[pmjzzz]

We have 2 Mini 9's with Ubuntu - one shows a battery design charge of 35.5 Wh, the other shows just 24.4 Wh. Both were assembled at the end of November. Swapping the batteries shows that it's a battery problem, not a machine problem.

After several days procrastination from Dell's support, today I received a new battery - but again with 24.4 Wh capacity . On the labels, all 3 batteries are supposedly 32 Wh.

Checking the serial numbers - both defective batteries start with KR, and were made in Korea / assembled in China, whereas the good battery starts with CN - made and assembled in China.

Does anyone else have a similar low-capacity battery? I wonder if the different capacities are consistent with the different places of manufacture / serial numbers? I'm looking for more data to follow up on this.

Edit - test results and updated information here:
battery-capacity-24-wh,-not-32-wh-t1723s110.html#p13788

[UnaClocker]

Wow, that's a pretty serious issue! That'd be a 3 cell rather than a 4 cell? Very strange! I'd be interested to hear if more people encounter this.

[davico_rosello]

wow, i'm gona check my 2 minis, xp and ubuntu, thanks for the info.

ok, my black mini, from the first "wave" of mini (ordered the first day ), came with the KR battery, and the Notebook BatteryInfo shows 24420 mWh.

my pink ubuntu mini, that came 2 days ago, has the CN battery, don't know right now how many mWh has, but certainly i change it and put it in my black mini, and i notice a better power consumption.

gona check now what says my CN battery.

[Fallstar]

Where do you check the actual battery capacity?

[davico_rosello]

Originally Posted by davico_rosello

wow, i'm gona check my 2 minis, xp and ubuntu, thanks for the info.

ok, my black mini, from the first "wave" of mini (ordered the first day ), came with the KR battery, and the Notebook BatteryInfo shows 24420 mWh.

my pink ubuntu mini, that came 2 days ago, has the CN battery, don't know right now how many mWh has, but certainly i change it and put it in my black mini, and i notice a better power consumption.

gona check now what says my CN battery.

------------------


ok, some pictures:

first the "good battery"





35518 to the 100% charge, so 35520 is ok.


now the "bad battery"




24419 for the 100%, so 24420 is correct.


i gonna call dell tomorrow :evil:

[davico_rosello]

Originally Posted by Fallstar

Where do you check the actual battery capacity?

http://www.pctipp.ch/downloads/betriebs ... yinfo.html


the good battery has 35520 for 4 cells, so, 3 cell must be 35520/4*3=26640, so, the bad battery (24420) is not even 3 cells! is just 2.92 cells! :evil:

is only 68%, so, if the bad battery runs for 3 hours, the good battery goes for 4.5! a whole hour and a half!

man, i and was happy because my battery charged very fast :lol: :x

[WolfKeeper]

Interesting. I have a "KR" battery, and BatteryBar says 24420Wh fully charged...

[davico_rosello]

i'm chating with a "representative" right now, let's see what happens :lol:

[UnaClocker]

Very interesting.. I don't know of a way to check that info in OS X on my Mini, but I did pop the battery out and had a look, it says Made in Korea.. So it may be one of the bum ones.. I get 3 hours of life out of it.. But that is a bit below the 4 hours Dell advertised.. I moved this to the News section so it'll be on the front page now..

[davico_rosello]

Originally Posted by UnaClocker

Very interesting.. I don't know of a way to check that info in OS X on my Mini, but I did pop the battery out and had a look, it says Made in Korea.. So it may be one of the bum ones.. I get 3 hours of life out of it.. But that is a bit below the 4 hours Dell advertised.. I moved this to the News section so it'll be on the front page now..

you need to check the small square white label with a barcode and the serial. in next to the connector of the battery. if is KR you are doomed! :twisted: