question about lshw

[sara fink]

On Wed, Oct 10, 2012 at 6:38 PM, Doron Shikmoni <doron at isoc.org.il> wrote:

> On Wed, Oct 10, 2012 at 5:08 PM, sara fink <sara.fink at gmail.com> wrote:
>
>> Finally got to this issue. Here is the output of dmidecode regarding the
>> battery. It shows  4 times portable battery
>> (...)
>>
>> Looks like pretty much the same. Now how do I check if this is indeed a 6
>> cell battery or less?
>>
>
> Yeah, they read off the same data, this was just a cross-check.
>
> So if I had to guess I'd say that the battery mis-reports its attributes
> via DMI data, big time (see all the fields that are filled with junk
> placeholders rather than actual info).
>

Indeed. Although I have this feeling that all companies do the same, simply
because they don't care too much about these fields.

>
> Could it be that the battery you're holding is listed as "Samsung
> AA-PB9NC6B *replacement* battery" (emphasis on "replacement" if you don't
> read HTML mail)? This would mean it's a low cost aftermarket vendor rather
> than original Samsung, which can explain why its firmware is broken so
> profoundly.
>

It is not a replacement. It's a original battery of samsung. It has 4400mAh
48Wh, 11.1V.  BUT, it's written: Battery cells made in Korea. Assembled in
China. It's a new laptop bought from bug.

>
> At any rate, what you really care about is the battery's capacity - and
> that is the 4400mAh figure. Number of cells per se is not important (though
> relatively speaking, it translates into capacity). From a casual look
> around, the typical 4400mAh replacements for this particular Samsung
> battery are 6-cell, Li-Ion.
>
> Doron
>
>
>
>
>
>>
>>
>> On Tue, Sep 11, 2012 at 10:18 PM, Doron Shikmoni <doron at isoc.org.il>wrote:
>>
>>> Hello Sara,
>>>
>>> A couple comments:
>>>
>>> 1. lshw takes (most of) its data out of DMI, and interprets some of it
>>> based on hardcoded constants. This might translate into incorrect
>>> interpretation for some of the info, in this case, the battery's chemistry
>>> or the number of batteries. Another possibility is that the battery or the
>>> laptop wrongly reports its own attributes, or some similar discrepancy.
>>>
>>> It might be interesting to take the output of dmidecode and compare
>>> notes with lshw.
>>>
>>> 2. The fact that you get a report for more than one battery is
>>> orthogonal and unrelated to the number of cells. The cells (4,6, or 9 of
>>> them) are all part of one battery, and do not represent separate batteries.
>>> In other words, for one 6-cell battery, the correct report should have been
>>> one battery, not 6.
>>> So the fact that you received a report about batteries 0-3 does not
>>> indicate 4 cells, but rather, incorrect counting of battery instances by
>>> lshw (or incorrect DMI reporting by Mr. MoBo).
>>>
>>> Hope this helps,
>>> Doron
>>>
>>>
>>>
>>>
>>> On Sun, Sep 9, 2012 at 5:29 PM, sara fink <sara.fink at gmail.com> wrote:
>>>
>>>> I ran lshw and found out about the battery of the laptop that it has 4
>>>> cells. It appears as battery 0, battery 1, battery 2, battery 3. However,
>>>> based on the model of the battery it is supposed to be 6 cells. I was
>>>> wondering which one is correct.
>>>>
>>>> The model of the battery is Samsung AA-PB9NC6B  11.1V, 4400 mAh. On the
>>>> battery it shows it's Li-Ion battery. lshw shows it's nickel cadmium.
>>>>
>>>>   *-battery:0
>>>>        description: Nickel Cadmium Battery
>>>>        product: Battery Name
>>>>        vendor: Battery Manufacturer
>>>>        physical id: 1
>>>>        version: 01/01/2012
>>>>        serial: Serial Number
>>>>        slot: Location of the battery
>>>>   *-battery:1
>>>>        description: Nickel Cadmium Battery
>>>>        product: Battery Name
>>>>        vendor: Battery Manufacturer
>>>>        physical id: 2
>>>>        version: 01/01/2012
>>>>        serial: Serial Number
>>>>        slot: Location of the battery
>>>>   *-battery:2
>>>>        description: Nickel Cadmium Battery
>>>>        product: Battery Name
>>>>        vendor: Battery Manufacturer
>>>>        physical id: 3
>>>>        version: 01/01/2012
>>>>        serial: Serial Number
>>>>        slot: Location of the battery
>>>>   *-battery:3
>>>>        description: Nickel Cadmium Battery
>>>>        product: Battery Name
>>>>        vendor: Battery Manufacturer
>>>>        physical id: 4
>>>>        version: 01/01/2012
>>>>        serial: Serial Number
>>>>        slot: Location of the battery
>>>>
>>>>
>>>>
>>>>
>>>> _______________________________________________
>>>> Linux-il mailing list
>>>> Linux-il at cs.huji.ac.il
>>>> http://mailman.cs.huji.ac.il/mailman/listinfo/linux-il
>>>>
>>>>
>>>
>>
>
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