Thread: Wiring batteries and charger

Maybe this might help someone.

Based on picture #3 with the 12v line along with the 24v. Can you run the 12v line to a seperate fuse box and run some of your electonics that way rather than all coming from your main battery? I have a 24v trolling motor, will this mess it up if you do this? Are you pulling 12v from just the one battery using this if in fact it would work?

Originally Posted by boat49

Based on picture #3 with the 12v line along with the 24v. Can you run the 12v line to a seperate fuse box and run some of your electonics that way rather than all coming from your main battery? I have a 24v trolling motor, will this mess it up if you do this? Are you pulling 12v from just the one battery using this if in fact it would work?

That picture is for the older 12/24 trolling motors. If you are set up that way, yes you could use the 12V lead for other things. But I wouldn't recommend using it for a depth finder or GPS as you can get interference from the trolling motor. And yes the 12V comes from 1 battery. If you do it, double check yourself with a meter. You don't want 24V going to anything except the TM.

Originally Posted by IBNFSHN

That picture is for the older 12/24 trolling motors. If you are set up that way, yes you could use the 12V lead for other things. But I wouldn't recommend using it for a depth finder or GPS as you can get interference from the trolling motor. And yes the 12V comes from 1 battery. If you do it, double check yourself with a meter. You don't want 24V going to anything except the TM.

I have a buddy that has his front and back fish finders connected on the same power post, do you know if this could be causing a problem with his equipment?

He is losing the bottom on his back fish finder once and a while and it's acting very eratic. Let me know what you think

Originally Posted by Jig Wig

I have a buddy that has his front and back fish finders connected on the same power post, do you know if this could be causing a problem with his equipment?

He is losing the bottom on his back fish finder once and a while and it's acting very eratic. Let me know what you think

NO, he is probably just getting interference from the front DF. This can happen a lot in deeper water when both DFs operate at the same frequency. Thye next time it happens tell him to turn the front one off temporily and see if it clears up. Make sure they are connected to the starting battery and not the the trolling motor battery.

Hey thanks for the quick response we will try that the next time out!

I just bought a boat that has a 12 volt trolling motor but has two batteries hooked to it, positive to positive and neg to neg. Is it wired this way so the batteries will last longer and when I hook my charger up do I need to hook to just one of the batteries and will it charge both at the same time? Thanks

Originally Posted by CUZZIN

I just bought a boat that has a 12 volt trolling motor but has two batteries hooked to it, positive to positive and neg to neg. Is it wired this way so the batteries will last longer and when I hook my charger up do I need to hook to just one of the batteries and will it charge both at the same time? Thanks

Yes, as long as both batteries are the same type and capacity and in good condition, they will look like one big battery to the charger..., and you will get twice the run time as one battery. As the batteries are hooked up in parallel, both will charge at the same time.

Dave

Thanks Dave for the quick response this is the most helpful forum there is.

12 volts will come from one battery but they seem to equal out on my meter as the die when pulling 12 off as shown above.

I have had to put two (up to five) dead batteries to keep fishing at night.

A meter is HANDY TOOL wish i understood everything on one.

Good post