Additional Electronics Battery

I'm thinking about adding another battery dedicated just to my electronics. That way, no matter how long I fish, I wont have to worry about pulling down my starting battery. I don't really want to run them off my trolling batteries since it is a 36 volt system. Don't want he extra load on one of the trolling batteries. I don't think I have enough room in the back for another battery so I'm thinking about adding one to the storage compartment in front to the drivers console with a dedicated fuse block just for the electronics. What are your thoughts pro or con?

jumper cables is what i carry

Whether you do or don't, I'm still gonna think you are a gewber. However, you have my permission.

Wannabe...

I carry jumper cables....never had to use them but they are there if I need them....I run my live well pump, a air pump, and my electronics all off of my cranking battery. I have thought about mounting one of those Harbor Freight solar battery chargers on the right rear corner of my back deck and connecting it to my cranking battery but never pursued it.

Jumper cables will work but that would mean I would have to disconnect one of my trolling batteries off its series to jump the starting battery, right? You can't jump a 12 volt system with a 36 volt system.

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Originally Posted by Speck

Jumper cables will work but that would mean I would have to disconnect one of my trolling batteries off its series to jump the starting battery, right? You can't jump a 12 volt system with a 36 volt system.

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Yes you can. Just connect the jumper cables to ONE trolling battery.

Speck I have thought of this also, but with limited space I have yet to act on it. Was wandering if one could use one of the lawnmower batteries that are 12volt since they are smaller and would fit in different places. don't know if it is feasible or not but have thought of this


M

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Originally Posted by ATM

Yes you can. Just connect the jumper cables to ONE trolling battery.

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So even if they are connected in series, as long as you only connect the jumpers to one trolling battery, you are still only drawing 12 volts off of it?

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Originally Posted by maachuu

Speck I have thought of this also, but with limited space I have yet to act on it. Was wandering if one could use one of the lawnmower batteries that are 12volt since they are smaller and would fit in different places. don't know if it is feasible or not but have thought of this


M

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I thought the same thing Larry. Just not sure how long a lawnmower battery would last.:dono

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Originally Posted by Speck

I'm thinking about adding another battery dedicated just to my electronics. That way, no matter how long I fish, I wont have to worry about pulling down my starting battery. I don't really want to run them off my trolling batteries since it is a 36 volt system. Don't want he extra load on one of the trolling batteries. I don't think I have enough room in the back for another battery so I'm thinking about adding one to the storage compartment in front to the drivers console with a dedicated fuse block just for the electronics. What are your thoughts pro or con?

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That's how I have mine now. I also added some 3 prong marine plugs to the side of the box so I could plug other stuff up when needed, like the minnow bucket, lights for night fishing ect.

On my previous boat I ran four pumps on timers, an air pump, and two fish finders. This load regularly killed the Group 24 575 CCA cranking battery the boat came with. I upgraded to a Group 24 800 CCA battery; this was an improvement, but still died on occasion. That's when I started carrying jumper cables.
I put an Exide Group 27 1000 CCA battery in my new boat, with no problems thus far. But I now only have two pumps on timers, an air pump, and two fish finders.
If it were me, I would go with upgrading the existing cranking battery.

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Originally Posted by Speck

So even if they are connected in series, as long as you only connect the jumpers to one trolling battery, you are still only drawing 12 volts off of it?

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Correct. + and - from ONE trolling battery to the cranking battery.
I know where you're coming from. If you tried this stunt with AC current you'd let the smoke out of something! First time I did it I was gun shy. I just knew I was going to see a battery explode.

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Originally Posted by ATM

Correct. + and - from ONE trolling battery to the cranking battery.
I know where you're coming from. If you tried this stunt with AC current you'd let the smoke out of something! First time I did it I was gun shy. I just knew I was going to see a battery explode.

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Cool, thanks, I was more worried about frying my starter. I haven't had a problem yet, but I've been turning off my console unit while fishing up front. Just don't want to get stranded.
Thanks for the input.

Here's a couple pics of mine, I'm sure it could be done better. I also added another charger, the one in the back was a dual battery.


Attachment 136458

Attachment 136459

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Originally Posted by Speck

So even if they are connected in series, as long as you only connect the jumpers to one trolling battery, you are still only drawing 12 volts off of it?

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Correct

we got a winner

I got a 27 series interstate for my start/accessories. Run both livewells (control right in the middle between min/max) front FF (turn the console ff off when up front same as you) and minner aerator-haven't had a problem yet-But I'm only turning over half the HP as you:)

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Originally Posted by "G"

I carry jumper cables....never had to use them but they are there if I need them....I run my live well pump, a air pump, and my electronics all off of my cranking battery. I have thought about mounting one of those Harbor Freight solar battery chargers on the right rear corner of my back deck and connecting it to my cranking battery but never pursued it.

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Have a friend that use one those solar panels and likes it.

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Originally Posted by Speck

Cool, thanks, I was more worried about frying my starter. I haven't had a problem yet, but I've been turning off my console unit while fishing up front. Just don't want to get stranded.
Thanks for the input.

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Speck, ATM is right it's the same as tapping a transformer. You get 12 volts depending on where you tap it.As long as you connect to positive and negative you of your batteries you will get 12 volt.

Quote:

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Originally Posted by ATM

On my previous boat I ran four pumps on timers, an air pump, and two fish finders. This load regularly killed the Group 24 575 CCA cranking battery the boat came with. I upgraded to a Group 24 800 CCA battery; this was an improvement, but still died on occasion. That's when I started carrying jumper cables.
I put an Exide Group 27 1000 CCA battery in my new boat, with no problems thus far. But I now only have two pumps on timers, an air pump, and two fish finders.
If it were me, I would go with upgrading the existing cranking battery.

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I think your water pumps were killing your battery. Depth finders and air pumps are relatively low draw. For depthfinder only use, I use a low amp 12 v. battery that works great.

Amazon.com: Humminbird 7700281 GCBK CSB GP1272 Portable AGM Battery and Charger-Color may vary: GPS & Navigation

if you are only running the electronics here is the best bang for your bucks !!! get the 2 batteries with charger for $54.99.


http://images.cabelas.com/is/image/c...ei=127&wid=127Cabela's Rechargeable 12-Volt Battery
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$24.99 - $57.99


$24.99 - $54.99

With that motor that you have you most likely have at the very least a series 27 if not a series 31. You will not have any problems till the battery gets old or it has a plate come lose or break. If for some reason that its smaller than a series 27 then you will have problems it takes a lot to turn that thing over and should have a 27 already there. It would not hurt to go to a series 31 if you do not have one there, but I would wait till its time to replace it for the up grade to the battery.

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Originally Posted by Big C

Speck, ATM is right it's the same as tapping a transformer. You get 12 volts depending on where you tap it.As long as you connect to positive and negative you of your batteries you will get 12 volt.

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Ahhhhhh, ok. Thanks Big C