4 PCS Tenergy Li-Ion 18650 Cylindrical 3.7V 2200mAh Flat Top Rechargeable Batteries w/ PCB

Note: If using for Flashlights that uses 2 Cylindrical 18650 Li-Ion Cells, see our Buttop Top versions for better compatibility:
Tenergy 3.7v Li-Ion 18650 2600mah Rechargeable Battery (Button Top) w/ PCB
Tenergy 3.7v Li-Ion 18650 2200mah Rechargeable Battery (Button Top) w/ PCB

Features and Benefits:

* Unique and New! With PCB protection!
* Li-Ion 18650 cylindrical rechargeable batteries with Internal Voltage protection PCB!
* Internal PCB protection prevents under-voltage at 2.5V and over-voltage at 4.25V.
* Unique PCB design and patent pending.
* 3.7V 2000mAh high capacity
* Higher energy density and lower weight than other rechargeable batteries
* Manufactured under ISO9001-2000 to assure quality
* Battery tested based on International Electrotechnical Commission (IEC) standard to ensure capacity, quality,and life time

Applications

* Lighting or other device needs 3.7V power
* Building portable power device needs high energy density and low weight

Product Specifications:

* Capacity* Nominal 2000 mAh, Minimum 1950 mAh
* Internal PCB protection prevents under-voltage at 2.5V and over-voltage at 4.25V. UNIQUE INTERNAL PCB!
* Dimensions:
Diameter 18+/-0.2 mm
Height 66+/- 0.2mm
* Weight (Typical) Approx. 46 g yes
* Nominal Voltage: Average 3.7V
* Cut-off Voltage: 3.0V
* Internal Impedance: less or equal to 180 milliohm (with PTC)
* Cycle Performance: 90% of initial capacity at 400 cycles
* Cycle life: > 500 cycles
* Charge: Current = 0.5C mA Voltage = 4.2 V End Current = 0.01 mA
* Discharge: Current = 0.5C mA End Voltage = 3.0V
* Max. Charging current: 1.5C ma
* Max. Discharging current 1.5C ma (for continuous discharge)

WARNING

* CAUTION: when working with Li-ion cells, they are very sensitive to charging characteristics and may explode if mis-handled.
* User should have enough knowledge on Li-Ion rechargeable batteries in charging, discharging, and assembly before use.
* Put the batteries in fire-proof container.
* Do not put batteries on wood surface or carpet when charging.
* The battery is/are not suitable for e-cig mod.
* Never leave battery un-attended when charging.
* We are not responsible for damage if there is any modification of the batteries in form, shape, or made into packs.
* We are not responsible for any damage caused by misuse or mishandling of these Li-Ion batteries.