Pin-Type Li-Ion Battery Maintains 80% Capacity after 5000 Cycles

Pin-Type Li-Ion Battery Maintains 80% Capacity after 5000 Cycles

The CT04120 from Murata is a small form factor lithium-ion battery that can support 10C Charging rates without the need for a battery controller IC. Continuous discharge at a 10C rate is also supported by these rechargeable batteries.

In addition, since the internal resistance is low and the voltage drop is small, stable discharge is possible even under a large peak load or low temperature.

These devices have a diameter of 4mm and maintain 80% of their initial capacity even after 5000 cycles. Since these rechargeable batteries are based on lithium titanite, there is no possibility of thermal runaway.

Applications are expected to fall into three general categories including: small devices such as electric pens, styluses and wearables; back-up power in handy terminals, barcode readers, point of sales equipment and so on; and energy storage in energy harvesting powered devices such as solar battery powered equipment and wireless sensor nodes with various energy harvesting power sources.

Benefits and Applications

Small power equipment

  • Quick charge with High rate charge (10C) is available
  • Constant voltage charge is available
  • Able to use many times due to long cycle life
  • High safety and small weight saving

Backup power supply

  • System backup even when the main battery is replaced or the battery is disconnected
  • High power discharge is available
  • Constant voltage charge is available
  • Charge control IC is unnecessary

Energy harvesting system

  • Chargeable/dischargeable in wide rate ranges
  • Long operating time due to low leakage current
  • High power output is available
  • Resistant to over discharge
  • Operation temperature is wide

On The Web: Murata Manufacturing Co. Ltd.

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Mike is the founder and editor of, an electronics engineering community/news and project sharing platform. He studied Electronics and Physics and enjoys everything that has moving electrons and fun. His interests lying on solar cells, microcontrollers and switchmode power supplies. Feel free to reach him for feedback, random tips or just to say hello :-)

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