{"id":3473,"date":"2010-12-14T01:32:15","date_gmt":"2010-12-14T09:32:15","guid":{"rendered":"http:\/\/www.krunk4ever.com\/blog\/?p=3473"},"modified":"2010-12-14T01:32:15","modified_gmt":"2010-12-14T09:32:15","slug":"cant-change-critical-battery-level-in-windows-7","status":"publish","type":"post","link":"https:\/\/www.krunk4ever.com\/blog\/2010\/12\/14\/cant-change-critical-battery-level-in-windows-7\/","title":{"rendered":"Can&#8217;t Change Critical Battery Level in Windows 7"},"content":{"rendered":"<p><img decoding=\"async\" loading=\"lazy\" class=\"alignleft size-medium wp-image-3474\" style=\"float: left; margin-left: 10px; margin-right: 10px;\" title=\"battery\" src=\"http:\/\/www.krunk4ever.com\/blog\/wp-content\/uploads\/2010\/12\/icon_battery1-300x214.jpg\" alt=\"battery\" width=\"300\" height=\"214\" srcset=\"https:\/\/www.krunk4ever.com\/blog\/wp-content\/uploads\/2010\/12\/icon_battery1-300x214.jpg 300w, https:\/\/www.krunk4ever.com\/blog\/wp-content\/uploads\/2010\/12\/icon_battery1.jpg 605w\" sizes=\"(max-width: 300px) 100vw, 300px\" \/> So with the heavy rainstorms we&#8217;ve been getting these pass few days, I&#8217;ve been having quite a few brown outs. Everything&#8217;s fine though since my computers are all backed by UPSes. However I do noticed that my HTPC always seems to hibernate whenever these brown outs occur. I checked the battery and it was at 99-100%. So I went into the power settings and noticed that the critical battery level action was set to hibernate and the critical battery level was set to 98%. I tried changing it to 10%, but the setting would revert back to 98% immediately after trying to apply changes.<\/p>\n<p>I did a search and found the following 2 threads:<\/p>\n<ul>\n<li><a href=\"http:\/\/social.technet.microsoft.com\/Forums\/en\/w7itproperf\/thread\/38a8c445-fd0b-41bc-8f98-d26bd0f4f90d\">Can&#8217;t change critical battery level &#8211; possible bug?<\/a><\/li>\n<li><a href=\"http:\/\/social.technet.microsoft.com\/Forums\/en-US\/w7itprogeneral\/thread\/ab5df6cf-a1ba-4086-bcd5-e0be496c02cc\">Cannot change Critical Battery level- stuck at 98%<\/a><\/li>\n<\/ul>\n<p>I tried to do what a few suggested such as changing my group policy for reserve battery notification, changing my permissions settings for power schemes in the registry, and a few others, but they all failed to work. The only thing that worked was running the <strong>powercfg.exe<\/strong> tool.<\/p>\n<p><code>powercfg.exe -setdcvalueindex 8c5e7fda-e8bf-4a96-9a85-a6e23a8c635c e73a048d-bf27-4f12-9731-8b2076e8891f 9a66d8d7-4ff7-4ef9-b5a2-5a326ca2a469 20<\/code><\/p>\n<p>The 2 things you need to change are <strong>8c5e7fda-e8bf-4a96-9a85-a6e23a8c635c<\/strong> (power scheme GUID) and <strong>20<\/strong> (what percentage to set it to). To locate your power scheme GUIDs, open registry editor (regedit.exe) and go to HKEY_LOCAL_MACHINE\\SYSTEM\\CurrentControlSet\\Control\\Power\\User\\PowerSchemes. The keys (i.e. folders) underneath that location are your GUIDs. I believe the GUID above is for the High Performance power scheme.<\/p>\n<p>Here&#8217;s the command to set the Balanced power scheme to have a critical battery level of 10%:<br \/>\n<code>powercfg.exe -setdcvalueindex 381b4222-f694-41f0-9685-ff5bb260df2e e73a048d-bf27-4f12-9731-8b2076e8891f 9a66d8d7-4ff7-4ef9-b5a2-5a326ca2a469 10<\/code><\/p>\n","protected":false},"excerpt":{"rendered":"<p>So with the heavy rainstorms we&#8217;ve been getting these pass few days, I&#8217;ve been having quite a few brown outs. Everything&#8217;s fine though since my computers are all backed by UPSes. However I do noticed that my HTPC always seems to hibernate whenever these brown outs occur. I checked the battery and it was at &hellip; <\/p>\n<p class=\"link-more\"><a href=\"https:\/\/www.krunk4ever.com\/blog\/2010\/12\/14\/cant-change-critical-battery-level-in-windows-7\/\" class=\"more-link\">Continue reading<span class=\"screen-reader-text\"> &#8220;Can&#8217;t Change Critical Battery Level in Windows 7&#8221;<\/span><\/a><\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":[],"categories":[12],"tags":[1020],"_links":{"self":[{"href":"https:\/\/www.krunk4ever.com\/blog\/wp-json\/wp\/v2\/posts\/3473"}],"collection":[{"href":"https:\/\/www.krunk4ever.com\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.krunk4ever.com\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.krunk4ever.com\/blog\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/www.krunk4ever.com\/blog\/wp-json\/wp\/v2\/comments?post=3473"}],"version-history":[{"count":0,"href":"https:\/\/www.krunk4ever.com\/blog\/wp-json\/wp\/v2\/posts\/3473\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.krunk4ever.com\/blog\/wp-json\/wp\/v2\/media?parent=3473"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.krunk4ever.com\/blog\/wp-json\/wp\/v2\/categories?post=3473"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.krunk4ever.com\/blog\/wp-json\/wp\/v2\/tags?post=3473"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}