[ltp] T4x Battery Conditons Survey

[Eric Van Buggenhaut]

On Fri, Dec 16, 2005 at 03:53:03PM +0800, Kelvin KAN wrote:
> Now nearly 1 yr, in 38 charging cycles, the battery capacity of my T42 
> has dropped from 4700mAh (designed) to 4200mAh (fully charged).   
> Projecting this degradation into next yr, it will be practically giving 
> me only 2-hr running by next X'mas.
> 
> To be honest, I've been using the battery with great care and have 
> removed the battery while running on AC.  And 38 charge cycles in 1 yr 
> does NOT seem too frequent.
> 
> How's yours?  Really an IBM (not Lenovo) quality issue?

Same problem here. When I bought my T42 they claimed the battery to 
stand 5h. I never went beyond 3h (which is normal: 47000mAh/16000mW = 
~3).

After one year of intensive use (200 charges) always emptying the 
battery before charging, I get a max. capacity of 42000mAh just like 
you. I'm kind of disappointed by this aspect of the Thinkpads, 
probably the only weak point of this laptop.

Now, you should have a 1-year warranty, including the battery, just 
like I have (mine ends tomorrow hehe). One month ago, I called IBM 
customer service, I complained that the battery discharged really too 
quickly and they sent me a new battery without problem. Bonus: you 
keep the old battery if you want.

You might give it a try..


-- 
Eric VAN BUGGENHAUT
ericvb@debian.org