Storacell
Results 1 to 22 of 22

Thread: Xtar 18700 Preview UPDATED RUNTIMES

  1. #1
    Flashaholic* old4570's Avatar
    Join Date
    Feb 2009
    Location
    Melbourne - Australia
    Posts
    2,575

    Default Xtar 18700 Preview UPDATED RUNTIMES



    Xtar 18700

    Got some Xtar 18700's in the post today .
    So lets get right into the crux of these batteries , the extra length . I have personally not found the length to be an issue :

    69.3mm / 69.2mm / 69.2mm / 69.3mm / 69.4mm
    My Ultrafire 502B has the shortest body , and the 18700 fits just fine , though Im sure some one will be able to find a light that will not accept these batteries due to there length . But then if you owned a flashlight that was battery challenged , ?? .

    Now the other thought that must come to mind is ? will your charger take these batteries . I own 3 18650 chargers , the Ultrafire WF-139 , DSD and Trustfire TR-001 .





    The longest 18700 only just fits the Trustfire charger , and I mean only just , the DSD charger also can take the 18700 batteries , but bear in mind your flexing the chargers body doing so , and there is just no hope for the WF-139 , the batteries just will not fit , but then we knew the WF-139 was already battery challenged , didn't we ?



    I will start testing the batteries shortly , I have 2 on the charger as I type this , and will start some run time tests when the batteries are charged .
    Pictured is my Solarforce L2 and the 18700 fits with no problems what so ever , and if anything , there is room to spare , and may very well be the case with most lights taking the 18650 .

    Results are in for the 1st test , Current delivery .
    For comparison I have included the AW2600 and the Ultrafire 2600 .


    3 Lights will be used
    Light no 1 = Solarforce L2 - XR-E R2 Factory 3 mode low voltage pill
    Light no 2 = Solarforce L2 XP-G R5 self made pill
    Light no 3 = MTE SSC P7

    Light No 1 = Xtar 1.61A / AW2600 1.61A / Ultrafire 1.61A
    Light No 2 = Xtar 1.79A / AW2600 1.74A / Ultrafire 1.84A
    Light No 3 = Xtar 2.65A / AW2600 2.52A / Ultrafire 2.6A

    As we can see , the Xtar can hold its own in current delivery , so if anyone was worried about internal resistance from the safety features or the quality of the cell itself , next I will start the runtime tests , and these will take a while

    I expect more people will start posting results as testing is underway



    Run time graph Amps



    Run time graph Volts

    Now as far as I can tell , the claimed battery capacity is as close to 2200mAh as can be expected , and those testers with Hobby chargers that can cycle the battery and measure discharge will hopefully confirm this . So far I can say that the Xtar 18700 would be a honest battery .




    For comparison , some previous 18650 Tests .

    I will do another run time test as time permits , hopefully tomorrow some time
    .


    XR-E R2 Single mode Low Voltage Pill




    Ok , the over discharge protection works , the light cut out @ 3v .
    As can be seen , the power curve is much flatter in a lower power consumption light , and after resting the battery , its reading 3.19v .

    One of the other things Ive noticed is the lack of sag after charging the battery . A lot of batteries after being charged to 4.2v will sag to as low as 4.15v after a few hours of rest , not so with the Xtar 18700 , they come of the charger @ 4.2v and as much as 10 hours latter are still measuring 4.2v

    I am currently letting a Xtar18700 , AW18650 , and a Ultrafire 2600 sit for a few days to see how much discharge there will be .

    So far Im impressed with the Xtar18700 , it holds its own in the current discharge , the power curve is good , and the over discharge protection works . The only question at this time is Price , with so many cheap cells on the market , it is some what cut throat out there at the moment , and introducing a new product into a market that is geared more towards quality and durability rather than capacity , well I just hope that Xtar can find a niche in the market at a price that will allow them to fill said niche .

    I will continue to use these batteries in my flashlights over the Christmas break and if there is anything new to report I will update this review .

    I would like to thank Frank from Xtar for making this test possible [ Thank you ]

    And I will come back and update as more information / test results etc become available , this close to Christmas , this might be it for a little while .

    Marry Christmas everyone .

    Matt

    Updated

    Self Discharge after 6 Days

    Both the Xtar and Ultrafire are down to 4.18v after 6 Days , and for the AW fans the AW2600 is still sitting on 4.21v .
    I might leave these 3 cells alone and see how they go in another week or so .

