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RS50 70A 4950mAh 21700 Battery Power Boost

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January 06, 2026
Category Connection: Full Tab Cylindrical Cells
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Tags:
#21700 rechargeable li ion battery #5000mah lithium ion battery #18650 Li-ion Battery
Brief: This video explains the main functions and practical uses of the RS50 4950mAh 21700 lithium battery in a clear, step-by-step format. You'll see how its 70A continuous discharge and high capacity deliver reliable power for demanding applications like e-bikes, racing scooters, and power tools, while learning about its thermal management and safety features.
Related Product Features:
  • Features an extremely low internal impedance of ≤4mΩ for efficient power delivery.
  • Provides excellent thermal management with uniform current distribution for low heat generation.
  • Offers high capacity of 4950mAh for extended runtime between charges.
  • Delivers high discharge rate of 70A continuous current for high-drain applications.
  • Utilizes stable lithium-ion chemistry for efficiency and low internal resistance.
  • Supports multiple recharge cycles with minimal degradation for long-lasting performance.
  • Maintains stable voltage curve during discharge for consistent power output.
  • Compact 21700 form factor measuring 70.3mm x 21.35mm with 67g weight.
FAQs:
  • What applications is the RS50 21700 battery suitable for?
    The RS50 is ideal for high-demand applications including e-bikes, racing scooters, power tools, robotics, aerospace devices like drones and UAVs, cleaning appliances, and medical electronics requiring reliable power.
  • What is the cycle life of this battery cell?
    The RS50 battery maintains approximately 80% of its capacity after 500 charge cycles, providing long-lasting performance before requiring replacement.
  • What safety precautions should be taken when using this lithium-ion battery?
    Never leave the battery unattended while charging, keep away from children and animals, prevent contact with metal objects to avoid short circuits, regularly inspect wraps and insulators for damage, and only use within manufacturer specifications to ensure safe operation.
  • What is the operating temperature range for this battery?
    The RS50 can be charged in temperatures from -20°C to 60°C and discharged in temperatures from -40°C to 80°C, making it suitable for various environmental conditions.
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