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Thread: Rechargeable AA battery shoot out

  1. #1
    Flashaholic*
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    Default Rechargeable AA battery shoot out

    warning

    this are datas read on my instruments, may be inaccurate, i have only 4 batteries of every type, maybe one or more of them are damaged and give weakest results, my methodology is different from the IEC standard so may give different results




    shoot-out updated at 13 feb 2010

    uncompressed file 5.28MB

    http://www.speedyshare.com/files/209..._shoot_out.xls

    the same file but compressed 33KB

    http://www.speedyshare.com/files/209...oot_out.xls.7z

    download the file and open with excel or calc or compatible

    ask if you don't understand something

    how to read the spreadsheet

    Cycles: are the cycle of discharge and charge, from the first discharge out from the box until they die

    routine charge: is the charge method used for the battery if nothing else is write in the cycle column

    routine discharge: is the discharge method used for the battery if nothing else is write in the cycle column

    D. 1A [start-1.1V-0.8V-average]: this mean Discharge at 1A, i will write in the four box under the battery the starting voltage without load, the mAh erogated by the battery until it reach 1.1 and 0.8V with load, the average voltage with load (if you multiply the average voltage with the mAh you find the total energy that the battery can store)

    C. routine [start-peak-mAh-dT]: this mean Charge with method described under the battery description like "routine charge", i will write in the four box under the battery the starting voltage without load, the peak voltage with load during the charge, the mAh erogated by the charger, the difference in temperature from the start to the end of the charge

    in the discharge description there is also the time after the last charge start the discharge, can be 24 hours or 30 days or something else

    the readings of voltage under load are made directly from the battery for avoid the resistance of the wires that takes some mV

    charges and discharges are made without a cooling fan except the charge at 5A where i use a fan but at a very low speed just for move the air in the charger that is quite closed
    Last edited by davidefromitaly; 02-15-2010 at 04:53 AM.

  2. #2

    Default Re: Ultimate AA battery shoot out

    DX carries the GP cells here.

  3. #3

    Default Re: Ultimate AA battery shoot out

    Maha Powerex 2700
    Maha Imedion 2100 (LSD)
    Last edited by clintb; 10-21-2009 at 06:18 PM.

  4. #4
    Flashaholic timbo114's Avatar
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    Default Re: Ultimate AA battery shoot out

    Tenergy 2300mAh LSD

  5. #5
    Flashaholic*
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    Default Re: Ultimate AA battery shoot out

    i have added your suggestions, but i appreciate if you write me also some good dealers that have more brands so i can save a bit for shipping...

    i have a weight limit of around 4lb. so i can't test too many cells, i prefer to stay on the more common ones
    Last edited by davidefromitaly; 10-22-2009 at 04:07 AM.

  6. #6
    *Flashaholic* Marduke's Avatar
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    Default Re: Ultimate AA battery shoot out

    Test request: 100 cycles on Sanyo 2700's and Sanyo Eneloops, then do 0, 30, 60, & 90 day self discharge tests. If that much time is not feasible, 0 and 30 day tests would be the second most preferable.

    Thanks.

  7. #7
    Flashaholic*
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    Default Re: Ultimate AA battery shoot out

    Quote Originally Posted by Marduke View Post
    Test request: 100 cycles on Sanyo 2700's and Sanyo Eneloops, then do 0, 30, 60, & 90 day self discharge tests. If that much time is not feasible, 0 and 30 day tests would be the second most preferable.

    Thanks.

    yeah something like that

    first of all i think to discharge all the batts at 500mA

    then charge them, some at 0,2C, some 0,8C, some at 2C

    i have 4 of each, so i will select the highest with the lowest capacity and run them in pair, so i can test what happend with overdischarge and partial discharge

    the other 2 i will test in single mode but with different charge method, dunno maybe one with -dV and one with temperature raise...

    initially i will do a 24hr 30days 6 months test with well formed batts, then i think to do a 24hr and 30 days test every 30 cycles and the 6 months maybe every 90-120 cycles...

  8. #8
    Flashaholic* old4570's Avatar
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    Default Re: Ultimate AA battery shoot out



    I look forward to your results : The Duracell 2650 might be the only one I have that your planning on testing .

  9. #9

    Default Re: Ultimate AA battery shoot out

    Hi David,

    I would to see these LSDs tested:

    Delkin 2300 mah
    Nexcell EnergyON 2100 mah
    Lenmar R2GAA 2150 mah

    These can be found at Thomas Distributing.

    As a FYI, a similar effort was conducted about 2 years ago on a different forum - here. After reviewing those test results, I've been a fan of Maha Imedions. Might be provide some data points.

    Good luck and looking foward to following your 'journey'.

  10. #10
    Flashaholic Billy Ram's Avatar
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    Default Re: Ultimate AA battery shoot out

    Throw in Titanium 2700s. They are not LSDs but but perform well among LSDs in other tests.
    Billy

  11. #11
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    Default Re: Ultimate AA battery shoot out

    Hallo davidefromitaly,

    as an interesting test object I'd like to suggest the new LSD accubattery AA from Switzerland (not so far from you). I've got some samples since a few days and they seem to be promising.

    BTW: I'm always interested in good measuring equipment and thus I'd like to know, what device you intend to use for the analysis. Would you please tell me?

    Wulf

  12. #12
    Flashaholic*
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    Default Re: Ultimate AA battery shoot out

    i have a robbe 8393, a european RC charger/analyzer

    i have a 4lb weight limit so i can't test ALL the batteries... i prefer to stay on the most available

    but the new energizer semi-LSD are disappears?

