Features: Cylindrical Li-Ion battery, No memory effect and longer storage life than NiMH Batteries, Lighter weight and higher energy density than any other rechargeable battery Li-Ion 18650 Cylindrical rechargeable batteries 3.7V 2200mAh high capacity High energy density and lower weight than other rechargeable batteries Battery tested based on International Electro Technical Commission (IEC) standard to ensure capacity, quality, and life time Built-in (internal) Safety Functional Layer. You Can Also Buy Universal Battery Charger From Our Store, Click Here to Buy !! You Can Also Buy Dual Universal Battery Charger From Our Store, Click Here to Buy !! Specifications: Brand: GP (Great Power) or UBETTER Model No.: Li-ion 18650 Rated Capacity: 2200mAh (High Drain) Nominal Voltage: Average 3.7V Cut-off Voltage: 3.0V Cycle Performance: 90% of initial capacity at 1000 cycles. Cycle Life: 1000 cycles. Dimension: 64.7mm (H) x 18.2mm (D) Impedance: 100m . Full charge Voltage: 4.2V Rechargeable: Yes Discharge Cut-Off voltage: 3.0V. Charge temperature: 0~45. Discharge Temperature: -20 ~ +60. Charge Current: Standard 1000-2000 mA Charge Time: Standard 3 Hrs, Fast 2 Hrs. Discharge Current: Standard 440 mA, Max 4400 mA. Pass Certificate: CE FCC RoHS, ICR Colour: Blue Weight: 40gm Applications: Lighting or other device needs 3.7V power: Building portable power device that needs high energy density and low weight For laptops, Lithium powered Flashlights, Lasers, Micro controller Projects,Robots,Mp3 players, Mobile phones, Power Banks and other portable power devices. Bluetooth/MP3 Polymer Li-ion; Mobile Phone Polymer Li-ion; Li-ion Button; Notebook Computer/DVD/PDA Polymer Li-ion, torch, laser pointer, camera and etc. Important & Safety Notes: For Best Performance and Longer Life of Battery Always Use Standard Charging. Fast Charging Reduce the Life of Battery (Its Universal Rule for any Kind of Battery). Never completely Discharge This Li-ion Battery (Below 2.75V). Charge Fully Before First Use. Never Use Force to Install (insert) Li-ion Battery. Do Not Expose to Heat. Do Not Short. Do Not Leave Unattended When Charging. Do Not Leave Unattended Immediately After charging. Do Not carry in Your Pocket or Purse Unless They are in a Secure Non-Conductive Carry Case. Do Not Short Positive, and Negative Battery Contacts (Keep Battery That is Not in Use in Plastic Holder). Never Try to Charge (or Discharge) Li-ion Batteries With Battery Chargers That are Not Made for Li-ion Batteries. Do not Store Your li-ion Batteries Fully Charged (For An Extended Period of Time). These are High capacity and High Discharge Current Batteries. If Mishandled / Mistreated, They Can Cause you SERIOUS INJURY. USE AT YOUR OWN RISK ! Package includes: 1 x 18650 3.7v Rechargeable Battery