I just got a new Garmin Echo 150 depthfinder that I want to mount on my front deck, and I want to have the battery near it in the front. Also, I'm hoping it can fit into some kind of waterproof case so I can leave it on the boat. What do you guys suggest? I was thinking of a lawn tractor battery maybe, but what kind of battery box can I use? Thanks.

Why not just run wiring to your starting battery?

I don't want the hassle of splicing wire on and running it. Any recommendations?

I got a lawn mower battery and duck raped the wired to it IM sure there's a more better way but that's how I did it it sits under the front deck of my johnboat and only runs a lowrance mark5 I charge it once a month and run it at least 30 to 40 hours between charges

Sry typing on a phone duck rape that's funny

http://www.cabelas.com/product/Cabelas-Rechargeable-12-Volt-Battery/700551.uts?Ntk=AllProducts&searchPath=%2Fcatalog%2Fsearch.cmd%3Fform_state%3DsearchForm%26N%3D0%26fsch%3Dtrue%26Ntk%3DAllProducts%26Ntt%3Dbattery%26WTz_l%3DHeader%253BSearch-All%2BProducts%26x%3D26%26y%3D3&Ntt=battery&WTz_l=Header%3BSearch-All+Products

Small, light, rechargeable, and made for this purpose.

http://www.cabelas.com/product/Cabelas-Rechargeable-12-Volt-Battery/700551.uts?Ntk=AllProducts&searchPath=%2Fcatalog%2Fsearch.cmd%3Fform_state%3DsearchForm%26N%3D0%26fsch%3Dtrue%26Ntk%3DAllProducts%26Ntt%3Dbattery%26WTz_l%3DHeader%253BSearch-All%2BProducts%26x%3D26%26y%3D3&Ntt=battery&WTz_l=Header%3BSearch-All+Products

Small, light, rechargeable, and made for this purpose.

I just picked this exact battery up at my local cabelas for $16! It's awesome. Buy it!

Thanks guys