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jjackstone · 12-25-2009, 02:20 AM

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

12-25-2009, 02:20 AM	#18 (permalink)
jjackstone Master EcoModder Join Date: Jan 2008 Location: Sacramento, CA Posts: 404 Thanks: 35 Thanked 143 Times in 105 Posts	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