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    Latitude D620 battery mystery?

    Discussion in 'Dell' started by jdtech, Dec 13, 2006.

  1. jdtech

    jdtech Notebook Enthusiast

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    Hi, just downloaded Battery Eater pro v2.70 and am puzzled about my battery, I thought I had a 6-Cell, but some interesting readings from this programme made me think otherwise:

    Battery Name: DELL PC7646
    Manufacturer: Samsung SDI
    Unique ID: 1552Samsung SDIDELL PC7646
    Electrical Info -
    Design Capacity: 57720mWh (5344mAh)
    Full Charged Capacity: 48418mWh (4483mAh)
    Current Capacity: 57720mWh (5344mAh)
    Current Voltage: 12.488V
    Designed Voltage: 10.8V
    Cells Count: 3

    I'm puzzled as to whether this is the 4Cell or 6Cell battery in operation; I get battery lifetimes of about 2hrs 30 mins when using WiFi and screen on medium brightness...
     
    jdtech, Dec 13, 2006
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  2. Jason

    Jason Overclocker NBR Reviewer

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    Did you look on the actual battery? It should say a model number, and you should be able to google that to find out how many cells it has. Perhaps the program is getting a messed up reading of your battery. Cells count... Dell doesn't make a 3 cell battery for the D620 :p
     
    Jason, Dec 13, 2006
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  3. lazybum131

    lazybum131 Notebook Evangelist

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    You have the 6-cell battery that Dell specs as 56WHr, Battery Eater Pro reads it as having a 57.720Whr design capacity. The 4-cell is only 35Whr.

    For all the laptops I've ran Battery Eater Pro on it has lists the battery as having half the cells as actual (i.e. 8-cell battery reports as a 4-cell).

    Also, I don't think BEP is reading the actual capacity (Current Capacity) correctly for the D620, I'm pretty sure the Full Charge reading is the true capacity your battery currently has. Meaning your battery has about 13% battery wear (56 -> 48.4WHr)

    2.5-3 hours is about right for the 6-cell if you have the dedicated Nvidia 110m graphics, the G72 core doesn't seem to be particularly power efficient.
     
    lazybum131, Dec 13, 2006
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  4. jdtech

    jdtech Notebook Enthusiast

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    Thanks for the info guys, thinking it about it, I was on AC power when I did those tests, so the Current Capacity probably isn't accurate.
     
    jdtech, Dec 13, 2006
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  5. jdtech

    jdtech Notebook Enthusiast

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    Ok, here's a question, when my battery gets wear down to about 30 - 40%, what are my rights as to getting a new one free? I have standard Latitude 3yrd NBD onsite warranty, can I just say - its wearing out, can I have a new one (in effect anyway)? Or will I have to shell out £70 for a new one?
     
    jdtech, Dec 13, 2006
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  6. jdtech

    jdtech Notebook Enthusiast

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    Sorry to annoy you further, but does anybody know the answer to the above question? I've had to sacrifice some battery life by turning my internal USB hub to 2.0 express instead of 1.1 compatible in order to stop an annoying just audible beeping noise from inside my laptop (as advised on the Dell forum).
     
    jdtech, Dec 15, 2006
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