Battery for fish finders

[Float_down]

The other morning I was trying to charge my battery for my fish finder, to no avail. Must be pooched, so I got a little creative. I have an 18v makita drill set, so i took one of the battery's from it and hooked it up to the finder, and surprisingly it worked. Ran for about 4 hours on one battery, don't know if this helps anyone but it sure helped me.

 

[fishermandan420]

If you need a New battery Total Battery on dunlop is.the.best place in town

 

[CanadianAngler87]

cool that would be good just to have in the gear charged as a backup just incase! I picked up a battery for my fish finder just the other day for 30$ at the local tackle shop (Natural Sports). I have the same drill set ill be sure to toss an extra battery in for the "just incase"

 

[W_boughner]

Is your finder 12 or 18v ??

 

[fishermandan420]

Fishfinders are all "12" volts, but mine will run on 10-17 (full charge on my gell cell ) Full charge on the drill battery is prob around 22v.

 

[staffman]

Does anyone use a 12 volt motorcycle battery to power their fish finder.

 

[fishermandan420]

They are heavy and spill if tipped Over. Most use a 7ah 12v gell cell. I use a 4 amp and get 2 full days no prob

 

[BowSlayer]

Does anyone use a 12 volt motorcycle battery to power their fish finder.

I've tried it on my old unit that wasn't sold with a battery, heavy as heck and ya, if it spills you're screwed, and they are not cheap!!

 

[W_boughner]

I have a 12v 7.5AH from kw surplus and a 12v 22AH from a car booster works great

 

[staffman]

Good to know- no motor cycle battery !

 

[skoaler27]

You can pick two 12v 7ah SLA batteries up on amazon for $28 and free shipping. Nice to have an extra for a spare or to power other stuff off it. I personally use one to power my sonar and use the other to power my lights, fan and phone charger!

 

[CanadianAngler87]

whats the best way to charge the 12v 7ah batteries?

 

[Float_down]

Anyone think this will be harmful to my finder? They're 18v battery's. But it seems to run fine.

 

[NADO]

nice, you can pick up the 12v7ah from some canadian tire's for 25 bucks, I was having some issues with my stock battery not lasting on trips so I picked up a 12v12ah battery from Canadian tire. It doesnt fit in the battery slot in the portable case but it will fit in the case, downside is the thing cost 50 bucks but at least it has a lifetime warranty..

 

[skoaler27]

Could use a trustworthy trickle charger to charge it

 

[CanadianAngler87]

i just don't want to do damage the battery by using the wrong charger I'll see what I can find

 

[W_boughner]

Go to radio shack or future shop and get a 12v dc charger

 

[CanadianAngler87]

Go to radio shack or future shop and get a 12v dc charger

Thanks +1

 

[Knuguy]

Anyone think this will be harmful to my finder? They're 18v battery's. But it seems to run fine.

If your FF is 12V I think this will burn up your electronics if used for any length of time. I wonder how much charge was left on your drill battery? Maybe it was already down when you used it?

 

[skoaler27]

Check the voltage range on your FF. One of the ones I have is 10v-18v. A 12v battery actually has around 15v in it when fully charged.