    Last edited by old4570; 12-31-2009 at 03:50 PM.

  2. #2
    Flashaholic* old4570's Avatar
    Join Date
    Feb 2009
    Location
    Melbourne - Australia
    Posts
    2,575

    Default Re: Xtar 18700 Preview

    Reserved for future use !

  3. #3
    Flashaholic* ANDREAS FERRARI's Avatar
    Join Date
    Aug 2008
    Location
    The Great White North
    Posts
    1,028

    Default Re: Xtar 18700 Preview

    Nice review!

    I'm sure more reviews will be in shortly.
    My girlfriend said if I bought one more light she would leave me...........I'm sure gonna miss her.

  4. #4

    Default Re: Xtar 18700 Preview

    A few mm longer but only 2200mah?

  5. #5
    Flashaholic* old4570's Avatar
    Join Date
    Feb 2009
    Location
    Melbourne - Australia
    Posts
    2,575

    Default Re: Xtar 18700 Preview

    Quote Originally Posted by C-Beam View Post
    A few mm longer but only 2200mah?
    Well , these are not intended to be High Capacity Batteries , Xtar is offering them as a heavy duty [ I hate to use the word - TACTICAL ] safe battery that can withstand hard use , I do believe safe for high impact [ Weapons light I would assume ] situations .

    So I guess a Law enforcement/military situation where by a Light might be attached to a 338Lapua or similar , might be the sort of thing Xtar is considering as a suitable market for this battery , or any other use that may damage or kill regular 18650's from hard physical use .

  6. #6
    Flashaholic* old4570's Avatar
    Join Date
    Feb 2009
    Location
    Melbourne - Australia
    Posts
    2,575

    Default Re: Xtar 18700 Preview

    I will hopefully have time to do another run tomorrow .


  7. #7
    Flashaholic* old4570's Avatar
    Join Date
    Feb 2009
    Location
    Melbourne - Australia
    Posts
    2,575

    Default Re: Xtar 18700 Preview UPDATED RUNTIMES

    XR-E R2 runtime included .

  8. #8
    Enlightened supergravy's Avatar
    Join Date
    Oct 2008
    Location
    Oregon
    Posts
    92

    Default Re: Xtar 18700 Preview UPDATED RUNTIMES

    Thanks for the review. Now where can I buy some of these?

  9. #9
    Flashaholic* old4570's Avatar
    Join Date
    Feb 2009
    Location
    Melbourne - Australia
    Posts
    2,575

    Default Re: Xtar 18700 Preview UPDATED RUNTIMES

    http://www.xtarlight.com/en/05-chanp...asp?styleid=59

    Should be able to get them from Xtar

  10. #10
    Flashaholic* old4570's Avatar
    Join Date
    Feb 2009
    Location
    Melbourne - Australia
    Posts
    2,575

    Default Re: Xtar 18700 Preview UPDATED RUNTIMES

    Sorry ...

    http://cgi.ebay.com/2-pcs-XTAR-18700...#ht_1214wt_994

    The batteries are available from the Xtar Ebay shop .

  11. #11

    Default Re: Xtar 18700 Preview UPDATED RUNTIMES

    Is this runtime graph supposed to be overlaid onto the ultrafire battery graphs as an equivalent? http://img101.photolava.com/2009/12/...h-4btc6bbh.jpg?

    $10 apiece isn't bad at all. I like the 3V protection cut off, especially since a lot of the batteries with pcb's don't seem to cut off at all in tests.

  12. #12
    Flashaholic* old4570's Avatar
    Join Date
    Feb 2009
    Location
    Melbourne - Australia
    Posts
    2,575

    Default Re: Xtar 18700 Preview UPDATED RUNTIMES

    Last edited by old4570; 12-19-2009 at 09:40 PM.

  13. #13
    Flashaholic* old4570's Avatar
    Join Date
    Feb 2009
    Location
    Melbourne - Australia
    Posts
    2,575

    Default Re: Xtar 18700 Preview UPDATED RUNTIMES

    1st of Jan 2010 . Self Discharge test .

