7.4 Volt 2600 mAh Li-Ion Battery Pack - With Protection IC

Features

1. High Energy Density: The 18650 format offers a high capacity of 2600mAh in a compact size, providing long runtime for portable devices .

2. Integrated Comprehensive Protection: The built-in Protection IC safeguards the battery and the host device against common fault conditions like overcharge, over-discharge, overcurrent, and short circuits, enhancing safety and reliability .

3. Long Cycle Life: Can withstand over 500 charge-discharge cycles while maintaining more than 80% of its initial capacity, ensuring good longevity .

4. Wide Operating Temperature Range: Suitable for use in various environments .

5. Low Self-Discharge: Retains charge for extended periods when not in use .

Specifications

Protection Features (Integrated Protection IC)

The battery pack includes a Protection Circuit Module (PCM) with the following typical protection parameters :

• Overcharge Protection: 4.25V ± 0.025V per cell / 4.28V ± 0.02V per cell (-ΔV detection, cuts off charge circuit)

• Overcharge Release: 3.8V ~ 4.2V per cell (Automatic recovery when voltage drops)

• Over-Discharge Protection: 2.4V ± 0.05V per cell / 2.50V ± 0.10V per cell (-ΔV detection, cuts off discharge circuit)

• Over-Discharge Release: 2.8V ~ 3.2V per cell (Automatic recovery after charging)

• Overcurrent Protection: 3A ~ 6A / 10A ~ 17A (-ΔV detection, cuts off discharge circuit)

• Short Circuit Protection: Immediate trip (e.g., VSS < 0.15V for t > 10ms)

• Temperature Protection: NTC thermistor typically integrated for external monitoring or internal cutoff

• Balance Function: Passive cell balancing during charging to ensure voltage uniformity between cells

Applications

• Consumer Electronics: Cordless phones, portable audio players (MP3), digital cameras, camcorders, handheld gaming devices .
• Portable Lighting: High-lumen flashlights, LED work lights, emergency lights .
• Communication Devices: Two-way radios, intercoms .
• Medical Equipment: Portable monitors, diagnostic devices .
• Industrial Instruments: Handheld scanners, data loggers, measurement devices .
• Other: Toys, laser pointers, small fans, portable printers .

Warnings & Precautions

Charging

• Use a Li-ion Specific Charger: Always use a charger designed for Li-ion chemistry and configured for this battery's voltage (8.4V) and current limits (≤2000mA).

• Avoid Overcharging: The protection IC is a backup. Do not rely on it exclusively. Do not leave the battery charging unattended for extended periods. Disconnect the charger once charging is complete .

• Temperature Monitoring: Charge only within the specified temperature range (0°C to +45°C). Charging outside this range, especially below 0°C, can cause permanent damage .

Discharging

• Avoid Deep Discharge: While the protection IC will cut off discharge, avoid regularly draining the battery until the device shuts off. Do not discharge below the cut-off voltage .

• Current Limits: Do not exceed the maximum continuous discharge current (2000mA or 2600mA as per spec). Exceeding limits causes overheating, damage, and safety risks .

• Temperature Management: Avoid discharging outside the recommended range (-20°C to +60°C). Extreme cold reduces performance; extreme heat accelerates aging and increases risks .

Storage

• Partial Charge Storage: For long-term storage (longer than one month), store the battery at a 30%-50% State of Charge (SOC). Avoid storing fully charged or fully discharged .

• Cool and Dry Environment: Store in a cool, dry place away from direct sunlight and heat sources. Ideal storage temperature is -5°C to +20°C .

• Regular Checks: If stored for very long periods, check the voltage every 3-6 months and recharge if it drops near the over-discharge protection voltage.

Shenzhen Manli Technology Co., Ltd. is a high-tech manufacturing enterprise specializing in the R&D, production, and sales of lithium batteries.
The product portfolio encompasses a wide range of battery types, including high-capacity, low self-discharge, power-type, and high/low-temperature variants. These products are widely utilized in various smart drones, model aircraft, emergency power supplies, lighting fixtures, toys, smart home appliances, and other consumer electronics. The company possesses comprehensive R&D, design, and manufacturing capabilities, a robust quality management system, as well as testing facilities for battery performance and safety compliance. We are fully equipped to meet customers' personalized and diverse needs with tailored solutions, delivering cost-effective and reliable battery products. Our battery products have obtained third-party certifications such as UL, CE, KC, CCC, BIS, CB, PSE, REACH, ROHS, and UN38.3.
We aspire to collaborate with like-minded partners worldwide, leveraging advanced battery technology to strive for a greener, smarter, and more sustainable future.