mic_888 · Aug 31, 2010 at 09:44 am

Make Your Own Altoids Battery Supply

If you find that your mobile device is always running out of juice before the days end then take comfort in the fact that you can always make your own emergency battery pack.

All you need are a couple of AA batteries, a couple of capacitors, a couple of resistors, circuit, USB type A female jack, a diode, a soldering kit……ok so maybe it’s not that easy! XDA forum member hockeyrcks9901 decided to have a go and follow the instructions that are widely available on the internet.

The XDA member has tweaked his battery build slightly in that it maintains a constant 5V output even as the voltage drops on the batteries.  He states that it is possible to use rechargeable or alkaline batteries and apparently, it is also possible to add a third battery to further increase the capacity.

With two batteries, the set up can fit in the Altoids gum tin as per internet instructions, however the gum tin appears to be quite difficult to find and hence hockeyrcks9901 has used a regular Altoids tin. With the current set up, it is estimated that the batteries will give approximately 60-75% of a full charge.

For more information including pictures, check out the modification thread.


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mic_888

mic_888 is an editor on XDA-Developers, the largest community for Android users. I've been around XDA since 2007 when I bought the HTC Touch, well things have moved on a lot since then, and I've tried my hand at developing for WM and Android (still learning), but wanted to contribute more by becoming a News Writer for XDA. I write mainly Android articles, and some Windows Mobile. We're always sifting through the masses of threads for front page news, but do let me or the other guys know if you think anything is newsworthy including any breaking news! View mic_888's posts and articles here.
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