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Thread: Ansmann 2850 AA Cells Performance Results!

  1. #1

    Default Ansmann 2850 AA Cells Performance Results!

    Since there are hardly any reviews or barely known, well I am about to give my legit review based on what I have experience so far with these cells.

    I got these cells 2 days ago and all I have to say is WOW the reviews were not kidding at all. Never have I used a cell that has a very solid performance. In fact it beats energizers 2500, Duracells 2650 and even Sanyo 2700, and it is par with Energizer Ultimate Lithium in terms of Lasting power.

    In fact I decide not to do a break in and decided to just charge the first cycle. This is just the first recharge/discharge cycle. Results are??. I am very very impressed. It charged my blackberry Phone from completely dead to 95% on the first charge cycle.

    Another thing I noticed about these cells is that it is hard for these cells to heat up during charging/discharging. Not even brand new white tops Duraloops cells stays that cool during discharge. It even comes with the 2 year warranty if the cell should fail withing the 2 year period.

    So far its only been 2 days and only charged them once so I will keep you guys posted.


    The physical quality of these cells are made well. Much better quality than the duracells 2650 and slightly better than the Eneloops or Duraloops. Don't get me wrong these are great cells, but i wasn't too satisfied since my mobile charger will eat the duraloops. Still much better than alkalines but still.

    But these 2850 Cells are the king of performance hands down!!. They have a very low internal resistance. My Mobile charger actually stays cool. That never happens with any of the other cells I tried in the past. Even brand new cells.

    Also want to say that all of the 4 cells out of the package were exactly 1.14v that means that these cells are in good shape. Though they don't have a manufacture date but from the results they are pretty new cells.
    Last edited by MarioJP; 09-30-2009 at 11:29 PM.

  2. #2
    *Flashaholic* Marduke's Avatar
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    Default Re: Ansmann 2850 AA Cells Performance Results!

    Run a test cycle on them and I think you'll be surprised.

  3. #3

    Default Re: Ansmann 2850 AA Cells Performance Results!

    Quote Originally Posted by Marduke View Post
    Run a test cycle on them and I think you'll be surprised.
    I think I will when I get the time. Right now i need to keep a backup power source when I am on the go lol.

    These cells are slightly lighter than the Duracells 2650.

    I can give the Label Info

    AA HR6 2850mAh (AKKU) the AKKU means lol.

  4. #4
    Flashaholic* monkeyboy's Avatar
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    Default Re: Ansmann 2850 AA Cells Performance Results!

    I only have good things to say about Ansmann batteries. I had a bunch of AA 2700 Ansmann's for 3+ years now and they're still going strong despite all the abuse i've put them through.
    I've tried Energizer and Uniross cells which have died within one year.

    Some years ago, I came across a test of Ansmann 2300's over 100 cycles (website is no longer up) and they outperformed even the Sanyo 2300's which were top performers at the time.

    I also own the Ansmann energy 8 charger but I'm not too impressed with that. The "auto discharge" function seems to discharge for a set time regardless of the state of the battery (even if it's completely flat). Occasionally it can terminate charge early too.

    I'm interested to see your test results on the 2850's Mario.

  5. #5
    Flashaholic* 45/70's Avatar
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    Default Re: Ansmann 2850 AA Cells Performance Results!

    Interesting. I wonder who makes Ansmann batteries? I'm sure they don't, so that'd make them rebadged ........????

    Dave

  6. #6

    Default Re: Ansmann 2850 AA Cells Performance Results!

    I also noticed that these cells can handle large amount of current whether its from charging or discharging, plus on the labe it saya "fast rechargeable"
    Last edited by MarioJP; 10-01-2009 at 04:51 PM.

  7. #7
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    Default Re: Ansmann 2850 AA Cells Performance Results!

    The truth about if they are good or not will be disclosed after some use 1 year or so). Several high capacity cells were good when new, but after some cycles/use they developed very high self discharge or the capacity was greatly reduced.

