Fwd: low battery shutdown

Mike Dee mikedee4 at gmail.com
Mon Feb 22 09:30:15 EST 2016

---------- Forwarded message ----------
From: Mike Dee <mikedee4 at gmail.com>
Date: Mon, Feb 22, 2016 at 6:22 AM
Subject: Re: low battery shutdown
To: peter at easthope.ca

You might need "batman".


Start here

*First, take a quick look at the battery, especially the black connector
which contains the contacts that electrically connect the battery to the
laptop.* Dried green crystals have been spotted around the connector on
non-functional batteries on some occasions. This is from decomposition of
the contact metal due to electrolysis in water. This may be cleaned with
baking soda mixed with water, using a toothbrush. Wash your hands well
afterwards. This may recover the battery, unless the contacts have become
badly corroded.

*Perform an XO Full Reset <http://wiki.laptop.org/go/XO_Full_Reset>.* If
you know the problem is localised within a battery, this is unlikely to
make any difference. Nevertheless, lets do it now to be sure.

*Disconnect the battery, and connect the laptop to AC power*. Now turn on
the laptop. After the system has loaded, insert the battery.

*Does the battery LED start flashing red?* If so, jump to #Battery LED is
flashing red

*Does the battery LED start flashing yellow?* If so, see #Battery LED is
flashing yellow
*For more information on the battery LED, see [2]

*Is there no apparent response in the battery LED?* See #Battery detection

Now fully charge the battery, and wait for the battery LED to go green. Now
disconnect AC power and discharge the battery while the system is running,
keeping an eye on the percentage charge.

*Does the system shut down abruptly with over 10% of charge remaining?* If
so, see #Laptop shuts down abruptly with significant charge remaining

Now, starting with the battery completely discharged, perform a #Capacity
test <http://wiki.laptop.org/go/XO_Troubleshooting_Battery#Capacity_test> of
the battery.

*Is the battery capacity significantly lower than that of the rated
specification?* If so, see #Battery capacity is significantly degraded

On Mon, Feb 22, 2016 at 6:17 AM, Mike Dee <mikedee4 at gmail.com> wrote:

> I don't have a 1.5, I have a xo-1. But the battery can build a memory, or
> whatever and need to be reconditioned. There is a process that is built in
> the firmware of the xo and the battery. I will look it up and post.
> On Feb 22, 2016 6:13 AM, <peter at easthope.ca> wrote:
>> When my XO 1.5 shows about 33% charge, the system shuts
>> down with no warning.  This is normal behaviour?  I'd
>> expect the system to allow the battery to reach a lower
>> charge and ultimately warn the user that shutdown will
>> be necessary after a predicted lapse.
>> http://wiki.laptop.org/go/Battery_and_power should include
>> something about system response to battery charge level.
>> Is my system misbehaving?  Are people installing an additional
>> package to have a low battery warning?
>> Thanks,                   ... Peter E.
>> --
>> 123456789 123456789 123456789 123456789 123456789 123456789 123456789 12
>> Tel +1 360 639 0202
>> http://easthope.ca/Peter.html Bcc: peter at easthope. ca
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