Another good buy from 18650Battery. Capacity from 3,375 to 3,475mAH. Will be buying more. Thank you.
Key Features
- High-capacity 3500mAh cell optimized for extended runtime
- 10A maximum continuous discharge for stable power delivery
- Consistent voltage profile for efficient energy output
- Flat top, unprotected design for battery pack integration
- Engineered for long cycle life and dependable operation
Overview
The LG MJ1 (INR18650 MJ1) is a high-energy 18650 lithium-ion battery designed for applications that prioritize runtime, efficiency, and reliability. With a 3500mAh nominal capacity and a 10A continuous discharge rating, this cell delivers stable voltage characteristics and consistent performance for sustained power applications.
Applications / Uses
- Battery pack assemblies
- Portable power systems
- Energy storage and backup solutions
- High-efficiency lighting systems
- Electronics requiring long-duration power
SPECIFICATIONS
| Manufacturer | LG Chem |
| Model | INR18650 MJ1 |
| Size | 18650 |
| Positive Terminal | Flat Top |
| Nominal Capacity | 3500mAh |
| Continuous Discharge Rating | 10A |
| Nominal Voltage | 3.7V |
| Maximum Voltage | 4.2V |
| Protected | No (Unprotected) |
| Rechargeable | Yes |
| Approx. Dimensions | 18.30mm × 65.10mm |
| Approx. Weight | 49g |
| Data Specification Sheet | LG MJ1 Datasheet |
⚠ 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: 4.9 / 5 from 24 reviews.
Quality batteries at a great price. Will be purchasing more.
I recently made a large capacity power bank myself, so I bought 10 18650 batteries. After they arrived, I measured each battery and the result was: the capacity was about 3400-3450mAH, and the internal resistance was about 18 milliohms. Very satisfied!
Shipped quick
The order came on time. Batteries were well packed and in good condition. 🤌
Quick ship, seems to be a great product.
The batteries fit and work perfectly. I really appreciate the case that they came in as that makes storage safer and better in general. You're shipping time estimates were wrong in a good way as I received the batteries well before your original arrival date upon purchase. Thank you!
Works as advertised, haven't tested to full drain yet but hopefully they last longer than he last set originally in my harbor freight flashlights!
Arrived Quickly and in Good Condition. Testing indicated they are accurate Capacity and Voltage.
The hurry was on time with no issues
I have a small cheapo hand vacuum. The original battery is labeled 3.7 v, 1200 mAh, 4.44Wh. It ran a coupla minutes before being discharged. Your battery ran it for 15 minutes.....'nuff said.
Seem to be good batteries 🔋 I’ve charged them all up and they seem to be holding charge good.. they do take a lot longer to charge but that’s fine for me if they hold the charge longer for what I’m using it for
Excellent batteries for the money. The bulk LG cells are just about all I use anymore.
Good batteries for cloud defensive rein light
I wanted a battery I can trust, so I’m glad I bought this recommended battery after doing my research.
Great battery
great batteries
Nice
Great battery!
Great product. Fast To ship. Very happy
Great battery, shipping was kinda slow so thankfully i didnt need these rigjt away.
Work great for vaping.
Going on several years with these. So happy with them. Using them on a flashlight and have never let me down.
All good