They came in a box and also came with a safety case to put them in definitely a 10 out of 10 works very well!
Key Features
- 3000mAh nominal capacity optimized for sustained energy delivery
- 20A maximum continuous discharge with 35A pulse capability
- Stable lithium-ion chemistry for consistent high-load performance
- Flat top, unprotected design for battery pack integration
- Built-in low-voltage cutoff to prevent over-discharge
Overview
The Efest IMR18650V1 is a high-capacity 18650 lithium-ion battery designed for applications that require dependable power and moderate-to-high discharge capability. With a 3000mAh capacity and a 20A continuous discharge rating, this cell delivers stable output, efficiency, and reliability across a wide range of demanding electronic applications.
Applications / Uses
- Battery pack assemblies
- Portable power banks
- High-output lighting systems
- Energy storage solutions
- Custom electronic and DIY projects
SPECIFICATIONS
| Manufacturer | Efest |
| Model | IMR18650V1 |
| Size | 18650 |
| Positive Terminal | Flat Top |
| Nominal Capacity | 3000mAh |
| Continuous Discharge Rating | 20A (35A Pulse) |
| Nominal Voltage | 3.7V |
| Maximum Voltage | 4.2V |
| Cut-Off Voltage | 2.5V |
| Protected | No (Unprotected) |
| Rechargeable | Yes |
| Approx. Dimensions | 18.5mm × 65.2mm |
| Approx. Weight | 45.8g |
⚠ Important Safety Warnings
Improper handling or misuse of this lithium-ion battery can result in FIRE, EXPLOSION, or THERMAL RUNAWAY, causing personal injury, property damage, or death. Users must read and follow all safety guidelines before purchase and use. Click here to review the full safety guidelines.
- Critical Warning: Never carry loose batteries in your pocket, purse, or bag. Loose batteries can come into contact with metal objects like keys or coins, causing a short circuit, which may result in severe burns, fire, or explosion. Always store or transport batteries in a protective case.
- Intended Use: This battery is designed for integration into protected battery packs with a Battery Management System (BMS) or Protection Circuit Board (PCB). It is not intended for standalone use or for e-cigarettes, vaporizers, or similar devices.
-
Thermal Runaway: A chain reaction where heat from a failing battery
causes further overheating, potentially leading to fire or explosion.
- Causes: Overcharging, short circuits, physical damage, or exposure to high temperatures.
- Prevention: Use a smart charger, avoid damage, and store batteries in a cool, dry place.
- Storage & Transport: Always store batteries in protective cases to prevent accidental contact with metal objects. Never store loose batteries in pockets, purses, bags, or near conductive materials.
- Inspection: Do not use if the PVC wrapper, terminal insulator, or casing is damaged, dented, leaking, or bulging. Continued use could result in failure, fire, or explosion.
- Charging: Use a smart charger specifically designed for lithium-ion batteries and ensure the charger's voltage matches the battery's specifications. Never overcharge, over-discharge, or leave unattended while charging.
-
Prohibited Activities:
- Do not expose the battery to extreme heat, fire, or liquids.
- Do not short circuit, puncture, crush, or modify the battery.
- Do not charge or discharge beyond the manufacturer’s voltage range.
- Do not dispose of in regular trash—always recycle at approved facilities.
- Emergency Response: If a cell shows signs of thermal runaway (e.g., smoke, swelling, hissing, or heat), stop use immediately and, if it can be done safely, move it to a non-flammable surface (e.g., concrete or sand) away from combustible materials. Lithium-ion cells burn as Class B fires — use an ABC / dry-chemical fire extinguisher, or douse with large amounts of water to cool the cell and prevent the fire from spreading. Do not rely on a small spray; thorough cooling is required, and cells can reignite from residual heat, so monitor the area afterward. (Class D extinguishers are intended for lithium-metal batteries, not lithium-ion.) For any fire beyond a single small cell, evacuate and call emergency services.
Disclaimer
18650Battery.com is not responsible for any damages, injuries, or claims arising from improper use, handling, or failure to follow these safety guidelines. Lithium-ion batteries require strict adherence to all safety protocols. It is the reseller's responsibility to ensure all safety warnings and product guidelines are effectively communicated to customers. Users and resellers assume full responsibility for the safe handling, usage, and distribution of this product.
Customer Reviews
Overall rating: 4.8 / 5 from 174 reviews.
These EFEST batteries are excellent! A fantastic value as well. Long lasting, and powerful!
This is the exact battery I needed, 800Baattery is the only vendor I could find that had it and I got it with no trouble!
Batteries worked like they should. Prices are competitive and the shipping was as quick as expected.
i have been using efest batteries for years and have always been happy with their performance. my oldest batteries have been recharged hundreds of times and are still working fine. i also have a efest charging port, the luc v4, that i have also had for years and is working as good as when i purchased it..
i have been using efest batteries for years and have always been happy with their performance. my oldest batteries have been recharged hundreds of times and are still working fine. i also have a efest charging port, the luc v4, that i have also had for years and is working as good as when i purchased it..
The vendor where I normally Buy efest 3000s was out of them I'll be doing business with you guys from now on thanks great service
Good quality and fast shipping.
These batteries are awesome. Long lasting, holds charge very well. They were shipped quickly and received quickly. They were very well packed and came individually in their own container and came with a container to carry both in. I will definitely buy again from this company.
Fast and easy.
Works well and is a great color lol.
Great service as always!!!! Also, amazing battery!!
Super fast shipping! Love these batteries.! Great price! great experience!!!top shel all the way!!
Awsome
Great battery, quick delivery.
Best prices and quality
Shipped and received no issues
The best battery
They are my favorites in terms of length of charge, longevity and you sent then to me quickly. I will definitely start ordering all my batteries here from now on.
The best battery for vape
excellent battery, very fast delivery, absolutely no issues, will purchase again.
UPS is the worst way to ship! They always deliver my package somewhere else and not at my home. I will no longer be ordering from Amazon. Sorry, I'm sure the product was superior.
Out of the 3 sets I bought 1 is already is failing.
Excellent batteries been using this specific battery type for years
Good batteries. I've used before and they last a long time. I've put my old ones through hundreds of charge deplete cycles and they're still going strong.
I’ve had these previously-that’s why I bought more. They just work the way they should. Good price, quick shipping-especially near Christmas, and they came with 2 individual cases and one double case.
I�ve had these previously-that�s why I bought more. They just work the way they should. Good price, quick shipping-especially near Christmas, and they came with 2 individual cases and one double case.
I usually use hohm life but these are way better. Last longer between charges and more consistent voltage output.
Not bad I think I expected more life span
I love my new batteries. The service was great and the shipping was prombt!
There are many batteries to chose from on the market. Most of them look unfinished or cheap even when they are known brands. Efest batteries look like brand name batteries you buy at big box stores. The batteries work as they should. Why would you trust anything less?
Best batteries ever
Last long in my vape
Way better than my old ones
Nothing special. They do not last any longer than the next. I’m a heavy vaper and have to change batteries 2-3 times daily.
These work well and are long lasting. I'll buy them again when I need them.
Excellent batteries! Even though they are not recommended for it, I use them in my vape, and have for over 2 years with no problems. You just have to practice good safety measures, as you would for using ion lithium batteries in anything. Just follow an ohm calculator, watch the amperage and wattage you use, and you'll be fine. Great power and performance. I get six for my single battery use, and they last nearly a year. They are great quality batteries, highly recommended!
Have been using Efest batteries for many years and have not had any problems in my Mod. Recommend them
Always been my favorite
Always been my favorite