Ultrafire XSL 18650 2600mah 3.7V Protected Li-ion Rechargeable Battery (Pair)

Ultrafire XSL 18650 2600mah 3.7V Rechargeable Protected Li-ion Battery Pair 

Please note the listing price is for for a pair(2 batteries)

The Ultrafire 18650 2600mah Protected cell 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. 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.

Lightorati's Note: Ultrafire XSL 18650 batteries are good quality protected batteries at lower price. They do not come with any warranty, however they are great value for money and work great.   
 
Features and Benefits:
- With integrated PCB Protection!
- Lithium Ion 18650 cylindrical rechargeable batteries with Button top
- 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
 
Product Specifications:
- Capacity: Nominal: 2600 mAh, Minimum: 2400 mAh
- Internal PCB protection prevents under-voltage at 2.5V and over-voltage at 4.25V.  UNIQUE INTERNAL PCB!
- Dimensions:
        Diameter 18.8+/-0.5 mm
        Height 68.7+/- 0.5mm
- Weight (Typical) Approx. 46 g yes
- Voltage: 3.7V (also called 3.6V and 4.2V)
- Cut-off Voltage: 2.5V
- Internal Impedance: less or equal to 180  milliohm (with PTC)
- Cycle Performance: 90% of initial capacity at 400 cycles
- Cycle life: > 500 cycles
- Charge: Current = 0.5C Voltage = 4.2 V End Current = 0.01 mA
- Discharge: Current = 0.5C End Voltage = 3.0V

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