WARNING: This product contains nicotine. Nicotine is an addictive chemical.

Efest 18650 3500mAh 20A IMR Battery (Pack of 2)

(5 reviews) Write a Review
Bulk Pricing:
Buy in bulk and save
MSRP: $19.99
Our Price $16.81
— You save $3.18
You Save: 16%

Getting More Soon

Frequently bought together:


These very new Efest batteries have a huge 3500 mAh capacity and a 20A max discharge rating.  This is one of the largest batteries available in an 18650 size in terms of capacity. We purchase these batteries directly from Efest, so they are guaranteed authentic Efest products.

We purchase these batteries directly from Efest, so they are guaranteed authentic Efest products.

This battery is sold individually as a single unit.

Efest 18650 3500mAh Battery Specs:

  • Size: 18650 (18.5mm diameter x 65.2mm long)
  • Type: Li-Mn IMR (Rechargeable)
  • Rated Capacity: 3500mAh 
  • Max Discharge Current:  20A
  • Voltage:  3.7V
  • Protected: No
  • Style: Flat Top
  • Weight:  50g 
  • Initial Impedance:  15m
  • Color: Purple
  • Rated storage temperatures:
  • 1 year: -20°C—25°C
  • 3 months: -20°C—45°C
  • 1 month: -20°C—60°C

Efest 18650 3500mAh Battery Package Contents:

  • 1 x Efest IMR 18650 Battery 3500mAh 20A

3500mAh 20A 18650 Battery by Efest by Efest 18650 3500mAh Battery by 18650 Vape Battery by Cheap Efest 18650 Vape Battery Deals by Wholesale to the Public



The products offered by ecigmafia.com are intended for use by responsible adult vaporizer users over the age of 21 (or the legal smoking age in your state). Our products contain nicotine, a chemical known to cause birth defects or other reproductive harm. Nicotine is highly addictive and may be habit forming. Nicotine can be found in E-Liquids and can be dangerous to your health. Please click on the Disclaimer tab for additional warnings and information.

E-liquids should be stored out of reach from children and pets. E-Liquids are not a safer alternative to cigarettes, are not FDA approved and are not designed for use by persons under legal smoking age. E-Liquids may contain 0.0%, 0.3% or 0.6% Nicotine which can be poisonous or even lethal if inhaled or consumed in large amounts.

If you experience any side effects, or possible side effects with Nicotine or E-Liquids, stop using the product immediately and consult a physician. Possible side effects and health issues include, but are not limited to: lung cancer, emphysema, chronic bronchitis, heart disease, stroke and diabetes.

All products containing Nicotine may be poisonous if orally ingested or if it makes contact with your skin. Do not use Nicotine or E-Liquids if you have any underlying medical condition which may be intensified by the products sold. The ingredients in E-liquids may contain small amounts of nuts, gluten, sugar, sweeteners or flavorings. Do not use this product if you are allergic or sensitive to any of the common ingredients in E-liquids, such as Propylene Glycol, Vegetable Glycerin or Nicotine.

Choosing flavors of e-Liquid should be based on your personal liking. The descriptive flavors of e-Liquids are subjective due to the difference in taste buds among e-cigarette users. For the best quality and taste of your e-Liquid, shake well before each use. Please do not drink e-Liquids. If such incident occurs, contact your local Poison Control Center.

WARNING: This product can expose you to chemicals including Benzene, Isoprene, Formaldehyde, Diethylene Glycol, Toluene, Acetaldehyde, Cadmium, Lead, Nickel and N-Nirosonornicotine, which are listed in California’s Proposition 65, the Safe Drinking Water and Toxic Enforcement Act of 1986. The Proposition is designed to protect California citizens and the State's drinking water sources from chemicals known to cause cancer, birth defects or other reproductive harm, and to inform citizens about exposures to such chemicals. For more information go to www.P65Warnings.ca.gov.

For Battery Disclaimer Click Here

View AllClose

Warranty Information

Please Check Our Returns & Warranty Policy Page For More Details!
View AllClose

5 Reviews

  • 5
    Great Battery

    Posted by Darrell Hendrix on Dec 20th 2020

    Great battery. I’ll be buying more. Highly recommended..Fast shipping..

  • 5
    Good Battery

    Posted by Jeff on Sep 1st 2020

    Charges in a reasonable amount of time and lasts all day. Been looking for a decent battery and have been disappointed with many. This one is working quite well and as expected.

  • 5
    Amazing Batteries

    Posted by Jennifer Stevens on Aug 4th 2020

    These batteries are amazing. They not only charge up pretty quick but they last a super long time. Very impressed

  • 5
    Event 18650 3500 battery

    Posted by David Maynard on Aug 1st 2020

    These batteries are amazing .They last at least 20% longer than other high end batteries i gave purchased.

  • 5

    Posted by Shane Patrick Farley on Jun 26th 2020

    Recently bought this, and i love it

View AllClose