UltraFire UF 17500 1300mAh 3.7V Protected Lithium Ion (Li-ion) Button Top Battery - Bulk

Ultrafire 17500 1300mah 3.6v PROTECTED BUTTON TOP Protected Rechargeable Lithium Battery Li-Ion UF17500Batteries sold individually.The advantage of this cell is that it features a button top making it particularly compatible with many flashlight applications.Rechargeable Lithium batteries are rapidly becoming a very economical way to lower the operating costs of Lithium-Powered flashlights. We offer a number of different options in order to meet any rechargeable needs. These are Protected batteries. These fully protected cells simplify usage with their integrated PCB. a pair of these cells is about the same size as 3 CR123A batteries and can be used as a rechargeable substitute in some lights which use 3 CR123A batteries. These cells are not for pack building as doing so may defeat or damage the PCB protection which is matched to the correct voltage on a single cell - nor can these cells be welded or soldered upon. If you are building a pack please choose one of our other cells and the appropriate PCB.
STRONG>Features and Benefits

• Unique and New! With integrated PCB Protection!
• Lithium Ion 17500 cylindrical rechargeable batteries
• Internal PCB protection prevents discharge below 2.5V and overcharge past over 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
• Lighting or other device needing 3.6V power
• Building portable power device needing high energy density and low weight

Specs

• Capacity: 1300mAh
• Rechargeable for 600-800 times
• Voltage: 3.6V
• Temparature: -40C~60C
• Dimensions:
• Diameter 16.7 +/-0.5 mm
• Height 52.5 +/-0.5 mm
• Maximum charge/drain rate: 1.5C
• Over-charging protection point: 4.2V
• Over-discharge protection point: 2.75V
• Internal resistance: <= 120 mohm
• Protection Kicks In: @2.75V and @4.2V
• Optimal charging temperature: 0~45'C
• Optimal usage temperature: -20~60'C
• Optimal storage temperature: -20~60'C (65% humidity)