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Old 01 June 2011, 18:22   #1
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Country: USA
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Waterproof battery-box/GPS/VHF setup

I decided to put electronics on my Avon Searider 4m, and since it's usually a pretty wet ride I wanted the entire system to be self contained and waterproof. I didn't really find any plans on the internet, so I thought to post my setup here in case anyone is looking for ideas.

The VHF and the GPS units power/data cables are individually connected to the pelican battery box with waterproof 6-pin connectors. It's wired so that the VHF pulls/sends DSC info from/to the GPS.

I spent $167.92 total on the battery box. In addition I purchased these two units:

VHF: ICOM IC-M412 Class D (waterproof IPX 6 rating) -- $199.99
GPS: Raymarine A70d (waterproof IPX 7 rating) -- $899.99

If you want more info you can email me at bkils@mac.com.
-- Bjoern
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Old 01 June 2011, 18:55   #2
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That's a nice setup. How big a battery are you using as the peli case looks quite small? Is that a pull start, no PTT outboard?

Oh, and how did you vent the battery/case? If it's not vented, it's going to build up some nasty gases in there.
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Old 01 June 2011, 19:15   #3
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I have a case like that, it has a vent on it which lets air out, but not water in.. its designed as a secure laptop case and is meant to be able to be fully waterproof.... I havent tested it though!
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Old 01 June 2011, 19:18   #4
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Quote:
Originally Posted by Nos4r2 View Post
Oh, and how did you vent the battery/case? If it's not vented, it's going to build up some nasty gases in there.
Pelican cases have a slick little relieve valve in them. Way back when, this valve as basically a bolt with an O-ring. The new ones have a Gore-tex membrane in them that requires no adjustment, but keeps water vapour out. It should work both ways as pressure builds up.
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Old 01 June 2011, 19:55   #5
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Country: UK - England
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Boat name: WhiteNoise/Dominator
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Quote:
Originally Posted by Stoo View Post
Pelican cases have a slick little relieve valve in them. Way back when, this valve as basically a bolt with an O-ring. The new ones have a Gore-tex membrane in them that requires no adjustment, but keeps water vapour out. It should work both ways as pressure builds up.
So it'll clear Hydrogen by osmosis eventually? (actually, I guess it'd be quite quick-Hydrogen atoms are somewhat smaller than Oxygen or Nitrogen IIRC)
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Old 01 June 2011, 23:17   #6
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Country: USA
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Quote:
Originally Posted by Nos4r2 View Post
That's a nice setup. How big a battery are you using as the peli case looks quite small? Is that a pull start, no PTT outboard?

Oh, and how did you vent the battery/case? If it's not vented, it's going to build up some nasty gases in there.
Thanks! It's a 12V 7AH Sealed Lead Acid Battery. I keep the case open when charging and the pelican 1150 case does have a vent valve -- you can see it on the photo in between the two bulkhead connectors. As for the outboard, it's a 40HP pull start so there is no existing on-board battery. The battery powers the VHF and GPS w/ fishfinder for about 7 hours (standing by on CH16 without transmissions).

I created a detailed Excel parts list that I can email to anyone interested.
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