Tenergy 18650

3.7V 2600mAh Li-ion Battery

This high energy density and capacity lithium-ion battery from Tenergy is perfect for flashlights, portable power devices or other devices requiring 3.7 volts. The 3.7 Volt 2600 mAh capacity provides a long lasting, efficient discharge for maximum runtime for your flashlight or other device. The lightweight 18650 cell has been tested by the IEC (International Electrotechnical Commission) standard to ensure capacity, quality, and life span, so there are no surprises. Also, this 18650 has been manufactured under the ISO9001-2000 standard to assure top notch quality. These 18650s supply three times the voltage of 1.2V AA NiMH or NiCd rechargeable batteries. The unique patented PCB design prevents voltages outside of 2.5-4.25 volts

Note: These fully protected cells simplify usage with their integrated PCB. Perfect for your single cell application these cells are not for pack building as doing so will defeat the PCB protection which is matched to the correct voltage on a single cell. If you are building a pack please choose one of our other cells and the appropriate PCB.

• Unique and New! With integrated PCB Protection!
• Lithium Ion 18650 cylindrical rechargeable batteries
• Button top terminal
• Internal PCB protection prevents under-voltage at 2.5V and over-voltage at 4.25V.
• Unique PCB design and patent pending.
• Higher energy density and lower weight than other types 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 needing 3.7V power
• Building portable power device needing high energy density and low weight

• Capacity: Nominal 2600 mAh, Minimum 2450 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 67+/- 0.2mm
• Weight (Typical) Approx. 46 g
• Nominal Voltage: Average 3.7V
• Cut-off Voltage: 2.5V
• Internal Impedance: less or equal to 180 mΩ (with PTC)
• Cycle Performance: 90% of initial capacity at 400 cycles
• Cycle life: > 500 cycles
• Charge: Current = 0.5C, Voltage = 4.2V, End Current = 0.01 mA
• Discharge: Current = 0.5C, End Voltage = 3.0V
• Max. Charging current: 1.5C
• Max. Discharging current 1.5C (for continuous discharge)

• Operation Voltage:
  • Minimum: 1.5V
  • Maximum: 10V
• Excess Charge Detection Voltage:
  • Minimum: 4.2V
  • Typical: 4.25V
  • Maximum: 4.3V
• Excess Charge Release Voltage:
  • Minimum: 4.0V
  • Typical: 4.05V
  • Maximum: 4.1V
• Excess Charge Delay Time:
  • Minimum: 61mS
  • Typical: 77mS
  • Maximum: 93mS
• Excess Discharge Detection Voltage:
  • Minimum: 2.437V
  • Typical: 2.5V
  • Maximum: 2.563V
• Excess Discharge Delay Time:
  • Minimum: 7mS
  • Typical: 10mS
  • Maximum: 13mS
• Excess Current Detection Voltage:
  • Minimum: 0.17V
  • Typical: 0.2V
  • Maximum: 0.23V
• Excess Current Delay Time:
  • Minimum: 9mS
  • Typical: 13mS
  • Maximum: 17mS
• Short circuit Protection Voltage:
  • Minimum: VDD-1.2V
  • Typical: VDD-0.9V
  • Maximum: VDD-0.6V
• Short circuit Protection Delay Time:
  • Typical: 5µS
  • Maximum: 50µS
• Consuming Current:
  • Typical: 3µA
  • Maximum: 6µA
• Standby Current:
  • Typical: 0.3µA
  • Maximum: 0.6µA
• Circuit Impedance:
  • Typical: 60µΩ
  • Maximum: 70µΩ