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 Li-ion battery pack 3.7v 2600mAh ，cylindrical lithium battery pack 7.4V ，Li-ion polymer battery 19.24wh | ||
Electrical Performance
Nominal Voltage and Operating Voltage: Nominal voltage 7.4V (two 3.7V 18650 cells in series), operating voltage range 6.0V-8.4V, voltage decay is gradual in the later stages of discharge.
Capacity Characteristics: Rated capacity 2600mAh (at 0.2C discharge rate), actual capacity is affected by discharge current, capacity retention is approximately 90%-95% at 1C discharge rate.
Charging Parameters: Standard charging voltage 8.4V, recommended charging current 0.2C-1C (520mA-2600mA), full charge time approximately 1.5-5 hours (varies with charging rate).
Discharge Performance: Continuous discharge current is recommended ≤1C (2600mA), short-term peak discharge current can reach 2C (5200mA), exceeding this will easily lead to overheating and capacity decay.
Cycle life: Under standard charge and discharge conditions, capacity retention is ≥80% after 500 cycles and ≥60% after 1000 cycles.
Internal resistance: The internal resistance of a single cell is typically 20-40mΩ, and the total internal resistance of the battery pack is ≤100mΩ (including connection resistance). Consistency in internal resistance directly affects discharge balance.
Safety electrical thresholds: Overcharge protection voltage 8.7±0.05V, over-discharge protection voltage 5.5±0.1V.
Applications
Electric clippers: Provides sustained power, supporting continuous work for extended periods, suitable for pet grooming, hairdressing.
Electric drill saw: Enhances motor output power by increasing voltage (7.4V) through series design.
Audio equipment
Portable speakers: Stable 7.4V voltage ensures clear sound quality and extends playback time.
Portable electronic products
Laptops: Some models use 7.4V lithium battery packs (e.g., 2S1P combination) as the power module.
Portable Power Bank: High-capacity design supports charging multiple devices.
Energy Storage System: Customizable as a solar/wind energy storage unit, suitable for small-scale energy management.
Medical Devices: Such as portable monitors, requiring high security and long battery life.
Over-heating Risk: The heating mechanism in the battery pack is designed to operate within a specific temperature range. If the heating element malfunctions or the temperature control system fails, the battery can over-heat. Over-heating can lead to a phenomenon known as thermal runaway. In a lithium-ion battery, this can cause a chain reaction where the battery's internal components start to decompose, release heat at an increasing rate, and potentially lead to a fire or explosion. For example, if the temperature sensor fails to accurately detect the battery's temperature and the heating continues unchecked, the battery cells can reach temperatures far above their safe operating limits.
Pressure Build-up: Excessive heat can cause the battery to swell. As the temperature rises, the internal pressure of the battery increases due to the expansion of the electrolyte and the chemical reactions occurring at a faster rate. Swelling not only indicates a potential safety hazard but can also damage the device in which the battery is installed. In severe cases, the battery may leak its electrolyte. The electrolyte in 18650 lithium-ion batteries is often flammable and corrosive. If it leaks, it can cause damage to surrounding components and pose a fire and chemical burn risk.
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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