1238 Coin Battery Lithium Coin Battery

1238 Coin Battery Lithium Coin Battery

Rechargeable lithium coin battery specificly designed for thinner devices

As a manufacturer of lithium batteries, VDL has 5 R&D bases and 1 doctor's workstation, which developed more than 1,000 battery models. Using winding and stacking production technology, the product can be used in many electronics industries.
1238 Coin Battery Lithium Coin Battery


  • Rechargeable lithium coin 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
Normal Voltage (V) Charge Ending Voltage (V) Approximate Weight (g) Maximum Charge Current Maximum Discharge Current
Diameter (mm)  Height (mm)
1238 12.1 4.0 35 600 3.7 4.2 1.6 1C/35mA 2C/70mA