Maximum battery on T410 (Tiny Image)

[dr_st]

3+ years ago I posted this on my new T60 with an almost new 9cell battery:
http://forum.thinkpads.com/viewtopic.php?f=29&t=45600

Having got my new T410 just yesterday, I decided to check again for the largest number that can appear in the power manager gauge, under the following fairness conditions:

* LCD must be on
* Measurement must be accurate over a period of at least 30 seconds (no tricks such as "just came out of standby and displays 48:00 remaining").

The machine:

Code: Select all

ThinkPad T410 2537-R46
i5-540M(2.53GHz), 4GB RAM, 160GB Solid State Drive, 14.1in 1440x900 LCD, Intel 5700MHD, Intel 802.11agn wireless, WWAN option, Bluetooth, Modem, 1Gb Ethernet, UltraNav, Secure Chip, Camera, 9c Li-Ion, Win7 Pro 64

The settings:
All wireless radios off, straight after boot, all non-vital processes stopped, 100% idle.

Screen brightness on lowest setting (image visible, but computer virtually unusable):


Screen brightness on second lowest setting (usable):

[Navck]

Warning: WXGA+ resolution.
http://img708.imageshack.us/img708/2765/officef.jpg
http://img27.imageshack.us/img27/7721/dataexpunged.jpg
http://img221.imageshack.us/img221/6610/buffera.jpg

Some random shots from a while back when I was using my T410. Conditions varying but generally had the wireless running and screen brightness would not of exceeded 7/15 (Indoors, moderate lighting) to 10/15 (Indoors, overly lit rooms). Probably would be around 0-4/15 practically. None of these shots are from idle states.

I find 0/15 to be perfectly usable indoors when I don't want people to see my screen while I write something in Word or browse forums with high contrast (Black and white) color schemes.

Personal machine is a T410 2516-CTO
i7-620m, 2x2GB RAM, 7k500-320, 14.1" WXGA+, NVS3100m, Intel 6300 WLAN, Gobi 2000 module, Bluetooth, FPR, camera, 9 cell, Win7-32 Ultimate.

[ThinkRob]

Those are some pretty incredible numbers, Navck.

I've got a Core i5-based T410 with a 6-cell, and it gets about 3 hours of run-time under normal usage (occasional wireless activity, iwlagn drive power-saving at max, Java development under Eclipse.) Either there's a big difference between the 9 and 6 cells, or something odd is going on...

[dr_st]

The 9-cell has about 66% more capacity than a 6-cell (not 50% as one would believe).

The 6-cell on my T410 shows about 4-4 and a half hours remaining when at 95%, on medium-high screen brightness.

[penartur]

I've got a Core i5-based T410 with a 6-cell, and it gets about 3 hours of run-time under normal usage (occasional wireless activity, iwlagn drive power-saving at max, Java development under Eclipse.)

Eclipse sometime suddenly starts to consume all available CPU, so maybe your CPU is running at its maximum speed?

[ThinkRob]

Eclipse sometime suddenly starts to consume all available CPU, so maybe your CPU is running at its maximum speed?

Nope. I run conky with a CPU histogram, so I tend to notice things like that (and kill the offending processes.)

I've only ever seen Eclipse peg a core when doing a full build of a project (which, given the size of the project that I work on, I *really* try to avoid doing.) Usually it's pretty light on CPU, but heavy on memory as one would expect.