The costs of running this huge site are paid for by ads. Please consider registering and becoming a Supporting Member for an ad-free experience. Thanks, ECF team.

Bench Test Results: Golisi S35 40A 3750mAh 21700…overrated but performs better than the iJoy 21700

Discussion in 'Batteries and Chargers' started by Mooch, Nov 27, 2017.

Image has been removed.
URL has been removed.
Email address has been removed.
Media has been removed.
  1. Mooch

    Mooch Electron Wrangler Verified Member ECF Veteran

    Supporting member
    May 13, 2015
    While the test results are hard data, the conclusions and recommendations I make based on these tests are only my personal opinion based on my criteria for setting a rating. Carefully research any cell you are considering using before purchasing.

    Testing cells at their limits is dangerous and should never, ever, be attempted by anyone who has not thoroughly studied the dangers involved and how to minimize them.

    If the cell has only one current rating number on it, or if it only says "max" then I have to assume that the company is stating that the cell can be discharged at that current level in any way, including continuously.

    Cell photos: https://imgur . com/a/OZdiB
    (Sorry for the split link but direct links to Imgur do not display properly)


    Bottom Line
    This Golisi cell performed a lot better than the iJoy 40A 3750mAh 21700, especially at higher current levels, but it is overrated.

    I haven’t compared its performance directly against the popular 20700’s and 20650’s but will be doing a shootout with all of them soon. I don’t know which cell Golisi is wrapping for this 21700.

    This Golisi is badly overrated at 40A but is a true 30A cell, running just slightly hotter than the average of other cells at their rating. This can be handled by just rating it at 29A but this cell is within the acceptable temperature range for a 30A rating.

    The wrap says “IMR 21700” but I’m pretty sure this cell doesn’t use the chemistry associated with the IMR model number prefix.

    This cell delivered 3714mAh and 3822mAh in my capacity tests. Since the rating must be lower than what any cell delivers it’s not quite a 3750mAh cell.

    I am rating this Golisi S35 at 30A and 3700mAh.

    Two cells were donated for the purposes of testing by Golisi (www.golisi.com). Thank you!


    Continuous-Current Test Results and Comparison to iJoy 21700
    Golisi S35 40A 3750mAh 21700 Capacity Test.jpg Golisi S35 40A 3750mAh 21700 CC Tests.jpg Golisi S35 40A 3750mAh 21700 CC Tests vs iJoy 21700.jpg


    Pulse-Current Test Results
    Golisi S35 40A 3750mAh 21700 PulseTest.jpg Golisi S35 40A 3750mAh 21700 PulseTest ZOOMED.jpg


    Comments
    • Golisi paid a fee to be moved to the front of the testing queue, which currently has an 10-12 week backlog. This cannot influence my test results as they pay in advance, have no say about what is in this report, and I don’t care if any company never does this or donates batteries again. My reputation is a lot more important than any battery donation or payment.
    • To see how other cells have tested and how hard you can safely push them, check out this link: https://www.e-cigarette-forum.com/forum/blog-entry/list-of-battery-tests.7436/
     
    • Like Like x 15
    • Informative Informative x 4
    • Winner Winner x 1
    • Love Love x 1
  2. sonicbomb

    sonicbomb Vaping Master Verified Member ECF Veteran

    Feb 17, 2015
    1187 Hunterwasser
    Nice one, thank you.
     
    • Like Like x 3
    • Agree Agree x 1
  3. stols001

    stols001 Mistress of the Dark Nicotinic Arts Verified Member ECF Veteran

    Supporting member
    May 30, 2017
    Tucson, AZ
    Thank you, Mooch. :)

    Anna
     
    • Like Like x 3
  4. Heartsdelight

    Heartsdelight Vaping Master ECF Veteran

    Nov 10, 2015
    Thanks Mooch! As always :)
     
    • Like Like x 2
    • Agree Agree x 1
  5. VapeFish

    VapeFish New Member

    Mar 30, 2017
    Thanks a lot, Mooch :thumbs:
     
    • Like Like x 1
    • Agree Agree x 1
  6. Derek Cross

    Derek Cross Senior Member ECF Veteran

    May 16, 2015
    Well I have a squonk mod on the way that accepts 20700's 21700's as well as 18650's so im pretty amped about this one!

    Thanks for the data Mooch!
     
    • Like Like x 3
  7. suprtrkr

    suprtrkr ECF Guru Verified Member ECF Veteran

    Thanks, Mooch
     
    • Like Like x 3
  8. benley73

    benley73 Ultra Member ECF Veteran

    May 2, 2016
    Can these be put up against the 30T,s and such
    since theres a larger price difference between them like double the price for 30T and some others.
     
