Name:  image.jpg
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Size:  71.4 KBIf trolling batteries are anywhere close to cranking battery, take starter cables loose from cranking battery at home and see if they will reach trolling battery. 9 chances out of 10 you have enough cable to hook to trolling battery.

Attached picture is a set up I built. One end to cranking battery other end to trolling battery. Anderson plug in middle. Unhook and tape up, on the water just plug two together, instant jump start.