Fish finder battery hook up

[Terry13111]

Would it be ok to hook my fish finder up to my motor battery? I would be using an inline fuse. Some say yes, others no. I don’t want to attach it to the trolling motor battery.

 

[FuzzyGrub]

Yes. Most consumer finders have low amp draw, so no concerns. Most of mine are connected to the starter battery. One has a large screen and amp draw, so it has a dedicated battery.

Trolling motors can generate noise the finder may not be able to filter out, so that is why they don't recommend that.

 

[LDUBS]

x2. Mine is on a separate fused wire direct from the starter battery to the FF. TM is on a separate battery.

 

[DaleH]

I've done it too on various rigs. Just be aware big OBs with a ton of peak starting amps can put such a load starting that some FFs shut off when cranking ...

 

[FuzzyGrub]

I've done it too on various rigs. Just be aware big OBs with a ton of peak starting amps can put such a load starting that some FFs shut off when cranking ...

Or at least a low-voltage warning/beep.

 

[KevinWI]

My rear locator is on the starter battery. I also have one on the TM battery..... such a low draw...no interference I've noticed.

 

[thill]

Or at least a low-voltage warning/beep.

True! Mine beeps every time with the 150 HP motor. Never does with the 50.

 

[thill]

I've done it too on various rigs. Just be aware big OBs with a ton of peak starting amps can put such a load starting that some FFs shut off when cranking ...

True