    Xtar 18700 = 4.17v
    Ultrafire = 4.17v
    AW 2600 = 4.21v

    Looks like the picture host is not happy with the traffic .
    I will try and repost ASAP .
    Last edited by old4570; 12-31-2009 at 03:23 PM.

  14. #14
    Flashaholic* old4570's Avatar
    Join Date
    Feb 2009
    Location
    Melbourne - Australia
    Posts
    2,575

    Default Re: Xtar 18700 Preview UPDATED RUNTIMES

    Well its been a month or so :
    And this will be the last post on the discharge :

    Ultrafire 2600 = 4.15v
    AW2600 = 4.2v
    Xtar 18700 = 4.16v


  15. #15
    Flashaholic*
    Join Date
    Jul 2008
    Location
    Tucson, Arizona
    Posts
    824

    Default Re: Xtar 18700 Preview

    Quote Originally Posted by old4570 View Post
    Well , these are not intended to be High Capacity Batteries , Xtar is offering them as a heavy duty [ I hate to use the word - TACTICAL ] safe battery that can withstand hard use , I do believe safe for high impact [ Weapons light I would assume ] situations .

    So I guess a Law enforcement/military situation where by a Light might be attached to a 338Lapua or similar , might be the sort of thing Xtar is considering as a suitable market for this battery , or any other use that may damage or kill regular 18650's from hard physical use .

    Any chance you have pics (or can get pics) of the sheathing off the battery, so curious folks can see how they make it durable (might get some people to decide to buy those now).

    Any chance the extra 5mm is because of the anti-impact material?

    Also, any chance you'd be able to devise a device (say that 10 times fast!) to simulate high impact scenario's, so you can tell if it holds up like they say?

    ~Brian

  16. #16
    Flashaholic* old4570's Avatar
    Join Date
    Feb 2009
    Location
    Melbourne - Australia
    Posts
    2,575

    Default Re: Xtar 18700 Preview UPDATED RUNTIMES

    http://www.cpfmarketplace.com/mp/sho...=205884&page=2

    A bunch of people got the batteries , but only one review posted
    Im currently using the ones I got as much as possible , to see how they go long term .

    I,ll see if I can get some heat shrink sleeve to re-sleeve the battery , If I can get some , I will strip one battery ..

  17. #17
    HKJ's Avatar
    Join Date
    Mar 2008
    Location
    Copenhagen, Denmark
    Posts
    6,497

    Default Re: Xtar 18700 Preview UPDATED RUNTIMES

    Quote Originally Posted by old4570 View Post
    A bunch of people got the batteries , but only one review posted
    I did not get batteries for a review, but I got enough to include them in my 18650 roundup.
    My website with flashlight, battery and charger information: lygte-info.
    More than 200 battery reviews and 80 charger reviews.
    Compare 18650 LiIon batteries or smaller (RCR123, 16340, 14500, 10450) LiIon batteries.

  18. #18

    Default Re: Xtar 18700 Preview UPDATED RUNTIMES

    seems like red/black trustfire and red ultrafire are best from the cheaper cells.

    xtar still priced between aw and cheaper ones, so it's probably just in the spot where it will be hard to decide what to get

  19. #19
    Flashaholic* old4570's Avatar
    Join Date
    Feb 2009
    Location
    Melbourne - Australia
    Posts
    2,575

    Default Re: Xtar 18700 Preview UPDATED RUNTIMES

    http://www.candlepowerforums.com/vb/...34#post3326134

    I undressed one for you guys ... Enjoy the naked Xtar 18700

  20. #20

    Default Re: Xtar 18700 Preview UPDATED RUNTIMES

    Quote Originally Posted by old4570 View Post
    http://www.candlepowerforums.com/vb/...34#post3326134

    I undressed one for you guys ... Enjoy the naked Xtar 18700
    that thread is rated xxx

  21. #21

    Default Re: Xtar 18700 Preview UPDATED RUNTIMES

    Anyone had a problem with these cells running hot? WHen powering a cheap T7 Citipower light, they get too hot to handle after 20 minutes on high. They do make the light VERY bright however. WHen using a Ultrafire 3000mah, not so bright but then again, no heat to speak off.

  22. #22

    Default Re: Xtar 18700 Preview UPDATED RUNTIMES

    Maybe the UF batteries are much lower as advertised? I wouldn't recommend any *fire brands or whatsoever.

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •