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3.6V 18650 Lithium-ion batteries have been widely used because of their light weight, large capacity, and no memory effect. Many digital devices use lithium-ion batteries as the power source, although they are relatively expensive. Lithium-ion batteries have a high energy density, and their capacity is 1.5 to 2 times that of nickel-hydrogen batteries of the same weight and has a very low self-discharge rate. In addition, the lithium-ion battery has almost no "memory effect" and does not contain toxic substances, which is also an important reason for its wide application.

The 18650 battery life theory is cyclic charging 1000 times. Due to the large capacity per unit density, most of them are used in laptop batteries. In addition, the stability of the 18650 is very good at work. It is widely used in various electronic fields: it is often used in high-end glare flashlights. Power supply, wireless data transmitter, electric heating clothing, shoes, portable instrumentation, portable lighting equipment, portable printers, industrial equipment, medical equipment, etc.

Brand：CTECHI 
Model：3.6V 3350mAh Li-ion Battery Pack 
Voltage Nominal：3.6V  
Capacity Nominal：3350mAh  

Max. Discharging Current: 1.7A

Max Peak Discharging Current: 3.4A

Charging Voltage: 4.2±0.03V

Standard Charging Current: 680mA (0.2C)

Max. Charging Current: 1.7A

Internal Resistance: <180mOhm
Cell Configuration：1P1S  
Dimensions: 66.5(L)*18.5(W)*21(H)mm 
Weight: 50g  
Brand Choose：LG，Sony，Panasonic，Samsung , Gotion, BYD, EVE and so on a
Cycle life：1000 Times 
Certification: TUV、IEC62133、UL、CE、CB、FCC、RoHS、UN38.3、MSDS, ISO9001 
Delivery Time: 7days (Sample), 12days (More than 1000 pieces), 25days (More than 10000pieces)