[olpc-community-support] xo laptop Battery Issue

[Wavlngth]

Hi Richard,
I also replied to the forum so if you prefer to use the forum that's 
great.

This was my response:

  Here's a full report with with a few missing 10 second increments. I 
followed the instructions and here's what I get:
  1198396906,79,6669740,-390,2234,4679,Charging,Normal
  1198396916,79,6669130,130,2235,4679,Charging,Normal
  1198396927,79,6667910,130,2232,4679,Charging,Normal
  1198396937,79,6667910,-260,2234,4679,Charging,Normal
  ... ... ...
  "No Such Device Messages" (after I take out the batter)
  1198396997,79,6667910,-130,2234,4679,Charging,Normal
  1198397008,79,6669130,0,2246,4678,Charging,Normal
  1198397018,79,6670960,0,2252,4679,Charging,Normal
  1198397028,79,6668520,0,2257,4679,Charging,Normal
  1198397038,79,6670350,130,2258,4679,Charging,Normal
  1198397048,79,6669740,0,2258,4679,Charging,Normal

  Please let me know what all of this means.

  Thanks,
  Tim


On Dec 22, 2007, at 9:54 AM, Richard A. Smith wrote:

> Wavlngth wrote:
>> Hi Richard,
>> I'm having issues with my battery.  You were answering questions in 
>> the olpc forum and I'm hoping you can help.
>> When I received my xo laptop on Thursday I played around with it for 
>> about an hour.  When I shut down, I noticed my battery life was at 
>> 79%.  I don't recall what % it started at, however.  I shut the xo 
>> down and about 3 hours later I powered it back up.  After about 1 
>> minute of power, my xo laptop shut itself down.  Now my xo won't work 
>> without being plugged into the power outlet.  When the xo is plugged 
>> in and the battery is in, the battery life shows 79% and is 
>> illuminated orange.  Even after a full night of charge, it is still 
>> at 79% and orange.  If I unplug the xo while the battery is in and 
>> the xo is running, the xo shuts down.  So clearly either my battery 
>> is dead or my xo thinks it's dead or perhaps it's something else.  
>> Any ideas?  Your help is greatly appreciated.  Otherwise it's great.  
>> I'm trying to get familiar with this xo before I hand it off to my 6 
>> year old twins on Christmas day!
>
>
> First: Please don't send me mail directly without CC:ing the list. 
> Otherwise my answers will not make it into the archives.  I don't 
> scale well and the only way to prevent duplicates is making sure this 
> info is in the list archives and makes it into the FAQs.  --Thanks.
>
> ** Double check you used 'Reply To All' so the list stays in the loop.
>
> Ok, Now lets try to see what's up with your battery.  The laptop ships 
> with a utility called 'olpc-logbat' which will monitor some of the 
> battery parameters.
>
> Do the following:  Note the commands are inside the ' ' you don't type 
> the quotes.  <hit enter> means press the Enter key.
>
> Plug up your XO with the AC external power adapter.
>
> Boot sugar and startup the terminal app.  When you get to a prompt 
> that looks similar to this:
>
> [olpc at xo-0C-F0-8B ~]$
>
> type:
>
> 'su -' <hit enter>
>
> This will make you the root user.  your prompt should look something 
> like:
>
> -bash-3.2#
>
> Now type:
>
> 'olpc-logbat' <hit enter>
>
> Now the system is logging battery info every 10 seconds and writing it 
> to the terminal.  Each line consists of 6 numbers and 2 words all 
> seperated by commas like:
>
> 1198338121,32,69549120,1393359,2843,65311,Charging,Normal
>
> The key for these lines are:
> (each line corresponds to a column)
>
> date in seconds,
> charge %,
> Bat Voltage in uV,
> Bat Current in uA,
> Bat Temp,
> Bat charging status,
> Bay level status,
>
> I'm interested in what is happening with the 2nd, 3rd, 4th numbers.
>
> Now while olpc-logbat is running please remove the battery and wait 10 
> seconds for a sample.  You should see a lot of stuff about "No such 
> device"  This is normal.  Now plug the battery back in and watch what 
> happens with the 2nd, 3rd, and 4th numbers.  In particular whats going 
> on with the 4th number as thats the battery charge current.
>
> olpc-logbat will store all this info into a new logfile every time you 
> run the script.  This file is stored in the /root directory and is 
> called:
>
> log-<usernickname>-<date>-<time>.csv
>
> If you know how to mount a usb disk manually (or you have your XO 
> networked) then you can copy that file on to the disk and send it to 
> me.  But just watching what the numbers are doing and reporting that 
> back will work as well.
>
> -- 
> Richard Smith  <richard at laptop.org>
> One Laptop Per Child
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