Which 18650's should I go with?

Discussion in 'Battery Junkies / Chargers' started by gamecockfan04, Mar 10, 2019.

  1. gamecockfan04

    gamecockfan04 Bronze Contributor Member For 3 Years Member For 2 Years

    Blog Posts:
    0
    Joined:
    Nov 10, 2016
    Messages:
    302
    For dual mod, normal wattage between 60-65.
    Lots of threads here and got tired of searching:sad:.
     
  2. BobsHere

    BobsHere From Wherever VU Donator Gold Contributor Member For 2 Years

    Blog Posts:
    0
    Joined:
    Jul 10, 2017
    Messages:
    2,607
  3. Jinx'd

    Jinx'd Platinum Contributor Member For 1 Year

    Blog Posts:
    0
    Joined:
    Oct 22, 2018
    Messages:
    7,693
    I have moli's they are very nice. liionwholesale.
     
    [email protected] and SteveS45 like this.
  4. shawn.hoefer

    shawn.hoefer Gold Contributor Member For 4 Years

    Blog Posts:
    0
    Joined:
    Feb 8, 2015
    Messages:
    3,605
    If you're truly not exceeding 65 watts, Samsung 30Q, LG HG2, and Sony VTC6 will give a bit more run time at 3000mAh than the higher amperage 2600mAh Molicels.
     
    Theboss, SpectoVia and SteveS45 like this.
  5. Wb80

    Wb80 -DIY-demon- VU Donator Gold Contributor Member For 1 Year

    Blog Posts:
    0
    Joined:
    Feb 7, 2019
    Messages:
    2,462
    Question. When running a dual bat mod. Is it a total of 2x whst a single bst ssus. So if its a 300mah 20a bat would it be as total of 40a 6000mah?
     
  6. shawn.hoefer

    shawn.hoefer Gold Contributor Member For 4 Years

    Blog Posts:
    0
    Joined:
    Feb 8, 2015
    Messages:
    3,605
    No. Most dual 18650 are built with a series connection. Two 3000mAh 20A 3.7V in series would yield 20A 3000mAh 7.4V. Two 3000mAh 20A 3.7V in parallel would yield 6000mAh 40A 3.7V. All of those numbers are great on paper, but do not take into account any voltage drop through the mod or atomizer or any wizardry performed by a regulated mod's board.
     
    SteveS45 and Wb80 like this.
  7. Wb80

    Wb80 -DIY-demon- VU Donator Gold Contributor Member For 1 Year

    Blog Posts:
    0
    Joined:
    Feb 7, 2019
    Messages:
    2,462
    So wats better, higher mah or amps. I need bats for new mod. I want good bat life and the mod maxes out at 150w. Though i rarely go over 80
     
  8. SteveS45

    SteveS45 Diamond Contributor Member For 4 Years ECF Refugee

    Blog Posts:
    0
    Joined:
    Mar 25, 2016
    Messages:
    23,830
    Higher mAh = more run time depending on how many watts/amps you are pulling. The mAh is storage capacity......

    [​IMG]
     
    shawn.hoefer likes this.
  9. shawn.hoefer

    shawn.hoefer Gold Contributor Member For 4 Years

    Blog Posts:
    0
    Joined:
    Feb 8, 2015
    Messages:
    3,605
    If you were running very low builds at higher wattages - say a .12Ω max mesh coil at 130 watts - you'd be far better off with a higher amp rating. Ohms law tells us that this configuration will take roughly 33 Amps. That's outside the continuous discharge (CDR) rating of any currently available 18650, but most regulated mod provides protections against any serious problems in that regard.

    If you're running a higher resistance build at lower wattages - say a 0.5Ω coil at 60 watts - you're better served with a higher mAh rating for longer run times. Again with the ohms law... Only around 11 amps pulled.

    There is an inverse relationship between mAh and Amps in LiIon cells. The more mAh, the lower the CDR, the higher the CDR, the lower the mAh.

    At present, the best CDR is 30Amps at 2000mAh (Samsung 20s). The best mAh is 3000 at 20Amps (LG HG2).

    As a general rule, any 15 Amp rated cell can be used up to 45 watts. Two 15 Amp cells up to 90 watts. 20 Amp cells up to 60 and 120. 30 Amp cells up to 90 and 180. For higher power, use 3 cells (like the Wismec Reuleaux line).

    As you seem to be new to batteries, I recommend you Google "battery Mooch". Mooch is a battery tester extraordinaire and typically tests and post the results of said tests on the interests. He maintains a chart of all the latest and greatest batteries, too.
     
  10. Wb80

    Wb80 -DIY-demon- VU Donator Gold Contributor Member For 1 Year

    Blog Posts:
    0
    Joined:
    Feb 7, 2019
    Messages:
    2,462
    I think i have some kastar 2800mah 35a bats sittn somewhere in the toolbox. Worth using or crap. Never heard of the brand and dont even know how i got them.
     
