Shenzhen Resky Electronics Co., Ltd.
| Payment Terms | T/T,Western Union |
| Supply Ability | 10000pcs/day |
| Delivery Time | 7-10days |
| Packaging Details | Paper box |
| Rated Capacity | 2600mAh |
| Standard Voltage | 7.4V |
| Usage | Heated Gloves, Heated Insoles, Heating Jacket, bike light, medical device, speakers |
| Cell | 18650 Cells |
| Wh | 15W |
| Connector | Customizeable |
| Weight | 105g |
| Color | Blue, black,ect |
| Shipping | UPS, DHL, FedEx, TNT, by Air, by Sea |
| HS Code | 8507600090 |
| Brand Name | RESKY |
| Model Number | LI-7.4-2600 |
| Certification | CE, RoHS, MSDS, Un38.3,IEC62133,CB,UL,ECT |
| Place of Origin | China |
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Product Specification
| Payment Terms | T/T,Western Union | Supply Ability | 10000pcs/day |
| Delivery Time | 7-10days | Packaging Details | Paper box |
| Rated Capacity | 2600mAh | Standard Voltage | 7.4V |
| Usage | Heated Gloves, Heated Insoles, Heating Jacket, bike light, medical device, speakers | Cell | 18650 Cells |
| Wh | 15W | Connector | Customizeable |
| Weight | 105g | Color | Blue, black,ect |
| Shipping | UPS, DHL, FedEx, TNT, by Air, by Sea | HS Code | 8507600090 |
| Brand Name | RESKY | Model Number | LI-7.4-2600 |
| Certification | CE, RoHS, MSDS, Un38.3,IEC62133,CB,UL,ECT | Place of Origin | China |
| High Light | 18650 lithium battery cell 2600mAh ，3.7V Li-ion battery pack ，7.4V power lithium batteries | ||
| Parameter | Specification |
|---|---|
| Nominal Voltage | 7.4V (two 3.7V 18650 cells in series) |
| Operating Voltage Range | 6.0V-8.4V |
| Rated Capacity | 2600mAh (at 0.2C discharge rate) |
| Charging Voltage | 8.4V standard |
| Charging Current | 0.2C-1C (520mA-2600mA recommended) |
| Discharge Current | ≤1C (2600mA) continuous, 2C (5200mA) peak |
| Cycle Life | ≥80% capacity after 500 cycles, ≥60% after 1000 cycles |
| Internal Resistance | ≤100mΩ (total pack including connections) |
| Safety Thresholds | Overcharge: 8.7±0.05V, Over-discharge: 5.5±0.1V |
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.
Battery packs operate within specific temperature ranges. Malfunctioning temperature control can lead to thermal runaway - a chain reaction causing rapid heat generation, potentially resulting in fire or explosion.
Excessive heat causes battery swelling from internal pressure increases. Severe cases may lead to electrolyte leakage, which is flammable and corrosive, posing fire and chemical burn risks.
Company Details
Business Type:
Manufacturer,Distributor/Wholesaler
Year Established:
2012
Total Annual:
500000-1000000
Employee Number:
20~50
Ecer Certification：
Verified Supplier
Shenzhen Resky Electronics Co., Ltd is a company specialized in manufacturing, sales and marketing of rechargeable lithium battery and related battery packs. Our lithium battery cells and packs products are widely used in portable mobile devices such as Bluetooth headsets, MP3 players, PDAs, Digi... Shenzhen Resky Electronics Co., Ltd is a company specialized in manufacturing, sales and marketing of rechargeable lithium battery and related battery packs. Our lithium battery cells and packs products are widely used in portable mobile devices such as Bluetooth headsets, MP3 players, PDAs, Digi...
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