Ina a recent post I shared my impressions after a week with the 6430u.
Today I share the diary of my first day-long use tentatively on battery during a trip in the UK.

The summary is:
the 6-cell battery is unlikely to provide a full day of work, the total use time on battery in the 24h I had was: 44+78+97+9+39+38=305 minutes with a total of 91% battery (55 before recharge + 36 afterward)
Caveats:
1) the intermediate recharge makes the test not directly comparable with a run to depletion, but I need to work with the notebook, so I could not take the risk of running out of battery in the middle of an activity.
2) the use of the 3G key increases significantly the consumption compared to the most common tests, but is representative of a real mobile use. Phone tethering would have saved some notebook power at the expense of the battery charge of the phone.
3) the McAfee activity may not be representative of the standard usage pattern once the notebook break-in is over.

Here is the detail:
7.50 put to sleep, 100%, disconnected power
9.08 powered up, 97%, 3G USB key, no wi-fi
9.15 went to power saver mode (max 30% CPU frequency, minimum screen backlight) from balanced, no change in estimated life: 4h41′.
9.52 85%, 41 minutes of 3G connection for a total of about 30MB, estimated life 4h39′, sent to sleep.
11.36 powered up, 83%, disabled the keyboard backlight that was on at minimum level before, started a VMware image. Most of the chrome tabs were dead citing memory issues: according to performance monitor 1.5GB are available and a spool file does exist.
11.54 78%, sent to sleep, estimate 4h23′
14.02 powered on, powered on wi-fi, 75%
14.40 McAfee security endpoint running on the disk like crazy for a while, fan spinning
15.05 McAfee still going crazy, customer noticed the noise, 56%
15.32 McAfee still going crazy, 47%, 2h43′ left according to windows
15.39 plugged in power, 45%, set to high performance in an attempt to help the MacAffee processing.
17.04 McAfee craziness is over, I don’t know exactly when it stopped 99% charged
17.36 100% charged, disconnected power
17.45 put to sleep
18.56 powererd on, turned off wi-fi, 95%
19.35 put to sleep, 85%
23.57 powered on, 81%, turned on wi-fi
00.12 fan spinning like mad even with a simple browsing use (20 tabs in chrome), Skype and outlook in background
00.16 end of fan craziness, 76%
00.22 fan back in action for no apparent reason, I’ve reduced the number of tabs in chrome since the previous event, 74%
00.27: fan stopped
00.35, putting to sleep, 71%, estimated runtime 5h16′
8.45, turned pc on. It went to hibernate during the night (I should check the setting) and I was greeted by a message telling me that it was not able to save all the memory content. So the restore from hibernate did not work and I had to restart losing unsaved work (nothing in my case). Turned wi-fi off, 64%