I believe* I have finished tweaking this machine to get it to use the least possible power. On Battery in power manager it idles right at 5w. Obviously this increases with usage. Figured this thread could be a compilation of things people are doing to reduce their power usage. Share tweaks and help others. For me, this is what I've found to give the best battery life. In Rig i5-2520 Intel 310 80gb 320gb 7200 hdd 4gb RAM IPS W7 64 Pro Whittled down factory image. Clean install actually did idle almost a watt higher. Vinuneuro kept telling me that, but I didn't want to believe! You can whittle down the factory install to pretty much the same as a clean install anyways. I just did a factory install then went through and gutted it with YourUninstaller. Came out to be almost the exact same size as my clean install. My Drivers I personally try to keep things as minimal as possible. Bios 1.16 Hotkey 3.52.0000 Intel Chipset 126.96.36.1990 Audio 188.8.131.52 Power Management Driver 1.62 Power Manager 3.61 Intel HD Graphics 184.108.40.2062 (Intel 2361 increases power draw - higher brightness) Intel PRO 1000 Lan 220.127.116.11 Monitor 4.36 Integrated Camera 18.104.22.1687 UltraNav Driver 22.214.171.124 ThinkVantage Fingerprint Software 126.96.36.19982 Ricoh Multi Card Reader 2.14.18.01 Intel Centrino 6205 14.00.1000 In Bios I just disabled stuff I don't use or have on my rig like bluetooth. I didn't find any advantage power wise to disabling the other stuff. I thought there would be frankly, but nothing changed. Ethernet - Enab Wireless - Enab (I disable it in Network Connections. If I disable in bios my watt usage increases by 1w) Wimax - Disa WWAN - Disa Bluetooth - Disa USB Port - Enab Ultra/HDD - Enab Microphone - Enab Expresscard - Enab Card Slot - Enab Camera - Enab Fingerprint - Disa In Power Manager All default settings. Oddly enough I saw an increase in power draw if I edited any of the settings. Weird... I'm still testing that to find out exactly what is causing the increase after change. I'd like to edit the profiles to my exact specs. MSConfig Under services after hiding all microsoft services I have four things with checks. ThinkPad PM Service Lenovo Auto Scroll Lenovo Hotkey Client Loader On Screen Display Under startup the only thing checked is ThinkPad Power Manager. Services Once I hit the desktop after boot I have 38 processes running. I pretty much used Black Vipers guide with a few changes to my personal situation. Some have said Windows 7 services make no difference on power draw... well I've found on my machine that isn't true. I dropped about a half watt by disabling services, which is a big difference in battery life. I believe that is about it as far as battery life goes. I've probably forgotten something, but I will add to it if needed.