03-24-2013 10:49 AM
awesome! but how did you get v7.24? it's only at v6.40 on the support site, compatible with Win 7.
Not sure how, I think I must have used Lenovo Update, not sure where else it would have come from. It opens as Power Manager 7 on the startup splash screen.
03-24-2013 02:31 PM
Strange. How are you launching power manager? If I do a search for programs then "Power Manager" is not one of them. The only power software that relates to Lenovo that I have is via the Metro-based Lenovo "Settings". Just to re-state: my machine is a T530.
03-24-2013 06:38 PM
For the record, on mine there are no Lenovo .exes with "power" in their names.
However, the directory:
exists, and contains the following files:
43220 LOCAL SERVICE.PWM
03-24-2013 07:57 PM
the registry thing worked for me, but it is very impractical since it requires a reboot.
i for one really miss the power manager threshold settings as it was on windows 7 and previous generations.
Lenovo, please put the function back, even a simple one like in Yoga, the "best battery life" "best battery life span" switch will do.
03-24-2013 08:13 PM - edited 03-24-2013 08:22 PM
I don't know my way around Win 8 very well. However, I found the following file: PWMUI.EXE in
This file launches version 7 of Power Manager, which works fine on my Win 8, including setting custom charge threshholds. I upgraded from Win 7, it is possible this program was brought over from Win 7, or it was updated by Lenovo Update.
03-25-2013 02:30 AM
Thanks. I can confirm now that PWMUI.exe does not exist on my T530
I did try installing another machine's version of Power Manager on it but the first thing that happened is the fans went bonkers, so I tried to uninstall it. After that, all of the other power options stopped working and the battery was reported as missing or damaged. Lenovo support could do nothing, and eventually I had to reinstall ths OS from the backup partition Luckily it was right at the start of my use of the computer so I didn't lose more than a couple of hours of time.
03-25-2013 12:50 PM
That switch should exist under Windows 8 when you have the lenovo settings app installed. However, best for battery life span limits charge to 50% of the battery, so you run times will be reduced.
I think I understand the consensus request to provide similar power manager controls that we had under Windows 7 for Windows 8.
03-25-2013 03:21 PM
thanks Mark. There are also lots of other threads around these forums with the same consensus, e.g.:
03-26-2013 04:20 AM
Thanks for the links. I might try some of the possibilities raised by the other power manager thread and report back. I am a bit nervous, having baslled it up before, only now my machine is nicely set up and so a reinstall would cost me many hours!