In other words, you will never again achieve the full potential capacity of your 24V system. Do I hook the positive up on one battery and the negative on the other? The trolling-motor battery system consists of one, two or three volt batteries connected together in a series using jumper wire. Use a amp breaker for motors with more than 81 lbs. The batteries used to power the trolling motor should not be used to power additional accessories.
Many customers have questions on the subject of wiring trolling motors and marine electronics.
Marine Battery Wiring 101
The volt starter cranking battery delivers cranking power to the outboard motor. Hook up the 12V motor to the appropriate terminals of EITHER battery, and when you have exhausted it, switch the terminals to the other battery. Desert Angler. This will be your volt lead. The jumper wire should be the same gauge as the leads to the motor. It can also be used as the power source for onboard electronics, such as depth finders. It would be OK to do this a couple times, as in an emergency.