[Bug 811777] Re: Battery meter design needs to make both percentage and time statistics easily accessible.
Fix committed into lp:indicator-power at revision None, scheduled for release in indicator-power, milestone Unknown ** Changed in: indicator-power Status: In Progress = Fix Committed -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/811777 Title: Battery meter design needs to make both percentage and time statistics easily accessible. To manage notifications about this bug go to: https://bugs.launchpad.net/indicator-power/+bug/811777/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 811777] Re: Battery meter design needs to make both percentage and time statistics easily accessible.
** Branch linked: lp:ubuntu/saucy-proposed/indicator-power -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/811777 Title: Battery meter design needs to make both percentage and time statistics easily accessible. To manage notifications about this bug go to: https://bugs.launchpad.net/indicator-power/+bug/811777/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 811777] Re: Battery meter design needs to make both percentage and time statistics easily accessible.
** Changed in: indicator-power Status: Fix Committed = Fix Released ** Changed in: indicator-power (Ubuntu) Status: In Progress = Fix Released -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/811777 Title: Battery meter design needs to make both percentage and time statistics easily accessible. To manage notifications about this bug go to: https://bugs.launchpad.net/indicator-power/+bug/811777/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 811777] Re: Battery meter design needs to make both percentage and time statistics easily accessible.
There is also a related bug 884038 to get back support for opening the remaining battery time in the OSD with Fn+F2. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/811777 Title: Battery meter design needs to make both percentage and time statistics easily accessible. To manage notifications about this bug go to: https://bugs.launchpad.net/indicator-power/+bug/811777/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 811777] Re: Battery meter design needs to make both percentage and time statistics easily accessible.
** Changed in: indicator-power Assignee: (unassigned) = Haw Loeung (hloeung) ** Changed in: indicator-power (Ubuntu) Assignee: (unassigned) = Haw Loeung (hloeung) ** Changed in: indicator-power Status: Confirmed = In Progress ** Changed in: indicator-power (Ubuntu) Status: Triaged = In Progress -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/811777 Title: Battery meter design needs to make both percentage and time statistics easily accessible. To manage notifications about this bug go to: https://bugs.launchpad.net/indicator-power/+bug/811777/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 811777] Re: Battery meter design needs to make both percentage and time statistics easily accessible.
** Branch linked: lp:~charlesk/indicator-power/lp-811777 -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/811777 Title: Battery meter design needs to make both percentage and time statistics easily accessible. To manage notifications about this bug go to: https://bugs.launchpad.net/indicator-power/+bug/811777/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 811777] Re: Battery meter design needs to make both percentage and time statistics easily accessible.
I just reported bug #1029339 (Battery time remaining fluctuates wildly, despite charge declining predictably) which is directly related to this bug and mpt's comments in comment 7. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/811777 Title: Battery meter design needs to make both percentage and time statistics easily accessible. To manage notifications about this bug go to: https://bugs.launchpad.net/ayatana-design/+bug/811777/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 811777] Re: Battery meter design needs to make both percentage and time statistics easily accessible.
First of all, thanks for the hack Leonardo. Worked perfectly for me. I typically use my laptop on battery power for simple scientific calculations, using it mostly as a desk calculator; however, I do run into times when I need to run more demanding programs, which require higher cpu loads to solve differential equations. The normal light load during simple calculations causes an artificially extended battery life to be reported, since the sudden increase in load from the more demanding program will consume power at a faster rate. I typically solve this by looking at the battery percentage, to see if I've got enough juice left to execute the calculation. Although I don't think it should be classified as a bug, it would be nice to have an officially supported way to show battery percentage as opposed to time remaining next to the battery icon. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/811777 Title: Battery meter design needs to make both percentage and time statistics easily accessible. To manage notifications about this bug go to: https://bugs.launchpad.net/ayatana-design/+bug/811777/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 811777] Re: Battery meter design needs to make both percentage and time statistics easily accessible.
** Changed in: ayatana-design Importance: Undecided = Medium -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/811777 Title: Battery meter design needs to make both percentage and time statistics easily accessible. To manage notifications about this bug go to: https://bugs.launchpad.net/ayatana-design/+bug/811777/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 811777] Re: Battery meter design needs to make both percentage and time statistics easily accessible.
** Changed in: ayatana-design Status: Incomplete = New ** Changed in: ayatana-design Assignee: (unassigned) = Matthew Paul Thomas (mpt) -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/811777 Title: Battery meter design needs to make both percentage and time statistics easily accessible. To manage notifications about this bug go to: https://bugs.launchpad.net/ayatana-design/+bug/811777/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 811777] Re: Battery meter design needs to make both percentage and time statistics easily accessible.
