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.