tm batteries? and if i can, do i need to unhook the wires so it's only a 12v and not a 24v?
August 8th, 2010, 11:50 AM
Yes and Yes
August 8th, 2010, 04:33 PM
I did that not too long ago. Left the master switch on for about 2 weeks. Went to hook up and the crankin battery was DEAD!!!! Wouldn't even click. I just hooked up anyway and grabbed the jumpercables. A jumpbox is another great thing to have with you at all times. Mine died. I need to replace it
August 8th, 2010, 07:01 PM
so hook up 1 of the tm batteries to the starter and then hook jumper cables from tm battery to cranking battery after i start engine, right?
August 8th, 2010, 09:12 PM
If you jump your cranking battery with your trolling battery you do not have to disconnect the trolling motor wires and the jumper wire between batteries... you just have to jump the cranking battery with cables connected to only 1 battery. not both...you can prove this if you get a multimeter across both batteries you get 24 VDC and when you probe pos & neg across one while its all still connected its 12volts.
August 9th, 2010, 04:17 PM
cool, thanx dude
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