Matty Lamb, thanks for those reasons. I don't understand the relevance of percent remaining is more precise and accurate, if people are just going to use that percentage to inaccurately calculate time remaining anyway. And some users prefer percent remaining is assuming the question; it's not our job to make it easy for people to mislead themselves. However, your other points are interesting: Batteries have to be stored at the proper charge level and To maintain battery health, it is necessary to start charging the battery at a particular percentage. Do you have references that either or both of those do help battery life? If so, we could help people achieve those goals somehow. Maybe by showing the percentage in the menu. Or maybe by something smarter, such as giving people the option to run down the battery to the ideal level when they switch off the computer. Or maybe both. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/811777 Title: Battery meter design needs to make both percentage and time statistics easily accessible. To manage notifications about this bug go to: https://bugs.launchpad.net/ayatana-design/+bug/811777/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 811777] Re: Battery meter design needs to make both percentage and time statistics easily accessible.
First, I still think there is a good argument for percentage as a useful statistic because your time remaining is a function of what you're using your computer for (gaming/video editing/flash vs word processing), while the percentage is not. Granted, users are going to make very rough estimates, but eh. As I said in my prior post, I think that both statistics are more useful when you can access both of them. From what I've gathered, the most important factor in maintaining battery health is temperature. High temperature = bad. Kind of hard to fix in software though. This table summarizes a bunch of does and don'ts. Almost all laptop batteries these days are Lithium Ion batteries. http://batteryuniversity.com/learn/article/do_and_dont_battery_table When you store a battery, it unavoidably loses some capacity (not charge--capacity, ie, your battery used to store 1000 mAh, now only stores 800 mAh overall effect is that your 100% charged battery doesn't last as long). You can reduce this effect by storing batteries at about 40% discharge (ie, charge to 100%, discharge to 40%, store). This table compares battery storage at 100% and at 40%: http://batteryuniversity.com/learn/article/how_to_store_batteries Also here is a nice picture illustrating capacity loss: http://batteryuniversity.com/learn/article/capacity_loss Old batteries like Nickle Cadnium had a memory effect where the battery would forget how much capacity it actually had unless you fully dischared it and then fully recharged it. Lithium Ion batteries DO NOT have this behavior, and it is generally better for the battery to AVOID a full discharge. This is because repeated partial discharges of the battery increase the total number of charge cycles. Practically speaking this means you want to start charging the battery when it's at 20-30% instead of at zero. This page has a table summarizing the result: http://batteryuniversity.com/learn/article/how_to_prolong_lithium_based_batteries The references I've used here are from batteryuniviersity.com because their site has nice sections and I can link you to specific things. Here are some more sources that give good overviews of how to maximize battery life: http://www.mpoweruk.com/life.htm (this goes into some of the chemistry of batteries) http://forum.notebookreview.com/hardware-components-aftermarket-upgrades/91846-notebook-battery-guide.html#post1696318 (A good practical guide, though he recommends monthly full discharges to calibrate the battery which is not good practice with lithium ion batteries) http://en.wikipedia.org/wiki/Lithium-ion_battery#Prolonging_battery_pack_life (of course Wikipedia has something to say) I hope this is helpful. Have a nice day. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/811777 Title: Battery meter design needs to make both percentage and time statistics easily accessible. To manage notifications about this bug go to: https://bugs.launchpad.net/ayatana-design/+bug/811777/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 811777] Re: Battery meter design needs to make both percentage and time statistics easily accessible.
For those who prefer percentage, i made a PPA with a little hack to show percentage instead time remaining: https://launchpad.net/~leonardobsp/+archive/indicator-upower-percentage I hope you like. :) -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/811777 Title: Battery meter design needs to make both percentage and time statistics easily accessible. To manage notifications about this bug go to: https://bugs.launchpad.net/ayatana-design/+bug/811777/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 811777] Re: Battery meter design needs to make both percentage and time statistics easily accessible.
There are good points for both sides. There are people that likes percentage, others prefer seeing the time remaining, so why not make easy to choose whichever the user want? I mean, is that hard to make it possible? -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/811777 Title: Battery meter design needs to make both percentage and time statistics easily accessible. To manage notifications about this bug go to: https://bugs.launchpad.net/ayatana-design/+bug/811777/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
