I made this box for one of my kayaks, for some of the accessories I’ll have with me during longer trips. Most of 12V readily available batteries are lead acid – read: heavy and expensive. Even basic 12V lead acid batteries are not really something I’d consider cheap, about £25 at least and then you have the cost of waterproof container and other bits.
For this particular box I used lockable food container with some Sub-C cells for battery pack. I also added a voltmeter to be able to monitor the charge of the battery pack (I will be adding small solar panel to the set up eventually to keep everything happy on longer trips). I made mistake and used 2-part epoxy glue instead of silicone sealant, which is more flexible and thus more suitable for this application.
Here’s my shopping list:
Lockable food container (75p on sale in Poundland)
Sub-C cells 2500mAh (I bought 20, for 2 boxes, 10 per box)
http://www.ebay.co.uk/itm/20-BU-NiCd-SubC-Sub-C-2500mAh-Rechargeable-Battery-Tab-/151675714331?
Small voltmeter to check the battery voltage
http://www.ebay.co.uk/itm/331519358794?_trksid=p2060353.m2749.l2649&var=540684194054&ssPageName=STRK%3AMEBIDX%3AIT
Waterproof connectors
http://www.amazon.co.uk/gp/product/B00JVJ4CPU?psc=1&redirect=true&ref_=oh_aui_detailpage_o02_s00
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Music by: The Freak Fandango Orchestra
Track: Balkan Beats
You can find it here:
http://www.freakfandango.es/#music
Post time: Jan-09-2017