Battery For Side Imaging Unit

[kLuo]

I just recently purchased a Humminbird 798ci for my kayak and I was wondering what kind of battery and charger I can use. Since I do not have a trolling motor, there will not be any batteries already on board. I heard a small 12V battery will be enough, but how many hours will I be able to get out of this if I use side imaging? Also, what kind of charger do I need for this battery? Can I use my trolling motor deep cycle battery charger?

 

If anyone could recommend a type or brand of battery too, that would be really helpful.

[Wayne P.]

The safest battery for kayak use is a sealed one. You can get those and a charger at Radio Shack.

A 7 AHr size would take care of the time you would spend on the water.

The power requirement for the 798 is about 3/4 A. 

 

If you want to use your high amp charger, then a ATV/motorcycle or lawnmower battery would be the best choice. Avoid spilling the acid though.

[Jrob78]

You need a 12v sealed lead acid battery.  I use a 12ah to run my 798 on my kayak.  I have a buddy who uses a 12v deer feeder battery to run his 798 and it doesn't last through a full day of fishing, I'm not sure what the ah is on his though.  

 

This is the charger I use.  I'm sure you could find one cheaper but this one works great.

http://www.atbatt.com/amstron-12v-3a-sla-battery-charger.asp

[Wayne P.]

You need a 12v sealed lead acid battery.  I use a 12ah to run my 798 on my kayak.  I have a buddy who uses a 12v deer feeder battery to run his 798 and it doesn't last through a full day of fishing, I'm not sure what the ah is on his though.  

 

This is the charger I use.  I'm sure you could find one cheaper but this one works great.

http://www.atbatt.com/atbatt-com-6v-4a-sla-battery-charger.asp

 

You posted the wrong charger, that one is a 6V charger.

[Jrob78]

You posted the wrong charger, that one is a 6V charger.

You are absolutely right, thanks for catching that.  I meant to grab the one next to it.  The link is fixed now.

[kLuo]

Thanks for the responses so far. What is the right way to charge these batteries in order to prolong their lifespan? Do you guys charge them immediately after each use?

[Jrob78]

I charge mine immediately after use.  I think it's best for the battery to keep it fully charged.