  13. #13
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    Default Re: Ultimate AA battery shoot out

    I would say the list in first post (currently) is very good. Obviously the more batteries the better but since you want to limit the list I would not worry about the ones you currently can't find (because they aren't very common) but add the Titanium 2100 LSD and the Titanium 2700.

    Just remembered they don't make the Titanium 2100 LSD anymore. Forget that one.

  14. #14
    Flashaholic
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    Default Re: Ultimate AA battery shoot out

    I'm also interested in results from the Tenergy 2300 LSD.

  15. #15

    Default Re: Ultimate AA battery shoot out

    Try to add the Ansmann 2850 from thomasdistributing

  16. #16

    Default Re: Ultimate AA battery shoot out

    Quote Originally Posted by videoman View Post
    Try to add the Ansmann 2850 from thomasdistributing
    Before they're even tested, I'd bet many folks here would be in agreement those will be underperforming by quite a bit. IIRC, the Maha Powerex 2700's hold the distinction of best performing high capacity non-LSD cell. It's up to the OP, but if I were testing, I'd not waste money on anything over 2700 mAh, unless, of course, he has the money to burn and time to devote.

    edit: NM, he's going to test them. It'll be interesting, though not surprising if they fall flat on their face.
    Last edited by clintb; 10-24-2009 at 06:43 AM.

  17. #17
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    Default Re: Ultimate AA battery shoot out

    edit...
    Last edited by davidefromitaly; 10-25-2009 at 05:06 AM.

  18. #18

    Default Re: Ultimate AA battery shoot out

    Newbie here, but this thread is basically exactly what I'm looking for.

    I'd add to the list the following:

    CTA 2700mAh AA $10.97/4
    Nexcell 2700mAh AA $10.97/4
    Delkin Power 2900mAh AA $12.97/4
    MAHA PowerEx 2700mAh AA $24.97/8 $49.57/16

    Prices are TD. These are the batteries I'm looking at for future purchase but would love a review. Have been getting the PowerExes due to their good rep but I'd be curious on how those others compared relatively.

    For what it's worth, I have an MH-C9000 charger.

  19. #19
    Flashaholic*
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    Default Re: Ultimate AA battery shoot out

    Quote Originally Posted by davidefromitaly View Post
    -4 ansmann max-e
    -4 ansmann 2850
    -4 delkin 2300 lsd
    -4 duracell active charge
    -4 duracell 2650
    -4 energizer LSD 2300
    -4 energizer 2450
    -4 GP recyko
    -4 lenmar ready3go
    -4 maha imedion LSD
    -4 maha powerex 2700
    -4 nextcell energyon
    -4 philips 2100 non-lsd
    -4 powergenix ni-zn
    -4 rayovac hybrid 4.0
    -4 sanyo 2700mAh
    -4 sanyo eneloop
    -4 tenergy ni-cd 1000
    -4 titanium ni-cd 1200
    -4 titanium hi-current 1800
    -4 titanium 2700
    -4 uniross 2100 non-lsd
    -4 uniross encore 2700
    -4 uniross hybrio 1600
    -4 uniross hybrio 2100
    -4 uniross 2100 oem
    ok this is my last configuration, i will post a datasheet for the datas, what do you prefer, microsoft excel or openoffice calc?

  20. #20
    Flashaholic* Alan B's Avatar
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    Default Re: Ultimate AA battery shoot out

    Google spreadsheet.

  21. #21

    Default Re: Ultimate AA battery shoot out

    Quote Originally Posted by davidefromitaly View Post
    ok this is my last configuration, i will post a datasheet for the datas, what do you prefer, microsoft excel or openoffice calc?
    OpenOffice, definitely.

  22. #22
    Flashaholic*
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    Default Re: Ultimate AA battery shoot out

    But does Excel open Calc files? I know Calc open Excel files.

  23. #23
    Enlightened Zeroignite's Avatar
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    Default Re: Ultimate AA battery shoot out

    You can just tell OO to save it as an excel file every time.

  24. #24
    Flashaholic*
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    Default Re: Ultimate AA battery shoot out

    we can start to rock guys?


  25. #25
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    Default Re: Ultimate AA battery shoot out

    Any chance of getting comparisons of the positive and negative ends?

    something like this:




  26. #26
    Flashaholic*
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    Default Re: Ultimate AA battery shoot out

    Quote Originally Posted by Egsise View Post
    Any chance of getting comparisons of the positive and negative ends?
    sure, but for all or some brand? cause for all togeter will be difficult to caught the details, i can do a macro on a specific brand

  27. #27
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    Default Re: Ultimate AA battery shoot out

    Quote Originally Posted by davidefromitaly View Post
    we can start to rock guys?

    LETS DO IT! That is a lot of batteries. The results of this test will be interesting and valuable.

    EDIT: Are the Duracell pre-charged the white topped or black topped versions?

  28. #28

    Default Re: Ultimate AA battery shoot out

    they appear to be the standard non-loop version of Nimh batteries.

  29. #29
    Flashaholic*
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    Default Re: Ultimate AA battery shoot out

    Quote Originally Posted by slappomatt View Post
    they appear to be the standard non-loop version of Nimh batteries.
    see the label, DX1500 mean LSD for duracell, while DC1500 are standard

    i'm working on the spreadsheet, here you can find a preliminary version

    password: forcpfonly

    click here for download the spreadsheet

  30. #30
    Flashaholic*
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    Default Re: Ultimate AA battery shoot out

    But I mean the tops of the LSD Duracell batteries. They sell two different kinds of battery and there is no way to tell the difference except that the tops are a different colour and one is made in Japan and the other is made in China.

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