Product Description

1644C is a lithium coin cell battery with high capacity and long cycle life, ideal for TWS earphones.

Product Info

Minorder 5000

Product Detail


  • Lithium coin cell battery in miniature size ideal for small hearable and wearable devices;
  • Manufactured using VDL's proprietary stacking technology;
  • High capacity and long cycle life;
  • Fully certified;
  • 1 Year product warranty;
  • Up to US$20 million product safety insurance


  • TWS earphones;
  • Wearable devices;
  • Smart jewelries;
  • Wearable medical sensors;
And more......


Model Maximum Dimension (mm) Minimum Capacity (mAh) Internal Impedance (mΩ) Normal Voltage (V) Charge Ending Voltage (V) Approximate Weight (g) Maximum Charge Current Maximum Discharge Current
Diameter (mm)  Height (mm)
1644C 16.1 4.6 90 350 3.7 4.2 3.3 2C/180mA 2C/180mA

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