Efest 18650 3000mAh 20A IMR Flat Top Battery
Item #: EF-4337 |
Backordered: Estimated Available August 10th, 2026
(1) Read a Review / Write a Review
| Quantity | Price/Ea. |
|---|---|
| 5-24 | $13.45 |
| 25-49 | $11.96 |
| 50+ | $10.47 |
Specs
Product Specifications for Efest 18650 3000mAh 20A IMR Flat Top Battery
Specifications:
| BM Part #: | EF-4337 |
|---|---|
| Voltage: | 3.7 Volt |
| Capacity: | 3000 mAh |
| Terminals: | Flat Top |
| Type: | Li-Ion |
| Battery Size: | 18650 |
| Length: | 2.57" |
| Diameter: | 0.73" |
| Shipping Weight: | 0.15Lbs (2.4 oz) |
| Warranty: | 60 Day Return |
Features:
- One (1) Efest lithium ion flat top 18650 battery.
- Perfect for vaping devices. Safe, powerful, and good performance.
- Very stable in extreme discharge applications.
- Popular in power packs, high-output flashlights, BMS's, and circuit boards.
- Continuous Discharge Rating (max): 20A (35A pulse)
- Discharge cut-off Voltage: 2.5 Volt
Description
Product Description
Efest rechargeable lithium batteries are perfect for vaping devices, providing a safe, powerful performance. It is very stable in high-drain applications.
This battery is also popular in power packs, high-output flashlights, BMS's, and circuit boards.
Certified by CE, RoHS, FCC, and MSDS. High safety performance and environmentally friendly material.
Reviews
Customer Reviews
What our Customers are saying
Battery
by Jacalyn Hutchison on February 20, 2026
I ordered a battery for my vape and when it came in it wouldn’t charge. Contacted battery mart and they quickly sent me a new one. This one charges great. Battery mart is great, professional and quick with response to emails and orders. Will order from them again.
Jacalyn Hutchison
Would recommend to a friend?
Yes

