Lithium Ion (Li-ion) 18650 3.7V 4800mAh Rechargeable Battery

With tremendous capacity and value, the Ultrfire 4800mAh 18650 is a high powered li-ion battery that is perfect for demanding electronics such as tactical LED flashlights. These batteries feature 3.7 Volts of power and a top of the line 4800mAh capacity that will keep high drain electronics running longer than competing power sources. Combined with reliable manufacturing quality and bulk value pricing, the Ultrafire 18650 is one of the best deals when it comes to li-ion power.

PCB Protected
Equipped with the latest technology for complete safety

 

Each Ultrafire 18650 is outfitted with a uniquely designed PCB (printed circuit board) that functions as the brain of the battery, regulating output and intake of electrical charge. Thanks to the circuit board the battery is always safe to use and charge, as it will cut off the battery if the voltage drops below 2.5V or exceeds 4.25V. You can rest assure that your battery will perform perfectly every time since it's PCB protected!

 

Features & Benefits

• Lithium Ion 18650 cylindrical rechargeable battery
• Internal PCB protection prevents under voltage (2.5V) or over-voltage (4.25V))
• Higher energy density than competing rechargeable batteries
• Manufactured under ISO9001-2000 to assure quality
• International Electrotechnical Commission (IEC) standard tested to ensure capacity, high-quality and great lifespan
• Great for LED flashlights and high drain devices

Specifications

• Capacity: 4800mAh
• Nominal Voltage: 3.7V
• Cut-off Voltage: 2.5B
• Internal Impedance: ≤ 180 Milli-Ohms
• Cycle Performance: 90% of initial capacity at 400 cycles
• Charge Cycles: 500
• Charging Current: 0.5C (~1500mA) Voltage = 4.2 V End Current = 0.01 mA
• Discharging Current: 0.5C (~1500mA) End Voltage = 3.0V
• Diameter: 18.6mm * 66.5mm
• Weight: 25g

* Note: These high capacity cells have a larger diameter than standard 18650 batteries and may not fit all flashlights. Please verify dimension of flashlight or device.

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