Lithium Battery Cell 18650 Li-ion Battery Pack 3.7v 7.4V 2600mAh 19.24wh Power Lithium Batteries

The 7.4V 2600mAh 18650 battery pack offers significant advantages in portable heating devices (such as heated gloves, small heated cushions, and handheld heaters).

Advantages as follows:

1.Strong Voltage Adaptability, Matching to Small Heating Devices

No Additional Transformer Module Required: The 7.4V voltage is composed of two 3.7V 18650 cells connected in series (2S structure), perfectly matching the rated operating voltage range of most small heating elements (such as low-power heating wires and PTC heating elements). This eliminates the need for additional boost/buck modules, reducing energy loss and device size, while also lowering circuit complexity and the risk of failure.

Stable Power Output: The series structure provides a stable voltage platform and a slow voltage drop rate during discharge, ensuring stable power output for the heating device. This prevents inconsistent heating effects caused by voltage fluctuations, providing a continuous and uniform heating experience.

2.Balanced Capacity and Battery Life

Moderate Battery Life: The 2600mAh capacity is a mainstream practical capacity for 18650 cells. For small heating devices (typically 5-20W), it can provide several hours of continuous heating time (e.g., a 10W device theoretically lasts about 1.9 hours, and a 5W device about 3.8 hours), meeting the core needs of daily short-term heating (such as outdoor warmth or localized heat therapy).

3.Natural Advantages of 18650 Cell Characteristics

High Standardization and Consistency: The 18650 is a classic specification for consumer-grade cylindrical lithium batteries. Its production process is mature, and the supply chain is well-established, resulting in strong consistency in parameters such as capacity, voltage, and internal resistance.

Compact Size and Excellent Portability: The 18650 cell has a compact size (18mm diameter, 65mm length). Two cells can be packaged together to create a slender or flat structure, adapting to the form factor requirements of portable heating devices (such as wearables and handheld devices).

Strong discharge rate adaptability: Standard 18650 cells can achieve discharge rates of 1C-2C (2.6A-5.2A), with some high-rate models offering even higher rates, fully meeting the current requirements of small heating equipment.

Low maintenance costs and high repairability:

4. Comprehensive advantages in safety and cost

Comprehensive safety assurance: Standard 18650 battery packs typically integrate protection boards with overcharge, over-discharge, overcurrent, short circuit, and over-temperature protection functions, adapting to the temperature variation scenarios of heating equipment and effectively avoiding battery safety risks caused by equipment failures (such as short circuits in heating elements);

High cost-effectiveness: The large-scale mass production of 18650 cells results in lower unit capacity costs compared to customized non-standard batteries. The production cost of assembling battery packs is controllable, helping heating equipment manufacturers reduce product pricing and enhance market competitiveness.