  8. #8
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    Default Re: Ansmann 2850 AA Cells Performance Results!

    performance results??? more like "first look".
    the other assmann batteries that were tested in various locations on the web, had good capacity, and low self discharge for not BEING an actual LSD cell, it will be interesting to see what happen in Time, when the other Thangs go all yuckey.
    Last edited by VidPro; 10-01-2009 at 07:52 PM.

  9. #9

    Default Re: Ansmann 2850 AA Cells Performance Results!

    Quote Originally Posted by VidPro View Post
    performance results??? more like "first look".
    the other assmann batteries that were tested in various locations on the web, had good capacity, and low self discharge for not BEING an actual LSD cell, it will be interesting to see what happen in Time, when the other Thangs go all yuckey.
    Well reason for the "performance results" title is that eventually it is going to give me the final results. But from the start so far I am very impressed. So much energy crammed into a AA cell.

    At the initial first charge cycle I actually had to keep an eye as for some reason the charger would terminate the charge too soon. This happened many times and was a bit frequent during the charging cycle. It would display "full" and I kept resetting the charger every time it did that. Until eventually voltage peaked at 1.48V-1.49V and that is when i stopped the charge.

    The second charge cycle things went smoothly and this time no interruptions, and the charge stopped at 1.49V which is the correct timing to terminate the charge.

    Update: Batteries starts to get warm when the current reaches 2.70Ah and terminates when it gets to 2.85Ah-2.90Ah
    Only 2 Cells are being charged since my mobile charger uses 2AA and I rotate so this way I always have a set charged. So far the results are

    Cell 1: Terminated at 2.94Ah 1.51V
    Cell 2: Terminated at 2.97Ah 1.51V

    I don't leave the batteries in the charger for trickle charging either. The capacities for these cells are too high for a 97ma trickle charge I think.
    Charging Current Rate:1800mA (Does not seems to warm up the cells during charging at all, only starts to warm up when the cells are nearing to max capacity.)

    Total time for both cells 1hr:34min

    Not bad
    Last edited by MarioJP; 10-01-2009 at 09:35 PM.

  10. #10
    *Flashaholic* Marduke's Avatar
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    Default Re: Ansmann 2850 AA Cells Performance Results!

    Still waiting for a capacity check to check the real "performance".

  11. #11

    Default Re: Ansmann 2850 AA Cells Performance Results!

    working on it lol. Also keep in mind that these cells are still new as I heard that brand new cells take several cycles to obtain full capacity. But so far in the "real world Performance" they do indeed perform very well from the start.

    Results won't be in until tomorrow and would take 4-6 hours to fully discharge these cells at 500ma discharge rate. So I am going to get the results so far and see how much capacity theses cells really do have.

    I will keep you posted
    Last edited by MarioJP; 10-01-2009 at 11:00 PM.

  12. #12

    Default Re: Ansmann 2850 AA Cells Performance Results!

    So far with the 2 cells I have tested for the capacity are.

    Cell 1 2500mAh
    cell 2 2580mAh

    Looks like still needs more cycles. My other set of cells which were tested in a real world. It finally charged my blackberry from 0 to 100%. Seems like these 2 cells are getting better.

    These are the updates so far. One thing to know is that during charging one of the cells terminates too soon, or false termination. I am guessing is due to the cells are still new.

    New cells will cause the charger to false terminates and eventually be eliminated after several cycle from what I read. Anyways I am still not done.

  13. #13
    Flashaholic* Turbo DV8's Avatar
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    Default Re: Ansmann 2850 AA Cells Performance Results!

    Quote Originally Posted by MarioJP View Post
    Also want to say that all of the 4 cells out of the package were exactly 1.14v that means that these cells are in good shape.


    1.14 volts is nearly stone cold dead for NiMH!

  14. #14

    Default Re: Ansmann 2850 AA Cells Performance Results!

    Quote Originally Posted by Turbo DV8 View Post


    1.14 volts is nearly stone cold dead for NiMH!
    I know that, but most were saying if the batteries comes 0 volts out of the package you might have a bad cell. I was just trying to find out if these cells were not completely dead.

