Macbook (Pro) : 6-cell or 9-cell battery ?

Question

Level 2

245 points

Macbook (Pro) : 6-cell or 9-cell battery ?

I was looking around on Dell's site and found that they offer a choice between a 6-cell or a 9-cell battery on their notebook computer. Is Apple using 6- or 9-cell batteries for the Macbook (Pro) ? Why isn't Apple offering this choice ?

G4/800 QS - G3/400 Pismo PB, Mac OS X (10.3.9)

Posted on May 12, 2007 2:21 PM

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Answer 1

May 13, 2007 3:51 AM in response to Rincewind

The number of cells in a battery determine it's voltage since the cells are connected in series. The 15" MBP battery is a 10.8 volt battery according to the label on the battery. 10.8 volts divided by 9 yields 1.2 volts per cell which sounds right for a lithium ion cell. Perhaps the Dell is designed to run on a range of voltages. For longer life you would need physically larger cells not more of them.

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Answer 2

JASimon

Level 2

290 points

May 13, 2007 2:16 PM in response to Retired Engineer

The Dell '9-cell' batteries are larger - they stick out the front of the computer and are awkward (if you are charitable you can call them bonus wrist rests.)

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