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Li-Ion 18650 3.7V 2200mAh Battery with Internal PCB Protection

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Product Description

  • Unique and New! With PCB protection!
  • Lithium 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 2200mAh high capacity
  • High 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   


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


  • 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
  • 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 when made into packs
  • We are not responsible for any damage caused by misuse or mishandling of these Li-Ion batteries

Product Specifications

  • Capacity* Nominal  2200 mAh, Minimum 2100 mAh
  • Internal PCB protection prevents under-voltage at 2.5V and over-voltage at 4.25V.  UNIQUE INTERNAL PCB!
  • Nominal Voltage: Average 3.7V
  • Cut-off Voltage: 3.0V
  • Internal Impedance: less or equal to 70 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) 

Internal PCB Specifications:

Parameter       Minimum Tipical Maxmum Unit
Operation Voltage     1.5   10 V
Excess Charge Detection Voltage   4.2 4.25 4.3 V
Excess Charge Release Voltage   4 4.05 4.1 V
Excess Charge Delay Time   61 77 93 mS
Excess Discharge Detection Voltage 2.437 2.5 2.563 V
Excess Discharge Delay Time   7 10 13 mS
Excess Current Detection Voltage   0.17 0.2 0.23 V
Excess Current Delay Time   9 13 17 mS
Short circuit Protection Voltage    VDD-1.2 VDD-0.9 VDD-0.6 V
Short circuit Protection Delay Time      5 50 uS
Consuming Current       3 6 uA
Standby Current       0.3 0.6 uA
Circuit Impedance       60 70 m-Ohm

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