If, for example, you've set Low battery at 6% & Critical battery at 3% [the lowest mine accepts], you could set Reserve battery at 4% so that it acts as a last ditch warning to connect to power before the Citical battery action takes place without any further warning.
[* Reserve battery level is not associated with any action other than bringing up a warning dialog - "Critical battery warning. Your battery is very low (4%), please plug in immediately.
On my Lenovo Y410 model laptop I've installed Windows7. In XP I used to get low batter notification when my battery reaches 10% life.
In Windows 7 I've even set the low batter notification on, but still it doesn't notify me when battery reaches 10% life and when it reaches critical level 5% it automatically hibernates. Can anybody tell me the reason why it is not notifying me when it reaches low batter level? Low batter notification is on and low battery level is 10%. UPDATE: During googling the problem, I kept my laptop running on battery and I was observing the battery level every minute.
The problem is even more prevalent on systems with autologon.
The most frequently affected icons seem to be the speaker icon (sound volume) and the power/energy icon.
An earlier hypothesis, that is loaded too late, has been refuted by Thomas Gregory Platt (see his email below).
In Vista, if the Clock, Network, Volume and Power icons have disappeared and when you go into properties on the taskbar and look at "System Icons" under the "Notification Area" tab, Volume, Network, and Power are greyed out, then visit Paul's Forum and run his fixing program. reminds us that, if other icons disappear for good and never reappear, we should check first whether the programs are started at all.In this case the main solutions below will not work. There are a few other problems that can cause similar behavior and can mislead you into believing that they are the same problem.If you are not sure, read the entire article first, because a few more are described later.About the weirdest and totally wrong recommendation I have seen was to switch off your computer and let it sit without power for three hours. The web has a lot of snake oil, particularly in relation to the problem of the disappearing systray icons.Then there is the fact that some change solves the problem, just by changing the boot and logon process sequence or timing a little bit.