I will be using my Humminbird Helix 5 SI on a Kayak so I got a light weight battery to run it. After checking the Current draw with full backlight, and everything at max, it was only using a max of 460mA so this battery I'm getting should last me 8 to 9 hrs, and 7 at the advertised 615mA current draw. (dropping some knowledge for folks who are thinking about getting this particular FF, and wondering what battery to use) So I ended up getting this battery kit: https://www.austinka...Pack.html?last= It has recieved good reviews on different sites.

Do you have any 12V power tools with lithium ion batteries? I use my Milwaukee batteries to power a Lowrance Elite-4 HDI. I was out 6 hours today on one battery. I keep them in a small Pelican case with a waterproof disconnect.

Do you have any 12V power tools with lithium ion batteries? I use my Milwaukee batteries to power a Lowrance Elite-4 HDI. I was out 6 hours today on one battery. I keep them in a small Pelican case with a waterproof disconnect.

Good Idea, never thought about that. For me personally though, I rather use those batteries for my tools. Plus too late, I already bought the kit I posted.

Power chair batteries work great. I use two of these for 3-day boat shows where I run 2 HDS, and a NMEA network about 10 hours per day. They last but as you can expect, they are low nearing the end of day 3.

Wal marts carry 12 and 6 volt batteries of the 2-9aH variety. I have 3.

Ah. I was planning to use my trolling motor battery but seems various 12v options would work. I like the power tool idea

This was my set up for my seaeagle inflatable pontoon it worked excellent ...