Why a 3-wire battery?

My IPT has a 3.7V lithium-ion polymer battery with a red, a white and a black wire soldered to it. What is the 3rd wire for? When measured there are 3.5V between both red-white and red-black but 0.0V between white-black.

TIA

12.PB. (Rev A). &15" MBP. iPod Touch., Mac OS X (10.4.11)

Posted on Sep 2, 2008 1:12 PM

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Why a 3-wire battery?

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