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I finally outgrew my garmin 62 and it's time for a real chartplotter. I don't have a 12v system installed in my skiff and I don't any desire to add one.

Has anyone installed something like a Elite 7 or similar on a grab bar with a self contained battery? I've toyed around with the idea of repurposing a laptop battery or maybe building a small battery box for a small lithium battery on the grab bar.

I'm just trying to avoid installing a battery and battery box in the bow and chasing wires all over the place.
 

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You might look into small sealed lead acid batteries. There are many different sizes most are under 10lbs.

http://www.interstatebatteries.com/b/sealed-lead-acid-sla/11-0-13-0-volts/N-18Zzihwq2Zzihwsq?dsNav=A~Part+Number&searchTerm=null

You could also do ni-cd. Much cheaper then lit-ion and no special chargers.

http://www.interstatebatteries.com/search.aspx?dsNavigation=Ns~product+Type%7c101%7c1%7c,N~44-2147384810-4196097543

Make sure you look at the draw from your gps unit and get a battery that will last all day.
 
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