Greg McGee Engineering

Note: This Button Top Version is most suitable for Flashlights that uses Cylindrical 18650 Li-Ion Cells.

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 2600mAh 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 that needs 3.7V power
• Building portable power device needing high energy density and low weight

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
• Never leave battery un-attended when charging
• We are not responsible for damage of 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

Product Specifications

• Capacity* Nominal 2600 mAh, Minimum 2500 mAh
• Internal PCB protection prevents under-voltage at 2.5V and over-voltage at 4.35V. UNIQUE INTERNAL PCB!
• Dimensions:
  Diameter: 19 mm
  Height: 69.5 mm
• Weight (Typical) Approx. 50 g
• Nominal Voltage: Average 3.7V
• Discharge Voltage: 3.0V
• Internal Impedance: less or equal to 130 milliohm (with PTC)
• Cycle Performance: 90% of initial capacity at 400 cycles
• Cycle life: > 500 cycles
• Standard Charge Current: 0.2C (Cut-off Current: 0.01C)
• Fast Charge Current: 0.5C (Cut-off Current: 0.01C)
• Standard Discharge Current: 0.5C (End Voltage = 2.75V)
• Max. Discharge Current: 1.5C

Internal PCB Specifications:

*Note: do not use Button Top version with Tenergy Multifunctional Charger.