I've been looking for a while for a nice battery box that will house 2 group 27 batteries to upgrade my single battery to dual battery setup for more capacity. I was having a hard time finding anything short of the $150 or more metal boxes made for racing. I found a nice plastic one for about $70 and thought I would share if anyone else is looking. It's a model 3H made by Dyno. I bought it from Fisheries - Product Detail
I bought the new cable from Custom Made Cables : Gregs Marine Wire Supply, Welcome Aboard!
who does custom length and lugs of your choice at a very resonable price and ships quick. The 2 group 27 batteries I put in are wired in parallel and fit in the box perfectly. The box was a little taller than I needed so I cut it down in height a bit which got rid of the larger cable routing cutouts. I drilled smaller holes and used rubber grommets for cable chafe protection for a nicer fit. For the vent hose I cut the hose mounting tubes off the old box and epoxied them onto the new one. Here's a link to pics of the old box and new installed box. dual battery box pictures by 62yunz - Photobucket
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