I&#39;m looking to verify the manufacturer&#39;s claimed capacity of various USB battery packs in mAh.<div><br></div><div>For instance, these:</div><div><a href="http://www.amazon.com/Zagg-ZAGGSPARQ-ZAGGsparq-Portable-Battery/dp/B00343D2NC/ref=sr_1_1?ie=UTF8&amp;qid=1320088722&amp;sr=8-1">http://www.amazon.com/Zagg-ZAGGSPARQ-ZAGGsparq-Portable-Battery/dp/B00343D2NC/ref=sr_1_1?ie=UTF8&amp;qid=1320088722&amp;sr=8-1</a></div>

<div><a href="http://www.amazon.com/New-Trent-iDual-Port-IMP50D-Blackberry/dp/B003690Q42/ref=sr_1_1?ie=UTF8&amp;qid=1320088707&amp;sr=8-1">http://www.amazon.com/New-Trent-iDual-Port-IMP50D-Blackberry/dp/B003690Q42/ref=sr_1_1?ie=UTF8&amp;qid=1320088707&amp;sr=8-1</a></div>

<div><a href="http://www.monoprice.com/products/product.asp?c_id=108&amp;cp_id=10833&amp;cs_id=1083110&amp;p_id=6915&amp;seq=1&amp;format=2">http://www.monoprice.com/products/product.asp?c_id=108&amp;cp_id=10833&amp;cs_id=1083110&amp;p_id=6915&amp;seq=1&amp;format=2</a></div>

<div><br></div><div>Plus some others.</div><div><br></div><div>This looks like it&#39;ll do the job:</div><div><a href="http://www.westmountainradio.com/cba.php">http://www.westmountainradio.com/cba.php</a></div><div><br>

</div><div>But I figured I&#39;d ask if anyone has one I can use before I drop a couple hundred bucks.</div><div><br></div><div><br></div><div>Best,</div><div>Reed</div>