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    Default Re: Ansmann 2850 AA Cells Performance Results!

    Quote Originally Posted by MarioJP View Post
    So far with the 2 cells I have tested for the capacity are.

    Cell 1 2500mAh
    cell 2 2580mAh

    Looks like still needs more cycles. My other set of cells which were tested in a real world. It finally charged my blackberry from 0 to 100%. Seems like these 2 cells are getting better.

    These are the updates so far. One thing to know is that during charging one of the cells terminates too soon, or false termination. I am guessing is due to the cells are still new.

    New cells will cause the charger to false terminates and eventually be eliminated after several cycle from what I read. Anyways I am still not done.
    do you use a lacrosse bc900 for testing?

  16. #16

    Default Re: Ansmann 2850 AA Cells Performance Results!

    Quote Originally Posted by davidefromitaly View Post
    do you use a lacrosse bc900 for testing?
    Yup!. 500mA discharge rate.

    all 4 cells are currently testing in progress and has been discharging for 4 hours and still going.

    Update: all 4 cells are done discharging and this is what I got

    Cell 1: 2400mAh.
    Cell 2: 2402mAh.
    Cell 3: 2402mAh.
    Cell 4: 2402mAh.

    This is strange??. How did i get 2500mAh last time?? I am 400mAh short. Sounds like the charge terminated a bit too early. Any suggestions because I am confused
    Last edited by MarioJP; 10-03-2009 at 12:54 PM.

  17. #17
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    Default Re: Ansmann 2850 AA Cells Performance Results!

    According to Finnish consumer agencys test:
    Capacity after 10 cycles: 2378mAh
    Capacity after 50 cycles: 2419mAh
    Capacity after 130 cycle: 2241mAh
    Capacity after 20 days: 38%

  18. #18
    *Flashaholic* Marduke's Avatar
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    Default Re: Ansmann 2850 AA Cells Performance Results!

    Quote Originally Posted by MarioJP View Post
    Yup!. 500mA discharge rate.

    all 4 cells are currently testing in progress and has been discharging for 4 hours and still going.

    Update: all 4 cells are done discharging and this is what I got

    Cell 1: 2400mAh.
    Cell 2: 2402mAh.
    Cell 3: 2402mAh.
    Cell 4: 2402mAh.

    This is strange??. How did i get 2500mAh last time?? I am 400mAh short. Sounds like the charge terminated a bit too early. Any suggestions because I am confused
    What setting are you using? The "Test" mode is the correct mode to use, NOT the discharge mode.

    Also, I hope you learned to not blindly believe the number on the label, especially when it's beyond the current possibilities (ie. they are lying).

  19. #19

    Default Re: Ansmann 2850 AA Cells Performance Results!

    I hope that is not the case. I am still not done testing these cells. I only use the discharge after full charging the cells.

    I suppose I can use the test but that can take a very long time, though i haven't looked into that feature yet. What exactly does that do to the cells?

    I want to know if these cells in fact can go up to 2850mAh. Maybe not perfect but at least close, overall they are solid performers rechargeables

  20. #20
    *Flashaholic* Marduke's Avatar
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    Default Re: Ansmann 2850 AA Cells Performance Results!

    Your cells will never get anywhere close to 2850, guaranteed.

    The capacity reported at the end of the discharge cycle (discharge > charge) is the CHARGE capacity, NOT the DISCHARGE capacity. It shows how much energy went INTO the cell, not what came OUT OF the cell.

    The TEST mode (charge > discharge > charge) will display the DISCHARGE, or true capacity.


    It takes no more time than what you are doing since you need to start from charged anyhow. When you come home with discharge cells, put them on TEST at 1A/.5A, and they will be done by the next morning.

  21. #21

    Default Re: Ansmann 2850 AA Cells Performance Results!

