POTV - Your vaping community

Wanting to join the rest of our members? Why not sign up today!

Register
  1. The POTV Charity Fundraising Event for 2019 is go! Check out the prizes and make your donations here.
    Dismiss Notice

Batteries 30A, 20A??

Discussion in 'Everything ECigs' started by andyp300, Aug 11, 2019.

  1. andyp300

    andyp300 Postman

    Joined:
    May 11, 2016
    Messages:
    59
    Likes Received:
    16
    Hello,

    could anyone enlighten me about battery discharge. I have looked it up online, but I am failing to grasp the concept.


    Which batteries are best for vaping 30 A, 25 A or 20 A?

    Is there a rule of thumb, the higher the amps the better the battery???

    Thanks in advance
     
  2. StrawberryRipple

    StrawberryRipple Veteran

    Joined:
    Jun 2, 2017
    Messages:
    7,822
    Likes Received:
    4,279
    Depends how many amps you're intending to draw from them?
     
    • Like Like x 1
  3. smplmind

    smplmind Postman

    Joined:
    Jul 22, 2016
    Messages:
    594
    Likes Received:
    282
    The general rule of thumb would be the higher the Amp limit the lower the capacity so these two should be considered together. you could check out some of the info from (battery) Mooch who has lots of tests and videos on batteries.
     
    • Like Like x 1
  4. oldhippydude

    oldhippydude Achiever

    Joined:
    Apr 6, 2014
    Messages:
    4,901
    Likes Received:
    3,542
    If you vape at high watts you need high amps and if you vape at low watts you can use a lower amp battery.
     
  5. Leni

    Leni Achiever

    Joined:
    Feb 2, 2017
    Messages:
    4,414
    Likes Received:
    3,872
    It will depend on the style of vaping which will suit your needs best. It’s the Conitinuous discharge rate you want to be looking, not the pulse rating. As above, lower Amps tend to give more Mah, so more time vaping, but only if you’re vaping within the safety limits of the Amps.
     
  6. oldhippydude

    oldhippydude Achiever

    Joined:
    Apr 6, 2014
    Messages:
    4,901
    Likes Received:
    3,542
  7. Haze

    Haze Postman

    Joined:
    Jan 8, 2016
    Messages:
    244
    Likes Received:
    87
    Go binge watch Battery Mooch’s Youtube channel and all your questions shall be answered.
     
  8. speedfreek67

    speedfreek67 Achiever

    Joined:
    Jan 15, 2017
    Messages:
    3,577
    Likes Received:
    3,809
    If you are using a regulated device, then you need to consider what wattage you vape at, and the number of batteries in your device, to understand what batteries are suitable.

    There is a formula to calculate this, and a few factors to consider in the calculation.

    With a regulated device, more strain is put on the batteries as their charge gets lower. A fully charged battery holds 4.2 volts, and most devices tell you to recharge by the time the battery drops to 3.2 volts. If you don't know the voltage where your device cuts off, then you can use 3 volts.

    No device is 100% efficient. There are current losses as the electricity goes out of the battery, through the circuit board and into your atomiser. Some devices are 95% efficient, some 90%, most are at least 85% efficient so we can use that figure, in the form 0.85.

    On to the formula then.

    Watts/Battery Cutoff voltage/Number of batteries/Device efficiency = max amps drawn per battery.

    So, if you are vaping at 60 watts on a single battery device:

    60/3/1/0.85 = 23.52 amps.

    You need a battery with a constant discharge rating of at least 25 amps.

    If you are vaping at 100 watts on a dual battery device:

    100/3/2/0.85 = 19.6 amps.

    You need batteries with a constant discharge rating of at least 20 amps.

    If you know the battery cutoff voltage and efficiency rating of your device, use those figures instead for a more accurate calculation - the above are conservative figures, used to give a good safety margin.
     
    #8 speedfreek67, Aug 24, 2019 at 12:00 PM
    Last edited: Aug 24, 2019 at 12:17 PM
    • Like Like x 1
  9. SirLugg

    SirLugg Legend

    Joined:
    Jan 31, 2016
    Messages:
    11,186
    Likes Received:
    13,013
    What he said.

    In a regulated it's all down to the wattage. Plain and simple.

    Tl:Dr Samsung 25r/Sony VTC5a and 6a are my cells of choice. These Molicell P26 (?) are getting a lot of love too but I've not tried them so can't comment.
     

Share This Page