Shenzhen Resky Electronics Co., Ltd.
| Payment Terms | Western Union,T/T |
| Supply Ability | 50000000PCS/Year |
| Delivery Time | 7-10workdays |
| Packaging Details | Paper box |
| Rated Capacity | 2000mAh |
| Standard Voltage | 7.4V |
| Usage | LED Bicycle Headlamp, Electric Bicycle,Camera |
| Electrolyte | Li-ion |
| Structure | 2s1p |
| Charging Cut-off Voltage | 8.4V |
| Charging Current | 1A |
| Weight | 135g |
| HS Code | 8507600090 |
| Brand Name | RESKY |
| Model Number | LI18650-2S |
| Certification | CE,RoHS,MSDS,Un38.3, IEC62133,ect |
| Place of Origin | China |
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Product Specification
| Payment Terms | Western Union,T/T | Supply Ability | 50000000PCS/Year |
| Delivery Time | 7-10workdays | Packaging Details | Paper box |
| Rated Capacity | 2000mAh | Standard Voltage | 7.4V |
| Usage | LED Bicycle Headlamp, Electric Bicycle,Camera | Electrolyte | Li-ion |
| Structure | 2s1p | Charging Cut-off Voltage | 8.4V |
| Charging Current | 1A | Weight | 135g |
| HS Code | 8507600090 | Brand Name | RESKY |
| Model Number | LI18650-2S | Certification | CE,RoHS,MSDS,Un38.3, IEC62133,ect |
| Place of Origin | China | ||
| High Light | 18650 lithium ion battery pack ，7.4V 2000mAh battery pack ，5C discharge lithium battery | ||
| Model | 18650-2S1P |
| Nominal voltage | 7.4V |
| Nominal capacity | 2000mAh |
| Size | customized |
| Max charge current | 0.5C |
| Charging method | Constant current 0.2C to 8.4V, then charge with constant voltage 8.4V till charge current less than 0.01C |
| Max discharge current | 5C |
| Discharge cut-off voltage | 6V, the over-discharge detection voltage of PCM |
| Operating environment | Charging, 0°C ~ 45°C ; 65±20%RH; Discharging, -20°C~60°C ; 65±20%RH |
| Storage environment | -20°C~45°; 65±20%RH; |
| Lifespan (80% Prime Capacity) | >500times |
Characteristics
Nominal voltage 7.4V, composed of two 3.7V 18650 cells connected in series.
Operating voltage range: 6.0V (discharge cutoff) - 8.4V (full charge voltage), with stable voltage output and no significant fluctuations.
Typical charging cutoff voltage: 8.4V, requires a dedicated 2S lithium battery charger.
Capacity and Discharge Characteristics: Nominal capacity 2000mAh (measured value at 0.2C discharge rate), actual capacity slightly decreases with increasing discharge current.
Continuous discharge capacity at 5C rate is approximately 90%-95% of the nominal value, meeting the battery life requirements under high load.
The discharge curve is smooth, with a slow voltage drop rate in the mid-to-late stages, indicating strong device stability.
Rate and Current Parameters: Continuous discharge rate 5C corresponds to a maximum continuous discharge current of 10A (2000mAh × 5).
Instantaneous pulse discharge current can reach 15A (within 10 seconds), suitable for the instantaneous high power demands during device startup.
Recommended charging rate: 0.5C-1C, i.e., 1A-2A charging current, balancing charging efficiency and cell lifespan.
Cycle and Degradation Performance: Standard charge-discharge cycle life is 500-1000 cycles; the battery reaches its lifespan when capacity decays to 80% of the nominal value.
At high-rate (5C) discharge, the cycle life is approximately 70%-80% of that at 0.5C discharge; proper use can extend lifespan.
Internal Resistance and Consistency: Typical internal resistance of a single cell is 20-40mΩ; the total internal resistance of the battery pack is ≤100mΩ (including connection resistors and protection board).
Good cell consistency; after being connected in series, the current is evenly distributed during charging and discharging, eliminating the risk of overcharging or over-discharging individual cells.
Safety Protection Features: Built-in protection board with overcharge protection (8.45V±0.05V) and over-discharge protection (5.8V±0.1V).
Overcurrent protection threshold: 12-15A; short-circuit protection response time: ≤10ms, preventing excessive current from damaging equipment or battery cells.
Applications:
Small Power Tools: Handheld drills, mini grinders, etc., requiring instantaneous high-power motor drive; the 5C rate ensures sufficient power for tool startup and operation.
Consumer electronics: High-end toy cars, drones, model airplanes, etc., requiring 7.4V voltage to meet motor needs, with a 2000mAh capacity balancing battery life and lightweight design.
Emergency and backup power supplies: Small UPS systems, emergency lighting equipment, high-rate discharge for rapid response to power demands, standardized battery cells for easy maintenance and replacement.
Medical and testing equipment: Portable monitors, small analyzers, etc., requiring stable voltage output and reliable discharge performance to ensure accurate equipment operation.
Product Pictures:
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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