    I will try that instead makes things easier lol. But i do pay more attention to the discharge than the charge capacity. The charge capacity I use that as a reference to give me an idea about the cell status. I know that the charge being put in, does not mean is the charge that will comes out of these cells . I should at least get to 2700mAh true capacity though.

    2400 is good but can be better.

    Is it one of those things where the label says "4.7GB of storage" but in reality it is really 4.3GB Blank DVD? I can never understand why things are marketed that way.
    Last edited by MarioJP; 10-03-2009 at 08:18 PM.

  22. #22
    *Flashaholic* Marduke's Avatar
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    Default Re: Ansmann 2850 AA Cells Performance Results!

    2400 is actually rather low for a "high capacity" cell, especially when new, and especially when they are rated for "2850".

    If you wanted ~2700mAh, I would have bought a quality cell that has actually been tested to deliver at or near that.

  23. #23

    Default Re: Ansmann 2850 AA Cells Performance Results!

    But the previous test before this one. One of the cells did hit 2500mAh discharge. I think the charge was terminated too soon when the cells were charging.

    Starting the test now. Have it on test mode this time. Currently testing all 4 Cells. Will post the results after the test is done.


    Testing in Progress....

    Note: I hope this test does not overcharge the cells as they are currently fully charged state.
    Last edited by MarioJP; 10-03-2009 at 08:46 PM.

  24. #24
    *Flashaholic* Marduke's Avatar
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    Default Re: Ansmann 2850 AA Cells Performance Results!

    It's highly unlikely the charger terminated early on -dV. It is much more likely the cells are just that underperforming.

  25. #25

    Default Re: Ansmann 2850 AA Cells Performance Results!

    Quote Originally Posted by Marduke View Post
    It's highly unlikely the charger terminated early on -dV. It is much more likely the cells are just that underperforming.
    Though on the first initial charge did in fact terminated way too early. When i look at the amount of charge being put in. It only put 975mAh and display said "full"???. I had to pull the cell out and reinserted again. It only did that twice on the first charge cycle. Did that to all 4 cells too.

    Second and third charge cycle did not happen again. Strange how it did that though

  26. #26
    *Flashaholic* Marduke's Avatar
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    Default Re: Ansmann 2850 AA Cells Performance Results!

    Quote Originally Posted by MarioJP View Post
    Though on the first initial charge did in fact terminated way too early. When i look at the amount of charge being put in. It only put 975mAh and display said "full"???. I had to pull the cell out and reinserted again. It only did that twice on the first charge cycle. Did that to all 4 cells too.

    Second and third charge cycle did not happen again. Strange how it did that though
    First initial charge from what? The package? That doesn't tell you anything, as a partially discharge cell will not take a full charge.

    High capacity cells are rather fragile, and forcing it to do overcharge can potentially cause permanent damage.

  27. #27
    *Flashaholic* Mr Happy's Avatar
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    Default Re: Ansmann 2850 AA Cells Performance Results!

    Quote Originally Posted by MarioJP View Post
    Though on the first initial charge did in fact terminated way too early. When i look at the amount of charge being put in. It only put 975mAh and display said "full"???. I had to pull the cell out and reinserted again. It only did that twice on the first charge cycle. Did that to all 4 cells too.

    Second and third charge cycle did not happen again. Strange how it did that though
    Not as strange as you think. It is common for new cells to experience false termination on the first charges.

  28. #28

    Default Re: Ansmann 2850 AA Cells Performance Results!

    Results are in!!. These results are much much better too! . This is the charge that's coming out not in.

    Charger: La Crosse BC-9009 Model

    Charging Method: Test Mode

    Cell 1: 2660
    Cell 2: 2662
    Cell 3: 2660
    Cell 4: 2667 This cell in particular is interesting.

    Sounds to me these cells just needed priming. Its getting close to 2700mAh capacity

    Going to try the test one more time and see what I get again. So far its looking good.

    I knew something was not right when the charge was being terminated. Terminates too early. Looks like the false termination still left in these cells. Not severe, but still persists. Looks like the marketing label is not far from the truth.

