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Diy USB battery pack?

post #1 of 4
Thread Starter 
Just getting round to this to make my own USB charged boot heaters but I have lost the original link to make them!
I originally bought some empty battery packs and the idea was to install 3AA batteries to power the 5V.
However these packs are too long for AA batteries! Any ideas what I can do to hack this?

post #2 of 4

3 AA batteries will run your boot heaters for about 10 minutes.  Think again.

post #3 of 4

What about something like this:

 

http://www.amazon.com/dp/B017CUMANU?psc=1

post #4 of 4


10000 mAH, that's in the ballpark.

I use these when it's really cold with a homemade controller for a vest that draws more than boot heaters.

30000 mAH capacity.

http://www.epicski.com/t/131568/ok-im-a-pussy-cold-and-electricity

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