🔋 21700 Rechargeable Li-ion Battery – 5000mAh – 3.7V – Button Top 🔋
A high-performance 21700 rechargeable lithium-ion battery with 5000mAh capacity and 3.7V output. The Button Top design ensures compatibility with a wide range of flashlights, controllers, and electronics projects that require a raised positive terminal. Delivers stable performance, long runtime, and is built for extended rechargeable use.
✅ Specifications:Type: Rechargeable Li-ion Battery
Model: 21700
Capacity: 5000mAh
Voltage: 3.7V
Design: Button Top
Dimensions: 18mm × 65mm
Weight: 50g
Recharge Cycle: >500 cycles
Protection: No built-in protection (BMS recommended for some uses)
🔹 Key Features:
✔ High capacity for long-lasting use
✔ Button top design for wider compatibility
✔ Stable and safe power delivery
✔ Ideal for mobile and DIY applications
✔ Rechargeable over 500 cycles
📌 Common Applications:
LED flashlights
Arduino and ESP32 projects
Remote control devices
Robotics and sensor modules
Portable power units
DIY electronics kits