gurucubano Troubleshooter

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  • FreeBSD:$ while true; do batteryLive=`/sbin/sysctl -n hw.acpi.battery.life` echo `date` ': ' ${batteryLive 'percent' sleep 60 done Wed May 22 15:19:18 CEST 2019 : 100 percent Wed May 22 15:20:18 CEST 2019 : 100 percent Wed May 22 15:21:18 CEST 2019 : 99 percent Wed May 22 15:22:18 CEST 2019 : 99 percent Wed May 22 15:23:18…
  • My Acer C720 does not run Windows, lucky I am. Didn't I said this somewhere in this thread? I have no Windows in all in my house. Only Linux and FreeBSD, even on the four smartphones in my family Ubuntu is installed.
  • I have here a chart picture of the battery discharging (the gap near second 18000 is due to not have written down data):
  • ¡Obrigado!
  • The original old one has 11.25V output, all others have 11.41V. Any concern or is in the limits of tolerance?
  • I bought another one and installed it on the weekend. Remarks: * When I installed the new battery, it was empty, no LED turned on. The Acer C720 did not start without attaching power supply. * The battery charged to 100% in around three hours while using the laptop * After this I removed the power and let it drain under…
  • No. The dealer does not respond and has an invalid postal addr in Germany I claimed and got back the 50 euro from Visa. I will buy another one.
  • I did so. When it was down (after consuming all energy of the battery), I plugged in the power, rebooted and now it charges only up to 75% and the LED turns from amber to blue. I know this already, in the following days of usage this percentage of this "LED=blue full point" will go up day by day around 1%, i.e. tomorrow…
  • Can you please give an exact procedure to do it manually? Like:* switch it off * charge until full (how I do know that it is charged fully?) * switch it on without power supply * let it consume all energy until it goes off The problem is in (2). Well, I did this already more than once. It charges only until ~80%
  • Does this tool power-calibrate(8) from Ubuntu does anything with the battery itself and will it after reboot to FreeBSD have the battery fixed or does it only fix the "impression" in the Ubuntu kernel about the capacity of the battery? If not, it's useless for me, because I use my Acer C720 with FreeBSD. In any case, I…
  • How should I calibrtate it? I have only Ubuntu or FreeBSD on this Acer C720, no Windows, no ChromeOS, and no hole in the bottom case as someone suggested :-)
  • I booted the Acer C720 yesterday from an external USB disk with an Ubuntu 18.04. The tools there show the same values:…
  • Also videos about battery replacements like this https://www.youtube.com/watch?v=hyQNHqQh6gw , do not mention any additional switch or hole to press.
  • This page https://sites.google.com/a/chromium.org/dev/chromium-os/developer-information-for-chrome-os-devices/acer-c720-chromebook has a view from below in an open Acer C720. Maybe you're talking about the switch with the number 5. I will open the device and will have a loook what kind of switch this is...
  • The is no hole in the back of the Acer C720, see the foto below. The device was running ChromeOS when it came from Acer, but is today running FreeBSD and Ubuntu.
  • You guide looks like for Windows (my Acer C720 does not run Windows) and your photo from its bottom part does not look like an Acer C720.
  • I booted the C720 without power supply attached, it showed 100%, and I let it drain until power-off. Then I plugged-in power and it charged only until 76%. Anything else I should have done or do?
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