How long dose a 9 cell battery last?

T4x series specific matters only
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ccookie66
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How long dose a 9 cell battery last?

#1 Post by ccookie66 » Mon Feb 28, 2011 8:07 am

Hello, my Thinkpad t40 battery right now last about 20 minutes. I'm not sure how many cells it has, but I want to buy a new 9 cell battery for it. How good is a 9 cell battery? How long dose it last? I don't really know much about batteries or the 3, 6, or 9 cell battery stuff. :??:
IBM ThinkPad T40
Windows 7 Home Premium SP1
1GB RAM
34.2GB HDD

Raceboy
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Re: How long dose a 9 cell battery last?

#2 Post by Raceboy » Mon Feb 28, 2011 9:12 am

On my 14,1 inch XGA T42 with Radeon 7500 and undervolted Dothan (1,86 GHz 750 running at 1,4 GHz max with 400 MHz FSB) my almost new Panasonic 9cell (worn 6%) holds around 6,5 hours with wireless on and screen brightness around half. Also this laptop has 5400 rpm HDD and no optical drive. Planning to swap R51 Intel GPU planar to reduce power consumption even more. If I could just find palmrest with no touchpad too....

Instead on my other T42 with 15" SXGA+ IPS FlexView and 2,0 GHz Dothan together with 7K60 the same battery holds around 4-4,5 hours.
X61s:L7500,4GB,128GB SSD,IPS
X32s:PM 758 LV CPU mod,2GB,64GB microSATA SSD,COM mod,IPS
701c,240,380,X60s,560X,570E,600/E,T20,T21,T30,TR451,T42p
Past:560/E/Z,600E,R30,T21,T23,T30,T40,TR451,T40p,T41,T41p,T42,T42p,T43,X20,X22,X23,X24,X31,X40,X41,X60/T,X61/s,X201,T60,T60p,T61,T400,T601p

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