    • Like Like x 2
    • Optimistic Optimistic x 1
  9. Robin Becker

    Robin Becker Senior Member

    Feb 3, 2018
    Berlin
    • Useful Useful x 1
  10. benley73

    benley73 Ultra Member ECF Veteran

    May 2, 2016
    • Like Like x 2
  11. Robin Becker

    Robin Becker Senior Member

    Feb 3, 2018
    Berlin
    This is Lishen datasheet to this battery:
    Lishen_Spec.JPG
     
    • Like Like x 1
  12. mimöschen

    mimöschen Super Member ECF Veteran

    Jul 15, 2016
    Some pictures of the battery for comparison would be nice;)
     
    • Like Like x 1
  13. Robin Becker

    Robin Becker Senior Member

    Feb 3, 2018
    Berlin
    Ups...I gave them back. I wanted to try them with a LED Lamp I built, but they were too big for me finally...
     
    • Like Like x 1
  14. mimöschen

    mimöschen Super Member ECF Veteran

    Jul 15, 2016
    I got in a brand new pair of these cells yesterday. After going through 10ml of juice each on my Squeezer Mod with a 0.17 coil, my charger still displays 3.6V. That's about equal to my Vapcell 30/40T rewraps.
    On top of that it stays cool even when chain vaping.
    This is obviously not a 12A cell as Robin Becker claims, and so far I'm very pleased with the performance of the Golisi S35. Considering my style of vaping and the price tag, I think I'd rather get a bunch of these cells than the Vapcell 30/40T rewraps.
     
    • Informative Informative x 2
  15. Mooch

    Mooch Electron Wrangler Verified Member ECF Veteran

    Supporting member
    May 13, 2015
    Agreed, it’s not a 12A cell as it operates at around 50°C at 12A....quite cool.
     
    • Like Like x 2
  16. Robin Becker

    Robin Becker Senior Member

    Feb 3, 2018
    Berlin
    What I wrote does not stand n contradiction to your experienece. In fact the vaper Magazin in Germany "Dampfer-Magazin" made a first very positive review on batteries they got directly from Golisi. In their second test (private purchasing) they were surprised to have in some products different values:
    Nachgehakt beim Golisi Akkutest - www.dampfer-magazin.de
    In my case I could for sure identify the battery as Lishen with 3C, but I gave it back just because it was too big for my wishes (a Battery for Halogene lamp). I took finally the NCR20700B that was better for my application.
     
    • Like Like x 1
  17. mimöschen

    mimöschen Super Member ECF Veteran

    Jul 15, 2016
    I purchased my Golisis from Gearbest, and considering their Voltage of 3.8 on delivery, they seemed to be quite fresh from the factory.
    I don't want to insult you, but I just can't second your observations. Not showing any proof doesn't help either. That has some sort of "Geschmäckle";)
     
    • Like Like x 1
  18. Robin Becker

    Robin Becker Senior Member

    Feb 3, 2018
    Berlin
    Well, it is not a matter of observation, but a matter of how the Plus-side of the battery looks like (how many Ventil holes etc.).
    Frankly speaking this Chinese way of first offering good quality of batteries and later change them into another type of batteries, or manufacturer is not new!
    I bought once in Germany from a big retailer a battery of an eBike. This battery was made in China and it was written in the description Cells made in Korea. The first battery had LG Chem cells and the second battery (bought as replacement 3 months later) were Lishen made.
    I was wondering, why Golisi can not do (or does not want to do), what Vapecell is doing (also Chinese) and publishing a complete technical specification? Or just refer to a certain battery they rewrap?
     
    • Like Like x 1
  19. mimöschen

    mimöschen Super Member ECF Veteran

    Jul 15, 2016
    Of course it's not a new practice.
    But my new cells haven't changed. That's all I'm saying.
     
    • Like Like x 1
  20. Mooch

    Mooch Electron Wrangler Verified Member ECF Veteran

    Supporting member
    May 13, 2015
    You have to be very careful when trying to determine which cell is being rewrapped. Top contacts, venting disks, crimp patterns, etc., are often shared across a large number of cells. I often need a loupe and a great deal of time examining things like the shape and radius of the top crimp curve, the surface finish and thickness of the metals in the top contact, the structure of the score lines in the venting disk, the radius of the bottom bend of the can, the tooling marks in the can, and other details like that.

    Quite a few cells out there otherwise look identical.
     
    • Like Like x 2
    • Agree Agree x 1

Share This Page

  1. This site uses cookies to help personalise content, tailor your experience and to keep you logged in if you register.
    By continuing to use this site, you are consenting to our use of cookies.
    Dismiss Notice