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Thread: 18650 Battery Test

  1. #1
    Flashaholic* old4570's Avatar
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    Default 18650 Battery Test



    1/ Ultrafire 18650 Protected 2600mAh 3.7v
    2/ Ultrafire 18650 2600mAh 3.7v
    3/ Ultrafire 18650 Protected 3000mAh 3.7v
    4/ Ultrafire 18650 Protected 2400mAh 3.7v
    5/ Spiderfire 18650 Protected 2400mAh 3.7v
    6/ EagleTac 18650 Protected 2400mAh 3.7v
    7/ AW 18650 Protected 2600mAh 3.7v
    8/ AW IMR 18650 1600mAh 3.7v
    9/ Generic 18650 2200mAh 3.6v
    10/ Trustfire 18650 2500mAh 3.7v



    Battery Dimensions

    1/ Length 2.65inch or 67.3mm , Dia 0.72inch or 18.5mm
    2/ Length 2.57inch or 65.5mm , Dia 0.72inch or 18.5mm
    3/ Length 2.66inch or 67.6mm , Dia 0.72inch or 18.5mm
    4/ Length 2.66inch or 67.6mm , Dia 0.71inch or 18.2mm
    5/ Length 2.64inch or 67.3mm , Dia 0.71inch or 18.2mm
    6/ Length 2.69inch or 68.3mm , Dia 0.72inch or 18.5mm [ Note – may not fit WF-139 ]
    7/ Length 2.66inch or 67.6mm , Dia 0.72inch or 18.5mm
    8/ Length 2.55inch or 64.9mm , Dia 0.71inch or 18.2mm
    9/ Length 2.59inch or 65.8mm , Dia 0.71inch or 18.2mm
    10/Length 2.59inch or 65.8mm , Dia 0.71inch or 18.2mm

    The Ultrafire 1-2-3 are new , as is the AW 2600mAh [7] and the EagleTac [6] .

    Im going to start with Max capable discharge rate , I will use 3 different flashlights , MTE SSC P7 , Solarforce L2 R2 , and a Luxeon K2 TFFC ..

    For the power curb/run time , it will be the MTE as it has the greatest power consumption ...

    So what I will do is throw the batt in the charger , wait for the green light , then let the batt rest for 30 minutes and then test how much current or amps it can deliver to the flashlight ..
    Power delivery is probably only going to be of interest to those who are looking for seriously high power applications such as MC-E or SSC P7 , maybe ?











    In the first graph , there is no result for the Ultrafire no1 batt as it did not fit the flashlight body , actually 4 batts didnt fit , but Im currently waiting for the EagleTac to charge up [ Came in the post today ] ...Dang , just noticed .. mAh should be Amps ...FIXED !!!










    Ok , that takes care of the current test ....

    SSC P7 Test , Highest to lowest ...

    1. AW-IMR 2.97A
    2. Trustfire 2.83A
    3. UF no1 2600mAh Protected 2.67A
    4. AW 2600mAh Protected 2.66A
    5. Generic Blue 2.65A
    6. UF 2600mAh no2 2.6A
    7. UF 2400mAh Protected no4 2.45A
    8. UF 3000mAh Protected no3 2.33A
    9. Spiderfire 2400mAh Protected 2.3A
    10. EagleTac 2.25A

    The Cree R2 Test

    1. Generic no 9 1.44A
    2. Trustfire 1.43A
    3. AW IMR 1.43A
    4. UF no1 1.4A
    5. UF no2 1.37A
    6. AW 2600 1.34A
    7. UF No4 1.32A
    8. Spiderfire 1.24A
    9. UF no3 1.2A
    10. EagleTac 1.2A


    Sorry the graphs for these are gone ... But listed is the current each battery delivered , SSC P7 and R2 .


    Batt No1-Ultrafire 18650 Protected 2600mAh 3.7v + No2+No3+No4+Spiderfire


    No1 = As near as I can tell I burned through 2200mA
    No2 = As near as I can tell I burned through 2300mA
    No3 = As near as I can tell I burned through 2300mA
    No4 = As near as I can tell I burned through 1600mA
    No5 = As near as I can tell I burned through 1500mA

    Half way folks ... and


    EagleTac No6 + AW2600 +AW IMR + No9 + Trustfire


    No6 = As near as I can tell I burned through 2100mA
    No7 = As near as I can tell I burned through 2200mA
    No8 = As near as I can tell I burned through 1400mA

    Picture host problems again !!!
    Last edited by old4570; 10-09-2009 at 05:50 PM.

  2. #2
    Flashaholic* csshih's Avatar
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    Default Re: 18650 Battery Test

    heheh,

    :singing: that ultrafire 3000mAh is going to fall flat on its face!!

    (watch out for heat.)

  3. #3
    Flashaholic* Black Rose's Avatar
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    Default Re: 18650 Battery Test

    That 3000mAh Ultrafire won't do well at high rates.

    It's been shown to only have decent capacity at low discharge rates due to high internal resistance.

  4. #4
    Flashaholic* old4570's Avatar
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    Default Re: 18650 Battery Test

    Yep , no surprises there ... Be interesting to see the run time though , and could still be a good batt in multi batt flashlights .. Could be ...

  5. #5

    Default Re: 18650 Battery Test

    I say the AW 2600 comes out on top.

  6. #6
    Flashaholic* old4570's Avatar
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    Default Re: 18650 Battery Test

    18650 - Next ill do the runtime test , this is going to take a while ...

  7. #7
    Flashaholic* old4570's Avatar
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    Default Re: 18650 Battery Test

    Ultrafire No 3 = Ultrafire 18650 Protected 3000mAh 3.7v
    What a grueling test , as near as I can tell , the MTE sucked some 2300mA from this battery .. But look at that run time curve .. 120minutes , and all of it usable light , I dont see there being another 700mA in reserve , so Im calling it quits after 120 minutes ...

  8. #8
    Flashaholic* old4570's Avatar
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    Default Re: 18650 Battery Test

    Wow , we are half way , Ultrafires tested as was the Spiderfire ...

    Well , those spiderfire 18650 are no way near as good as the CR123A's , I just dont know what to say ,

    Dare I say ,

    EagleTac / AW's / Trustfire / and generic tests to come ...

    Picture Host seems to be having Problems
    Last edited by old4570; 06-26-2009 at 09:46 PM.

  9. #9
    Flashaholic* Black Rose's Avatar
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    Default Re: 18650 Battery Test

    Too bad about that Spiderfire 18650.

    I was hoping we'd see another surprise like the Spiderfire 16340 cells.

  10. #10
    *Flashaholic* kramer5150's Avatar
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    Default Re: 18650 Battery Test

    Just about every 18650 test I have seen ranked the AW and gray trustfire very high.

    thanks so much for doing this test
    CLICK HERE for my flashlight reviews.
    PAUL KIM... AN INDUSTRY GENIUS

  11. #11
    *Flashaholic* kramer5150's Avatar
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    Default Re: 18650 Battery Test

    Do you think its merely coincidence that overall the unprotected cells outperformed the protected cells with the higher current SSC-P7 and XR-E R2?

    Could there be a correlation between the protection circuit and the cells ability to deliver higher current?
    Last edited by kramer5150; 06-27-2009 at 11:21 AM.
    CLICK HERE for my flashlight reviews.
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  12. #12
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    Default Re: 18650 Battery Test

    The protection circuit, upper limit, may be cutting in, not allowing a high current draw from the cells. AW had this problem initially with some of his protected LiIon's and had the protection circuits modified to handle higher amp drain, particularly in the 17500 format.

    Bill

  13. #13
    Flashaholic* old4570's Avatar
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    Default Re: 18650 Battery Test

    OK Done ! Interesting results ...

    Just need to buy some batts ...

  14. #14

    Default Re: 18650 Battery Test

    Do any of the American internet retailers sell the Trustfires?

    How have the Eagletacs fared safety-wise?

  15. #15
    Flashaholic Forgoten214's Avatar
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    Default Re: 18650 Battery Test

    Wow interesting. What happened to the 3000 mAh ultrafire?

  16. #16
    Flashaholic* Black Rose's Avatar
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    Default Re: 18650 Battery Test

    Quote Originally Posted by Forgoten214 View Post
    Wow interesting. What happened to the 3000 mAh ultrafire?
    Higher internal resistance.

    Works well on lower current draws, but falls on it's face at higher draws.

  17. #17
    Flashaholic* jar3ds's Avatar
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    Default Re: 18650 Battery Test


  18. #18

    Default Re: 18650 Battery Test

    Maybe I'm missing it....which batts didn't fit in which lights?

    Thanks!
    Surefire 18650 Bored Hosts & Cerakote!
    I am visually impaired please excuse my typos =P

  19. #19

    Default Re: 18650 Battery Test

    Greetings,

    Apologies for this question but I just need to confirm as I'm not thoroughly sure about the charts.

    For a single 18650 high drain (about 2700 mah) MC-E light, what brand/model would be best?

    Thanks,
    Moses
    “Don’t ask yourself what the world needs. Ask yourself what makes you come alive, and go do that, because what the world needs is people who have come alive.” Gil Bailie

  20. #20
    Flashaholic* old4570's Avatar
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    Default Re: 18650 Battery Test

    Sorry , charts are gone !

    The picture host I used was shut down , seems some one decided it was a good host for there porn .

    SO there gone .. I also cleaned my HDD , so cant replace them ..

    I have the data written down some where , so I will share that ASAP .

  21. #21
    Flashaholic* old4570's Avatar
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    Default Re: 18650 Battery Test

    Quote Originally Posted by moses View Post
    Greetings,

    Apologies for this question but I just need to confirm as I'm not thoroughly sure about the charts.

    For a single 18650 high drain (about 2700 mah) MC-E light, what brand/model would be best?

    Thanks,
    Moses
    The IMR is best .. Batt No 8

    Just check the SSC P7 Test , ....

  22. #22
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    Default Re: 18650 Battery Test

    Subscribed!
    Waiting for graphs to be reposted

    Very informative comparisons
    One question, do you know if the eagletac cell will fit in Pila IBC charger?

  23. #23
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    Default Re: 18650 Battery Test

    I did a very rudimentary test on the weekend testing out the capacity of my 18650 cells and the waterproofness of my T10L.

    The ingredients were:

    • EagleTac T10L
    • Soshine 2800mAh
    • Ultrafire 2600mAh (the "pink/red' set, but the more expensive version)
    • TrustFire 2400mAh "red and black" set
    • A bucket of water

    According to EagleTac, the T10L is supposed to do 2 hours in high mode. So my goal was to see if I can keep the light powered on high for 2 hours.

    So I turned the light on and dropped it in a bucket of water and the results are as follows:
    [CODE]
    Battery | Starting Voltage | Duration
    ---------------------------------------------------
    Soshine | 4.09v | 1 hour 55 mins
    Ultrafire | 4.13v | 1 hour 51 mins
    TrustFire | 4.12v | 1 hour 59 mins
    [/CODE]As a side note, once the light turned off, I checked their voltages. Both the Soshine and Ultrafire cells had a 0v reading, whereas TrustFire had 3.29v and 3.36v after 30 minutes of rest. The Soshine and Ultrafire cells both were able to be charged full again, with what seems, to be no ill affects.

  24. #24
    Flashaholic* berry580's Avatar
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    Default Re: 18650 Battery Test

    What about this Trustfire?
    http://www.dealextreme.com/details.dx/sku.20392

    i got 1hr 47min on max with it on my Jetbeam Jet-III PRO Ti with the light in water for cooling.

    When it turned off automatically, it was at 3.5V, then eventually went back up to 3.55V after a few minutes. I was a little surprised, I thought the cut off is at 2.75V(?).
    Last edited by berry580; 10-06-2009 at 04:25 AM.
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  25. #25
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    Default Re: 18650 Battery Test

    Quote Originally Posted by berry580 View Post
    Those were the same TrustFires that I tested. There are two red/pink Ultrafire varieties over in DX, and the set I bought were these.

    As for the red/pink Ultrafires used in the Light-Reviews test, they were bought off from KD according to Mev in that thread. Therefore, I have no idea whether they are the same version that I got from DX, or this version which is the cheaper, and allegedly by DX themselves, has an incorrect capacity label.

  26. #26

    Default Re: 18650 Battery Test

    Quote Originally Posted by berry580 View Post
    I was a little surprised, I thought the cut off is at 2.75V(?).
    In fact, the cut off is even lower, somewhere around 2.5V. But the cell voltage will bounce up after you remove the load.

  27. #27
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    Default Re: 18650 Battery Test

    Quote Originally Posted by Rod911 View Post
    I did a very rudimentary test on the weekend testing out the capacity of my 18650 cells and the waterproofness of my T10L.

    The ingredients were:

    • EagleTac T10L
    • Soshine 2800mAh
    • Ultrafire 2600mAh (the "pink/red' set, but the more expensive version)
    • TrustFire 2400mAh "red and black" set
    • A bucket of water

    According to EagleTac, the T10L is supposed to do 2 hours in high mode. So my goal was to see if I can keep the light powered on high for 2 hours.

    So I turned the light on and dropped it in a bucket of water and the results are as follows:
    [CODE]
    Battery | Starting Voltage | Duration
    ---------------------------------------------------
    Soshine | 4.09v | 1 hour 55 mins
    Ultrafire | 4.13v | 1 hour 51 mins
    TrustFire | 4.12v | 1 hour 59 mins
    [/CODE]As a side note, once the light turned off, I checked their voltages. Both the Soshine and Ultrafire cells had a 0v reading, whereas TrustFire had 3.29v and 3.36v after 30 minutes of rest. The Soshine and Ultrafire cells both were able to be charged full again, with what seems, to be no ill affects.
    I guess the Soshine cell will have similar runtime to TrustFire if it's also charged to 4.12V. I hope those TF cells will have consistent quality as it's been tested.
    I have a pair of gray TF protected, advertised 2400 mAh, but when compared with AW17670 1600mAh cells, they have only ~1900-2000mAh true capacity and the protection circuits just don't work :/

  28. #28
    Flashaholic* berry580's Avatar
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    Default Re: 18650 Battery Test

    Quote Originally Posted by Rod911 View Post
    Those were the same TrustFires that I tested. There are two red/pink Ultrafire varieties over in DX, and the set I bought were these.

    As for the red/pink Ultrafires used in the Light-Reviews test, they were bought off from KD according to Mev in that thread. Therefore, I have no idea whether they are the same version that I got from DX, or this version which is the cheaper, and allegedly by DX themselves, has an incorrect capacity label.
    I was actually replying to the OP, but thank you for replying anyway, and a SPECIAL THANK YOU for showing me (and others) the link to that 18650 shoot out.
    That'll help a lot... never knew the pink TF 18650 are so good... =O
    I'll know what to buy next time, as I just ordered a couple of UF and TFs from DX yesterday. *sigh*


    Quote Originally Posted by jirik_cz View Post
    In fact, the cut off is even lower, somewhere around 2.5V. But the cell voltage will bounce up after you remove the load.
    hhmm....... I've never used a 18650 till its triggered to turn off automatically before, its my first time with the J-III PRO Ti.
    But i thought going too low isn't good for the battery, how low is too low? As i always thought its not good to go under 2.75V
    I once had an unprotected RCR123 on my iTP C6T, and apparently one battery drained faster than the other and one of it just went too low and couldn't be recharged again...

    Quote Originally Posted by dudu84 View Post
    I guess the Soshine cell will have similar runtime to TrustFire if it's also charged to 4.12V. I hope those TF cells will have consistent quality as it's been tested.
    I have a pair of gray TF protected, advertised 2400 mAh, but when compared with AW17670 1600mAh cells, they have only ~1900-2000mAh true capacity and the protection circuits just don't work :/
    Well clearly their quality isn't that consistent. Otherwise no one would be buying AW's.
    As you could see, runtimes with AW and UF/TF aren't different enough to explain the magnitudes of the price differerentials. So i suppose what's left is brand image, QC, and maybe AW batteries uses better materials hence safer and degrade at a lower rate (?).
    Last edited by berry580; 10-06-2009 at 07:15 AM.
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  29. #29
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    Default Re: 18650 Battery Test

    Quote Originally Posted by berry580 View Post
    Well clearly their quality isn't that consistent. Otherwise no one would be buying AW's.
    As you could see, runtimes with AW and UF/TF aren't different enough to explain the magnitudes of the price differerentials. So i suppose what's left is brand image, QC, and maybe AW batteries uses better materials hence safer and degrade at a lower rate (?).
    I believe initial capacity doesn't mean everything. A good quality cell will retain decent capacity after hundreds of cycles but "cheap" batteries will store significantly less energy after some use, can be as few as <20 cycles? <50 cycles?

    The new TF and UF 18650s came out not long ago so there is no concrete data on them yet, but I do hope they hold up well after ~100 cycles or so, they'd have great values for the money

  30. #30
    Flashaholic* old4570's Avatar
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    Default Re: 18650 Battery Test

    Ok , replaced the missing runtime graph ...

    The graphs I had for max current delivery are gone , but I did list them .

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