  11. Wb80

    Wb80 -DIY-demon- VU Donator Gold Contributor Member For 1 Year

    Blog Posts:
    0
    Joined:
    Feb 7, 2019
    Messages:
    2,462
    So then 2 hg2 should serve me well all day at 75w or lower arround .3 ohms
     
    shawn.hoefer likes this.
  12. Wb80

    Wb80 -DIY-demon- VU Donator Gold Contributor Member For 1 Year

    Blog Posts:
    0
    Joined:
    Feb 7, 2019
    Messages:
    2,462
    I am not a high w vaper but im not like low w either
     
  13. shawn.hoefer

    shawn.hoefer Gold Contributor Member For 4 Years

    Blog Posts:
    0
    Joined:
    Feb 8, 2015
    Messages:
    3,605
    Crap.

    These are rewraps. There are only a handful of LiIon battery manufacturers on the planet... Sony, Samsung, Sanyo/Panasonic, LG, Molicel (?). Anything other than these brands are lower grade cells auctioned off from one of these manufacturers. Theres are no rules or regs that I am aware of about how cells are labeled once purchased. So Master could've purchased 1500 mAh 5Amp batteries and slapped that ridiculous 3500mAh 35Amp rating on them.

    Always buy authentic cells from a reputable vendor like illumn.com, liIonWholesale.com, or IMRBatteries.com to avoid problems. Note that eBay and Amazon are not considered reputable vendors, regardless of what the battery wrappers say... There are a lot of counterfeit cells out there.
     
    Wb80 likes this.
  14. shawn.hoefer

    shawn.hoefer Gold Contributor Member For 4 Years

    Blog Posts:
    0
    Joined:
    Feb 8, 2015
    Messages:
    3,605
    Yup.
     
    Wb80 likes this.
  15. Wb80

    Wb80 -DIY-demon- VU Donator Gold Contributor Member For 1 Year

    Blog Posts:
    0
    Joined:
    Feb 7, 2019
    Messages:
    2,462
    Awsome. Thank you.
     
  16. gsmit1

    gsmit1 Platinum Contributor Member For 2 Years

    Blog Posts:
    0
    Joined:
    Mar 14, 2018
    Messages:
    5,356
  17. gsmit1

    gsmit1 Platinum Contributor Member For 2 Years

    Blog Posts:
    0
    Joined:
    Mar 14, 2018
    Messages:
    5,356
  18. gsmit1

    gsmit1 Platinum Contributor Member For 2 Years

    Blog Posts:
    0
    Joined:
    Mar 14, 2018
    Messages:
    5,356
    Battery life isn't as important to me personally.
     
  19. JBT81

    JBT81 baby empath VU Donator

    Blog Posts:
    0
    Joined:
    Mar 16, 2019
    Messages:
    68
    i would have to recommend Sony (?) VTC5A or VTC6A (dunno where you could find 6As however) and LG (?) HB6 if you want a battery that can handle any build you can set up in an atty without worries about heat or other troubles one may find with weaksauce batteries.

    note: the battery brand names might be switched or just plain incorrect, but the names of the type of batteries themselves (VTC5A or HB6) are correct and should be readily searchable online

    hope you find what you need OP
     
  20. JBT81

    JBT81 baby empath VU Donator

    Blog Posts:
    0
    Joined:
    Mar 16, 2019
    Messages:
    68
    also, a (seemingly) reliable store online is 18650batterystore.com

    i don't believe i've ever gotten rewraps and you get free cases for each pair of batteries you buy!
     
  21. ~Don~

    ~Don~ Platinum Contributor Member For 3 Years

    Blog Posts:
    0
    Joined:
    Apr 5, 2016
    Messages:
    5,946
    Just use this calculation for regulated mods


    Wattage/battery count/low voltage/mods efficiency

    Example: Dual Battery mod @60w

    60w/2=30/3.2(Low Voltage)=9.375a/.85(mods efficiency)= 11.02a = Any 15a CDR rated battery is adequate in this application

    Certain things change in this calculation... low voltage setting... some mods have a lower setting or you can set that low voltage setting (Think Dicodes) and that will change the overall calculation.

    Example 2: Dual battery mod @120w

    120/2=60/3.2=18.75/.85=22.05a In this example of 120w usage, you'd want to utilize batteries with at least a 22a rating...


    Example 3: Triple battery mod @120w

    120/3=40/3.2=12.5a/.85=14.7a You could utilize a 15a battery again...but you're leaving yourself very little wiggle room in later stages of battery life...I'd use a 20a here ;)




    Now lets say you're using a DNA200 or one of the newer DNA250Cs, these have an efficiency rating of 97%


    60/2=30/3.2=9.375/.97=9.66a

    120/2=60/3.2=18.75a/.97=19.33a

    120/3=40/3.2=12.5/.97=12.89a



    TL;DR

    Watts divided by battery count divided by low voltage cut off divided by mods efficiency = what battery you should use

    Ohm's Law is not used calculating regulated mods
     
    JBT81 and BobsHere like this.

Share This Page

Close This Message