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PostPosted: Sun May 05, 2013 5:19 pm 
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Site Rank - Deck Hand

Joined: Fri Feb 01, 2013 12:30 pm
Posts: 6
This is likely going to be overkill for most people but I like nice stuff, more importantly equipment that allows for quick hassle free setup and teardown. This battery box was constructed for use in a 2013 Hobie Mirage Oasis tandem kayak. A Yuasa 12V, 7Ah SLA battery will be powering a Lowrance Elite-4 Gold fishfinder/ chartplotter which draws ~250mA @13.5V. This should easily power the Elite-4 unit for an entire day of fishing. The Pelican case is secured under the front seat with 1/4” diameter shock cord looped around the seat scuppers. This mounting arrangement prevents unnecessary holes, allows for quick setup/ removal and keeps the weight forward for solo use.

Hope this information helps in the design and construction of your own kayak battery box.

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Bill of materials:
Pelican 1120 case with foam
Littelfuse MINI inline fuse holder - (PN: 01530002H) - Digi-Key
Bulgin 400 Series Buccaneer plug - (PN: PX0410/02P/5560) - Digi-Key
Bulgin 400 Series Buccaneer female contacts - (PN: SA3350/1) - Digi-Key
Bulgin 400 Series Buccaneer plug cap - (PN: PX0481) - Digi-Key
Bulgin 400 Series Buccaneer inline socket - (PN: PX0411/02S/5560) - Digi-Key
Bulgin 400 Series Buccaneer male contacts - (PN: SA3349/1) - Digi-Key
Bulgin 400 Series Buccaneer inline socket cap - (PN: PX0480/1) - Digi-Key
Bud Industries PG-7 cable gland - (PN: NG-9511) - Digi-Key
18ga, 2 conductor, red/black zip cord - Powerwerx
3A MINI blade fuse
12V 7Ah SLA battery - (PN: Yuasa NP7-12) - JMAC
Battery Tender 800 12V charger
1/4” diameter shock cord - Austin Kayak
Bungee buttons - Austin Kayak
Miscellaneous hardware


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PostPosted: Sun May 05, 2013 5:28 pm 
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Site Rank - Deck Hand

Joined: Fri Feb 01, 2013 12:30 pm
Posts: 6
The cart scupper insert was unscrewed and trimmed ~1" to allow the Lowrance tranducer to sit further down into the hole. I trimmed the Lowrance transducer mount offset so the transducer would be centered with the recess in the hull.

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Bill of materials:
Lowrance Elite-4 Fishfinder/Chartplotter
Lowrance Elite-4 Cover
Lowrance Transducer Kayak Scupper Mount
RAM 1” Ball Quick Release Adapter for Lowrance Elite-4 - (PN: RAM-B-202U-LO11)
RAM 1” Medium Arm B-Socket - (PN: RAP-B-201U)
YakAttack GearTrac - (PN: GT175-04)
YakAttack FullBack - (PN: FB-GT175)
YakAttack 1” Screwball - (PN: SB1)
Hobie Thru Hull Wiring Kit - (PN: 86505621)
3M 5200 Marine Sealant
Miscellaneous rubber caps for plugs and sockets and hardware


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PostPosted: Sun May 05, 2013 5:35 pm 
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Site Rank - Deck Hand

Joined: Fri Feb 01, 2013 12:30 pm
Posts: 6
This has worked out to be a really clean install. I can remove the Lowrance head unit, the RAM ball, nothing is left on the deck/ gunwale and the cable tucks into the mesh pocket. No issues or noise with the transducer placed behind the rear drive, it has a clean signal while pedaling. I have use of the temp sensor with the transducer being in the water and with a little bit of care I have not scraped or damaged the transducer to date.

Hope this info helps with your rigging...

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PostPosted: Wed May 08, 2013 8:35 am 
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Site Rank - Old Salt

Joined: Mon Jul 16, 2012 9:27 pm
Posts: 399
Thats a nice install!
Perhaps on my next kayak or the next time I re-rig this one I will try that Transducer mount.


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