3.7 XL – 650 Mah | High Capacity 3.7 Volt Vape Pen Battery | 4 Colors

starting at: $32.95

(15 customer reviews)


  • 3.7 Volt, perfect for a wide range of oil cartridges
  • Huge 650 Mah capacity for extended usage
  • Lifetime Warranty
  • 510 Thread vape pen battery for use with all cartridges
  • Available in Rose Gold, Rugged Wood Grain, Rugged Black, or in Stainless Steel
  • For Aromatherapy purposes only
  • Not for use with NICOTINE E-LIQUIDS
  • To mix and match colors on multiple packs specify in note section

The 3.7 XL is the next step up from our best selling 3.7 volt vape pen battery.  The increased capacity means less frequent charging and gets you through longer travel days and longer hikes.  The 510 thread is compatible with almost every oil cartridge while the 3.7 voltage works well with original style cartridges or ceramic cell and gives just the right temp for most oils.

Add on and fill a vari-flow ceramic cell cartridge, perfectly matched for this battery Here.

* Does not include cartridge


Additional information

Weight N/A
Number of Vape Batteries

1, 2, 5, 10


Steel, Rugged Black, Rose Gold, Wood Grain, Rugged White

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15 reviews for 3.7 XL – 650 Mah | High Capacity 3.7 Volt Vape Pen Battery | 4 Colors

  1. Destinee H. (verified owner)

    Good stuff

  2. Robert A. (verified owner)

    Easy to use. Easy to charge. Have ordered on two occasions and feel very satisfied with the products. Quality…

  3. Tara J. (verified owner)

    Great customer service. I had an issue with my initial order and they replaced the device immediately. Very easy to reach customer service with a fast resolution. Great product! Thank you!

  4. Harold B. (verified owner)

    Works great.
    Lasts a long time.
    More compact (shorter) than other 650 batteries I have.
    Very satisfied.

  5. Roger (verified owner)

    Awesome product! Thank you!

    • O2VAPE

      Thank you Roger

  6. Chris (verified owner)

    Great product, easy to use, long charge and good for travel.

  7. Dave L. (verified owner)

    Works great every time! Battery lasts forever. Super fast shipping. Will probably order another. Highly recommend

    • Dana E. Shoched

      Thanks Dave, Enjoy!

  8. Robert P. (verified owner)

    A great battery that works seamlessly.

    • Dana E. Shoched

      Awesome! Enjoy Robert!

  9. Dennis D.T. (verified owner)

    Had an issue with the first one I ordered but Customer Service / Tech Support was exceptionally helpful in diagnosing the issue. Within a few business days I had a replacement delivered to me. This battery performs very well and I am pleased with the product and the support from O2 Vape.

    • Dana E. Shoched

      Thank you Dennis and welcome to the family 🙂

  10. Ryan (verified owner)

    Amazing! This is my first vape and I love it

    • Dana E. Shoched

      Thanks Ryan welcome to the O2 family !

  11. Keri O. (verified owner)

    Don’t hesitate to purchase this! Even an idiot newbie to the cart world can use it. You screw in the cart, and then puff.
    There’s no button, nothing you have to press. You just take a pull. It’s awesome!
    Sleek and super sexy, this device is perfect for those .5 carts that are a bit shorter.

  12. Carl (verified owner)

    Better than anything else! I’ve tried 3 other vapes and this is the only one that consistently and easily works. Had an issue with one and customer service replaced it for free. I purchased 2 more to have on hand.

    • Dana E. Shoched

      Thanks Carl !

  13. Kitkat (verified owner)

    This is an amazing battery. It allows me not to have to hold onto a button. Makes a vape cart way easy. It does not work on the thicker oils. Love how long the charge lasts! Amazing device

  14. Andrew (verified owner)

    Very good vape. I got the black, which is matte and cool looking. It’s well-made and easy to use. So far, I’ve tried it on delta 9, delta 8, and HHC (which I’m very fond of). It hits smooth and hard. It might be nice to have voltage adjustment, which you can get on other models for a few bucks extra. The battery life is excellent. With a wall charger, it charges quickly. Highly recommend!

  15. Jose B. (verified owner)

    This mod has a sturdy built compact and powerful although only has one heat setting though 3.7 volts. It’s a more compact and less heavy version the 900 mah xl vari vape so more portable.