The Notebook Review forums were hosted by TechTarget, who shut down them down on January 31, 2022. This static read-only archive was pulled by NBR forum users between January 20 and January 31, 2022, in an effort to make sure that the valuable technical information that had been posted on the forums is preserved. For current discussions, many NBR forum users moved over to NotebookTalk.net after the shutdown.
Problems? See this thread at archive.org.

    Understanding Battery Capacity

    Discussion in 'Lenovo' started by docdeh, Jul 6, 2007.

  1. docdeh

    docdeh Notebook Geek

    Reputations:
    92
    Messages:
    81
    Likes Received:
    0
    Trophy Points:
    15
    I have comparing the specs for the 6-cell ("enhanced") battery for the T61 and the 7-cell ("high capacity") battery. But oddly they are both shown as 5200 mAh on the sites I've examined.

    One other point is that these are listed on the Lenovo website as batteries for the T60 series, yet I've also read the T60 batteries won't work with the T61. If the T60 series did work would we not be able to get the 9-cell battery?
     
    docdeh, Jul 6, 2007
    #1
  2. s4iscool

    s4iscool Notebook Deity

    Reputations:
    15
    Messages:
    909
    Likes Received:
    0
    Trophy Points:
    30
    While the 5200 spec might be right, when I check the "Design capacity" of the 7 and 6 cell batteries, I get the following numbers:

    Design Capacity:

    65.52Wh 7 Cell
    56.16Wh 6 Cell

    And if you see my picture post, you can see the 7 cell does have a larger physical size over the 6 cell.
     
    s4iscool, Jul 6, 2007
    #2
  3. docdeh

    docdeh Notebook Geek

    Reputations:
    92
    Messages:
    81
    Likes Received:
    0
    Trophy Points:
    15
    Ah. Interesting. The 4-cell shows 2600+ (don't recall exactly) mAh. That's an obvious difference. Now to find how mAh and Wh relate....

    So there is a bit over a 10% increase in capacity showing there.
     
    docdeh, Jul 7, 2007
    #3
  4. k_delta

    k_delta Notebook Enthusiast

    Reputations:
    0
    Messages:
    30
    Likes Received:
    0
    Trophy Points:
    15
    Multiply the mAh value by the voltage of the battery and you have the Wh value.
     
    k_delta, Jul 7, 2007
    #4