True capacity and charging times on Thinkpad W530

Discussion in 'Lenovo' started by Ben Hendin, Jan 10, 2018.

  1. Ben Hendin

    Ben Hendin Newbie

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    TL: DR; I'm trying to figure out exactly how much battery run-time I should get on my W530 with a 9-cell battery AND how long such a battery should take to charge.

    I realize these are somewhat subjective, but what I'm finding is that Power Manager wavers between about 4-6 hours when the battery is at 100%. This is with the laptop in "power savings mode" (battery optimization but not battery stretch). This is also with limited or no use of the machine. Basically jut moving the mouse around or typing in Notepad.

    If I start to do some basic work (like web browsing) then PM adjusts to the 2-3 hour mark.

    It also appears that it takes approximately 6 hours to charge the battery to full (with the laptop on in same state as above).

    Do these numbers seem relatively normal? 2-3 hours for web browsing and a 6 hour recharge time?

    Background info:

    I just bought this used W530. It appears to be in great shape cosmetically and has passed all diagnostic tests I have run. Basic specs:

    i7-3840
    32 GB RAM
    256 SSD
    K2000

    I purchased a "new" 9 cell battery off of Amazon, not Lenovo branded but supposedly a "70++" 94Wh (which is confirmed by the battery case itself).

    This battery is only reporting a "Full Charge Capacity" of 85.92Wh so it is clearly not exactly what was advertised. For the price though an 86Wh battery is still pretty decent. However, I have some concerns about how much power I'm getting and how long a charge takes.

    The 6 volt that came with it is only at like 6Wh capacity left and lasts maybe only 15 minutes and yet it too takes like an hour to charge. I've tried to reset the 6 volt but it seems to hang at like .31Wh when draining.

    I've seen info all over the board about how long a W530 should last with a 9 cell. Some say 3-4 hours is normal and others say they can get 12 if it is just idling. But even with WiFi off the highest I've seen it read is like 7 hours.

    I'm almost more concerned about the charge time. Is it normal to take 6 hours to charge to full?

    More info:

    - I have ensured that no battery firmware update applies to these batteries.
    - I also tested this on Windows 7 with Power Manager advanced battery settings to charge to 100%. Prior to making this change the available battery time was significantly less.
    - I have 2 chargers for this laptop and have tested with both.
     
  2. ZaZ

    ZaZ Super Model Super Moderator

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    Third party batteries are usually a little more flaky. They tend to give you less run-time and wear more quickly, which is probably why you're missing 9w of charge capacity. My guess would be it's been sitting a while. Due to the chemical properties of batteries, they start to wear as soon as they're made. I'd send it back if possible. Amazon is usually pretty good about those things, particularly if you claim it's defective. Good luck and welcome to NBR.
     
  3. Ben Hendin

    Ben Hendin Newbie

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    Yea, I know nothing matches the OEM batteries in terms of quality. For a brand new battery, even if 3rd party, the 10% of missing Wh should still be relate-able to a full OEM though.

    Meaning if my 84Wh gets 3 hours (180 mins), then a 94Wh (approximately 10% more) should get another 20 minutes or so, right?

    If Power Manager is to be trusted in terms of the used watts, then the math should be somewhat simple. If PM says it using 28W then an 84Wh battery should be able to power it for 3 hours, OEM or not. Sure, with a 3rd party that available capacity may go down over time quicker, but if a battery is measuring 84Wh then presumable that is what it delivers.

    So when I read these older posts of people saying they get 6 hours even out of the 6 cell batteries, and 9-12 off the 9 cell I'm just not sure how they are getting their power consumption down to like 9 watts. It just doesn't seem feasible.

    Also...as I mention...I'm unsure about these long charge times as well.

    Thanks!
     
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