Thread: changing from 12volt to 24 volt

I have 3 batteries in my boat. I run my electronics off of my cranking battery. I run the trolling motor off of the other 2 but I'm running on 12 volts. The trolling motor batteries are 2 12volt hooked up in parallel. There is no interference picked up by the HBs.

Thnx Greg for posting the question. I talked with several people today and is leaning towards putting a third battery in a storage compartment adjacent to the battery box and extend the cranking battery and all other lines over there. That way, the current two batteries can be dedicated for the the TM only.

Greg, it's the same as a LOT of 36v trolling systems on the bigger bass boats. A bunch of guys only run 3 batteries. Shouldn't be an big issue to do it. The batteries are ran in parallel to achieve the 24 volts for the trolling motor then you would just hook up one Battery as you would normally for your cranking battery and electronics. To achieve the 24 volts it needs to be -to trolling motor then with a jumper wire + to (- 2nd battery) then (2nd battery + to trolling motor. Hope that makes sense.

Originally Posted by Old Sarge

Greg, it's the same as a LOT of 36v trolling systems on the bigger bass boats. A bunch of guys only run 3 batteries. Shouldn't be an big issue to do it. The batteries are ran in parallel to achieve the 24 volts for the trolling motor then you would just hook up one Battery as you would normally for your cranking battery and electronics. To achieve the 24 volts it needs to be -to trolling motor then with a jumper wire + to (- 2nd battery) then (2nd battery + to trolling motor. Hope that makes sense.

Thnx Old Sarge, would that cause any interference in the electronics? When you bump the TM, it's still pulling from that battery where the electronics are connected.

I have a 36 volt trolling motor and only three batteries in the boat. I run graphs and cranking off one of the tree with no interference. I do carry a portable jumper pack just in case big motor will not start. I would say try two first and save the weight and money. Just my two cents.

Originally Posted by l_tedford

I have a 36 volt trolling motor and only three batteries in the boat. I run graphs and cranking off one of the tree with no interference. I do carry a portable jumper pack just in case big motor will not start. I would say try two first and save the weight and money. Just my two cents.

Thnx Tedford, it's always nice to save money.

Originally Posted by Jiggermaxx

Thnx Greg for posting the question. I talked with several people today and is leaning towards putting a third battery in a storage compartment adjacent to the battery box and extend the cranking battery and all other lines over there. That way, the current two batteries can be dedicated for the the TM only.

This is the best solution. If you decide to go with 2 large batteries, you can use a small gel cell to run your electronics if you get interference from the TM.

I run my electronics off my cranking battery. Tm batteries are dedicated to Tm in my boat. Works well for me, also if you add a third put the two together for the Tm and use the separated third one for your cranking and electronics. Just my opinion.