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Authentic Nitecore NL2140R 21700 3.6V 4000mAh Rechargeable Li-ion Battery


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Product Type Batteries
Color Yellow
Ports USB Type C
Power & Batteries
Battery Capacity (Mfg Rated) 4000 mAh
Battery Chemistry Li-Ion
Battery Feature Rechargeable
Battery Form Factor 21700
Battery Rated Voltage 3.6 V
Brand Nitecore
Package Type Plain
Package Contents 1*Battery
Total Piece Count 1
Dimensions us | metric
Depth 22.3 mm
Height 77.2 mm
Width 22.3 mm
Product Weight 73 g
SKU 9729743
DATE LISTED 8/10/2020
  • Next Generation 21700 Li-ion Batteries: Featuring long lifespan, high energy density and powerful performance, 21700 Li-ion batteries were first introduced in the electric car industry and are considered to be the future of cylindrical batteries. 
  • Dual Charging Ways Available
    • Via a USB-C charging cable
    • Via an external charger
  • USB-C Charging Indicators
    • Red light on during charging 
    • Green light on when fully charged
  • Ideal for high drain devices: Max 5A continuous discharge current
  • Internal Safety Features
    • Pressure relief valve activates in the event of a rapid temperature increase
    • Innovative anode design with high temperature resistance
    • Microporous barrier protects delicate internal components
    • Built-in PTC to inhibit high current surges
  • High-performance Protective Circuit
    • Automatically protects against overcharge, over discharge and short-circuiting
    • Utilizes a high-quality battery protection IC
    • Utilizes two high-power MOS FETs in the current regulation module for better efficiency and superior output
  • External Safely Features
    • Equipped at both ends with a nickel-plated stainless steel protector ensuring high impact resistance, good electrical conductivity and oxidation resistance
    • Coated with durable metallic film to guard against abrasion
    • Tough plastic circuit board protector
  • Low Cost and Environmentally Friendly: Using a rechargeable Li-ion battery is energy saving to minimize the carbon footprint


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