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• 07/16/09
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Thursday, July 16th, 2009
Hi all,
 
Neil said that there were at least 3 people interested in the battery systems that I built.  So, here are the pictures and the details.
 
I bought at Costco the 115amp deep cycle batteries.
 
One of the hardest things was to find a cooler with the proper size for the battery.  The benefit of a cooler is that if the battery spills, the fluid will stay inside, the vapors will have a harder time going out, and for transportation, it is easier to stack stuff on top of the batteries.  I found these cooler for $14 at Walmar (after a lot of trips to a lot of place).  The handles are a bit flimsy but they seem to hold up OK.  These coolers are 28 quarts coolers.  They are very easy to cut with a working knife.

I got an external 12V switch.  Initially, I bought it at Radioshack but I found them to have a very loosy/goosy contacts and they could easily failed in the middle of a exposure.  So, I visited Parkrose Hardware and I bough the solid ones you see in the picture.  I don't remember the price but they were a few dollars.
 
The cigarette lighter adapter is from Fry's Electronics, I cut the ends, and I use some wire joints so I could tie them to the switch and the battery.  I believe the cigarette adapters were a few dollars too, nothing expensive but I found the quality from the Fry's Electronic ones to be superior than the ones from Harbor Freight.
 
The battery voltage indicator is from Harbor Freight.  It was unexpensive too, I believe it was around $6.
 
I used a drill to make an initial hole, and then a cutting working knife to make the holes to a specific size.  They were easy to cut a brand new blade. I made the holes tight and I used superglue for added strength.
 
One battery system is for the laptop and the other one for the mount, cameras, etc.
 
 
Enjoy them!
 
M.


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Comments:
On 07/17/09 at 07:57am Miquel wrote:
Thanks Barry!!! :). 17 on the way... :)

The most difficult thing was finding the right components price-quality-wise. I spent quite a lot of time in the car driving up and down but it paid in the end.

M.

On 07/17/09 at 01:31am Barry wrote:
Nice. I'll take 17 of them.....need them by Friday.

Seriously, a very elegant solution! Good work.





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