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Old 12-25-2009, 02:20 AM   #18 (permalink)
jjackstone
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Join Date: Jan 2008
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MetroMPG,
The lithiums in laptops are probably different chemistry than the ones from B&D(haven't checked for sure). B&D may be using the A123 lithium iron phosphate that are being used in the 36V Dewalt cordless tools. If so, they have a max voltage of 3.6 V/cell and operate near 3.2v/cell. The batteries from the laptops probably are some variation of lipo that have a max voltage of 4.2V and operate around 3.6v/cell. Careful mixing them.
BTW, I use the Dewalt packs to run my ebike. I use the lipo's to power the LED headlights and rear lamps on my tadpole trike.
JJ
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