Lithium Ion Battery Cell 21700 3.7V 4000mAh Battery for Flashlight/Electric Bicycle

• Customization: Available
• Type: Li-ion Battery
• Cathode Material: NCM
• Model NO.: 21700
• Rechargeable: Yes
• Size: Small
• Discharge Rate: 1c, 3c, 5c
• Shape: Cylindrical Battery
• Electrolyte: Li-ion
• Installation: Packaged
• Nominal Voltage: 3.7V
• Capacity: 4000mAh
• Model: 21700
• Transport Package: Carton Box/Tray
• Specification: 21*70mm
• Trademark: EASTAR
• Origin: China
• Production Capacity: 20000PCS//Month
• Package Size: 20.00cm * 15.00cm * 7.00cm
• Package Gross Weight: 0.780kg

Product Description

Lithium Ion battery cell 21700 3.7V 4000mAh Battery for EV/e-bike

 Basic characteristics:

Typical Capacity	4000mAh
Minimum capacity	3800mAh
Nominal voltage	3.7V
Standard Charge	CC/CV,0.2C5A, 4.20V
Standard Discharge	CC,0.2C5A, 3.00V
End-of-charge Voltage	4.20V±0.05V
End-of-charge Current	0.01C5A (At CV mode)
End-of-discharge Voltage	3.00 V
Charging Time	8.0hours(standard charge)
Quick Charge Current	2000mA
Quick Discharge Current	6000mA
Max Discharge Current	60000mA
Weight	Approx:52±1g
Operating temperature	Charging: 0ºC~45ºC Discharging:-20ºC~60ºC
Storage temperature	-5ºC~35ºC
Storage Humidity	≤75% RH
Appearance	Without scratch, distortion, contamination and leakage

Feature:

Being the  highest  energy battery

stable dicharge voltage

Longer service life ,over2000 cycles with capacity stayingat 80%min /discharge Cycle

 No memory effect

safer and environmentally friendly

wide temperature range:available for use when the temperature ranges from -20~70centigrade

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About Our Company:

Established in 1997, Shenzhen Eastar Battery Co., Ltd. is a professional manufacturer of various batteries. Our products cover a full range of carbon-zinc batteries, alkaline batteries and rechargeable batteries, lithium batteries, lead acid batteries and button cells. As a battery manufacturing group, we have set up two separate factories in Guangzhou and Shenzhen cities respectively for different items. Stressing the importance of quality, with a belief "quality is our life", we invested much on advanced production facilities and testing equipment. Moreover, we have a powerful R&D team and many skillful employees. Based on the ISO9001 standard, we have built up a complete quality control system, which guarantees the quality of products. Furthermore, we always march ahead of technological and quality control trends in the battery field. With a large production capacity, our products are widely exported to many countries in the world. We welcome both ODM orders and OEM projects for completion. If you are interested in any of our products, please contact us for more details. We hope to establish friendly relationships with both domestic and overseas customers.