3.7 Volt Li-Ion Rechargeable Battery

3.7V Li-ion Rechargeable Battery

The 3. 7V Li-ion Rechargeable Battery is a robust capacity 18650 battery designed for high-drain devices. With exceptional capacity and value, the Ultrafire 4000mAh 18650 is a high-performance li-ion battery ideally suited for demanding electronics, such as tactical LED flashlights. These batteries provide 3. 7 Volts of power along with an industry-leading 4000mAh capacity that ensures prolonged operation of high-drain electronics compared to alternative power sources. Coupled with dependable manufacturing quality and economical bulk pricing, the Ultrafire 18650 stands out as one of the most advantageous choices for li-ion power.

PCB PROTECTED

Each Ultrafire 18650 is equipped with a specially crafted PCB (printed circuit board) that acts as the brain of the battery, managing the output and input of electrical charge. Thanks to this circuit board, the battery is always safe for use and charging, as it will disconnect the battery if the voltage decreases below 2. 5V or exceeds 4. 25V. You can be confident that your battery will operate flawlessly every time since it is PCB-protected!

Specifications:

• Battery Terminal Type: Button Top
• Capacity: 4000mAh
• Composition: Lithium-Ion
• Nominal Voltage: 3.7V
• Cut-off Voltage: 2.5V
• Internal Impedance: ≤180 Milli-Ohms
• Cycle Performance: 90% of initial capacity at 400 cycles
• Type: 18650 Li-ion Rechargeable Battery
• Charge Cycles: 500
• Color: Varies
• Dimensions: 66. 0 mm x 18. 0 mm
• Weight: 26. 5g
• Battery Shelf Life: 3 Years
• Brand: UltraFire
• Compatible with: Battery-operated devices such as Emergency Lighting, Flashlights, Portable Devices, Power Tools

Features:

• 18650 Lithium-ion Cylindrical Rechargeable Battery
• Internal PCB protection prevents under-voltage (2. 5V) or over-voltage (4. 25V)
• Higher energy density than rival rechargeable batteries
• International Electrotechnical Commission (IEC) standard tested to guarantee capacity, quality, and lifespan
• Ideal for LED flashlights and high-drain devices
• Environmentally conscious
• 100% Brand New

Contents:

• UltraFire 18650 4000mAh 3.7V Li-ion Rechargeable Single Battery