Summary of 18650 2600mAh 3C Li ion 3.7V Battery​

The ICR 18650 2600mAh 3C lithium-ion battery delivers high energy density, stable 3C (7.8A) continuous discharge, and over 500 charge cycles. With reliable safety design and wide temperature tolerance, it is well suited for power tools, e-bikes, LED lighting, and custom battery pack applications, while also supporting OEM and customization services.

ICR 18650​ Battery 2600mAh 3.7V Specification

Model: 18650 Lithium Battery

Rated Capacity: 2600mAh

Minimum Capacity: 2550mAh

Energy: 9.26Wh

Energy Density: 185.2Wh/kg

Rated Voltage: 3.7V

Discharge Cut-off Voltage: 2.75V

Charge Cut-off Voltage: 4.2V

Cycle Life: More than 500 cycles

Dimensions: Φ18*65mm

Weight: 50g

Internal Resistance: Less than 40mΩ

Standard Discharge Current: 0.2C (520mA)

Standard Charge Current: 0.2C (520mA)

Max Continuous Discharge Rate: 3C (7.8A)

Max Continuous Charge Current: 1C (2.6A)

Charging Temperature: 0 to 45℃;

Discharge Temperature: -20 to 65℃

Storage Temperature:

• -20℃~25℃: 12 months
• -20℃~45℃: 3 months
• -20℃~60 ℃: 1 month

Key Features – ICR 18650 Battery 2600mAh 3.7 V 9.62 Wh​

🔋 2600mAh High Capacity

Delivers extended runtime for portable electronics, ensuring longer use between charges.

⚡ 3C Continuous Discharge Rate

Supports up to 7.8A output, ideal for high-drain devices like e-scooters, power tools, and LED lighting systems.

🔁 Long Cycle Life

Up to 500 charge-discharge cycles, maintaining more than 80% of original capacity under proper use.

🔐 Advanced Safety Features

Built with high-grade separators and internal safety mechanisms to prevent overheating, short-circuit, or over-discharge.

🌱 Eco-Friendly and RoHS Compliant

Free from hazardous substances and designed to meet global environmental standards.

🧰 Applications of 18650 2600mAh 3C Battery Cell

• Power tools and handheld drills

• Electric bikes and scooters

• Portable medical devices

• LED flashlights and headlamps

• DIY battery pack assembly

• Backup energy storage systems (ESS)

🏭 OEM & Customization Services

We offer full customization of 18650 lithium-ion cells, including:

• Nickel tab spot welding

• Custom BMS or PCM integration

• Battery pack design (1S to 10S+)

• Private labeling or logo printing

Contact us to configure a battery pack tailored to your voltage, current, and size requirements.

❓ FAQ – 18650 2600mAh 3C Lithium Ion Battery

1. What does “3C discharge” mean?

“3C” refers to a discharge rate three times the battery’s capacity. For a 2600mAh cell, 3C equals 7.8A continuous current output.

2. Can I use this battery in a custom battery pack?

Yes! These 18650 cells are ideal for assembling custom battery packs. We offer spot welding, BMS integration, and wiring harness solutions.

3. Is this battery protected or unprotected?

This is an unprotected cell intended for battery pack integration with external PCM/BMS. If you need protected cells, we also supply versions with built-in safety circuits.

4. How should I store the battery long-term?

Store between 20–25°C in a dry environment, ideally at 40–60% state of charge. Avoid high humidity and direct sunlight.

5. Do you provide test reports or datasheets?

Yes. Technical datasheets, UN38.3 test reports, and MSDS documentation are available upon request. Contact us for more info.

Battery 18650 Battery​ Cell List