Key Features
- 2600mAh nominal capacity for stable, long-duration power
- Protected button top design with integrated PCB
- 5A max continuous discharge (5.2A cell rating, PCB-limited)
- Third-party protection against overcharge, over-discharge, overcurrent, and short circuit
- Extended length design for devices requiring protected 18650 cells
Note: This is a button top protected 18650 battery which is longer than a standard flat top unprotected 18650 battery.
Overview
The Samsung 26J protected 18650 battery is built using an original Samsung ICR18650-26J cell fitted with a third-party button top and protection circuit board (PCB). This configuration provides added electrical protection while delivering consistent 2600mAh capacity for compatible devices. Due to the PCB and button top, this battery is longer than a standard flat top unprotected 18650 and must only be used in devices designed to accept protected cells.
Applications / Uses
- Devices requiring protected button top 18650 batteries
- Flashlights and portable lighting systems
- Battery packs with length tolerance for protected cells
- Low-to-moderate drain electronics
- Backup and emergency power applications
SPECIFICATIONS
| Manufacturer | Samsung SDI Energy Malaysia (Cell) |
| Model | ICR18650-26J (Protected) |
| Size | 18650 |
| Positive Terminal | Button Top |
| Nominal Capacity | 2600mAh |
| Continuous Discharge Rating | 5A Max Continuous (PCB-limited), 5.2A Cell Rating |
| Nominal Voltage | 3.6V |
| Maximum Voltage | 4.2V |
| Discharge Cut-off Voltage | 2.75V |
| Protected | Yes, PCB (Third-Party) |
| Rechargeable | Yes |
| Approx. Dimensions | 18.7mm × 69.7mm |
| Approx. Weight | 46.9g |
| Country of Origin | Malaysia (Cell), PCB China |
| Data Specification Sheet | Samsung 26J Datasheet |
⚠ Important Safety Warnings
While this battery is equipped with built-in protection circuitry to help prevent overcharging, over-discharging, and short circuits, improper handling or misuse can still result in FIRE, EXPLOSION, or THERMAL RUNAWAY, causing personal injury or property damage. Users must read and follow all safety guidelines before purchase and use. Click here to review the full safety guidelines.
- Intended Use: This battery is designed for use in flashlights, headlamps, and similar devices that require a button top configuration. Ensure compatibility with your device before use.
- Protection Circuit Limitations: While the protection circuit provides additional safety, it cannot prevent damage caused by misuse, including exposure to liquids, extreme heat, or physical damage.
- Storage & Transport: Always store batteries in protective cases to prevent accidental contact with metal objects (e.g., keys, coins, tools) that can cause a short circuit. Do not store loose batteries in pockets, bags, or other uncontrolled environments.
- Inspection: Do not use if the battery is dented, leaking, bulging, or if the outer wrapper or button top is damaged.
- Charging: Use a smart charger specifically designed for button top protected batteries. Do not exceed the battery's voltage and current specifications. Never leave the battery unattended while charging.
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Prohibited Activities:
- Do not expose the battery to water, fire, or high heat.
- Do not modify, puncture, crush, or attempt to disassemble the battery.
- Do not use the battery if it becomes unusually hot during use or charging.
- Emergency Response: If the battery overheats, emits smoke, or shows other signs of failure, stop using it immediately. Move the battery to a safe, non-flammable surface (e.g., sand or concrete) and follow emergency protocols.
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.