    Well these are the results from the test!
    Last edited by MarioJP; 10-04-2009 at 09:03 AM.

  29. #29
    Flashaholic* TakeTheActive's Avatar
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    Popcorn Re: Ansmann 2850 AA Cells 'First Look'...

    Quote Originally Posted by VidPro View Post
    performance results??? more like "first look"...
    +1

    The thread is titled "Performance Results", but, IMHO, so far it's been "OP's Opinion With a Few Random Numbers Sprinkled In".

    It would make more sense and be easier to read / interpret if ALL of the parameters (Cell Type, Capacity, Charger Type, Mode, Charge Current, Discharge Current) were in one post.

    Example: [code]
    La Crosse 700mAh AAA | #1 #2 #3 #4
    ---------------------------------+---------------------------

    07/11/09 C9000 Cycle5: 500/ 100| 436 449 468 446 mAh
    07/xx/09 C9000 Cycle4: 500/ 100| 436 446 459 443 mAh
    07/xx/09 C9000 Cycle3: 500/ 100| 439 451 464 449 mAh
    07/xx/09 C9000 Cycle2: 500/ 100| 435 447 462 450 mAh
    07/xx/09 C9000 Cycle1: 500/ 100| 440 452 468 452 mAh
    07/09/09 C9000 Impedance Check: | 1.79 1.82 1.71 1.72 VDC
    07/09/09 C9000 Discharge: 100 | 0 0 0 386 mAh
    05/28/09 C9000 Break-In | 420 433 446 432 mAh#
    05/26/09 C9000 Discharge: 100 | 438 455 478 448 mAh
    05/26/09 C9000 Impedance Check: | 1.76 1.79 1.73 1.74 VDC
    05/26/09 BC900 Discharge: 200 | +499 +495 +901 +536 mAh
    05/25/09 BC900 Charge: 500 | +535 +539 +644 +541 mAh
    03/01/09 C9000 Impedance Check: | 1.80 1.77 1.67 1.71 VDC
    01/29/09 BC900 Refresh: 500/ 250| 462 458 441 459 mAh
    01/28/09 BC900 Discharge: 100 | 398 395 363 404 mAh
    01/17/09 BC900 Refresh: 700/ 350| 487 480 468 482 mAh
    01/15/09 C9000 Break-In | 447 449 436 450 mAh#
    [Bought: 12/22/06 - Intermittent use in various MP3 Players]
    [/code]
    NOTE: '+' before a number indicates Charge INPUT

  30. #30
    Flashaholic* TakeTheActive's Avatar
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    Thinking Re: Ansmann 2850 AA Cells Performance Results!

    Quote Originally Posted by Marduke View Post
    ...The capacity reported at the end of the discharge cycle (discharge > charge) is the CHARGE capacity, NOT the DISCHARGE capacity. It shows how much energy went INTO the cell, not what came OUT OF the cell.

    The TEST mode (charge > discharge > charge) will display the DISCHARGE, or true capacity...
    IMO, part of the problem here is the lack of flexibility of the BC-900 as compared to the MH-C9000. The OP wants to Charge @ 1800mA. But the 1500mA and 1800mA Charge Modes don't allow any form of Discharge (i.e. DISCHARGE, REFRESH, TEST). So, he manually Charges @ 1800mA, then manually Discharges @ 500mA.

    The lack of labels and the possibility for a Newbie to mistake BC-900 'Accumulated Capacity' (Charge/INPUT) with 'Discharge Capacity' (Discharge/OUTPUT) adds to the confusion.

    Quote Originally Posted by Marduke View Post
    ...It takes no more time than what you are doing since you need to start from charged anyhow. When you come home with discharge cells, put them on TEST at 1A/.5A, and they will be done by the next morning.
    Well, it will take 'a little longer'... (1000mA vs 1800mA)
    Last edited by TakeTheActive; 10-04-2009 at 04:16 PM. Reason: Typo

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