Portable 12 volt power packs - DIY???

Submitted: Sunday, Jun 14, 2009 at 21:49
ThreadID: 69823 Views:22342 Replies:11 FollowUps:9
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Hi All,

Hot on the heels of finishing the successful 9kg gas cylinder/air compressor project, I'm looking into purchasing one of these power packs for use while camping. It might be a viable alternative to modifying the camper, mainly because it's portable.

I've been looking at a Thumper 75 A/H job, but at $700+ it's a bit a rich.

Question is; how difficult would it be to build one?

I've found a 75 A/H SLA (designed for golf buggies, etc) for around $275. Add extra for lighter sockets, plugs, fuses and perhaps a voltmeter, it still comes in cheaper than a 'bought' one.

I've checked a few old threads from this site, but without much luck.

Anyone built one before?

Photos, CCT diagrams??

Any help appreciated!

Cheers, Matt
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