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Lithium coin type batteries for high temperature (BR-A series)

The high energy density and special materials used for the gasket and separator make this battery series the ideal energy source for high ambient temperature applications.
Lithium Coin BR-A series.png

Stable performance for high temperature applications

Panasonic's BR-A series Lithium coin type batteries feature a wide operating temperature range of -40°C to +125°C, an outstanding long-term reliability and a low self-discharge rate at 20°C of just 0.5% per year. Moreover Panasonic has years of experience in the production of such devices. These batteries can power applications such as tire pressure monitoring systems (TPMS), electronic toll collection (ETC) systems etc.

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  • Superior design for high temperature applications -40°C to +125°C
  • Outstanding long-term reliability
  • Self-discharge rate at 20°C of just 0.5% per year
  • 22+ years of experience in production



Tire Pressure Monitoring Systems


Electronic Toll Collection

Heat cost allocators etc.

Lithium BR-A series coin type - inside the battery

Batteries: Lithium Coin BR-A series line up Panasonic Industry

Do you want to look inside a lithium coin battery? This 3D graphic shows the inner working of a Lithium coin battery and gives an excellent overview of the battery materials (electrodes, gasket, insulator, poles, etc.).

1 Negative pole

2 Anode (lithium)

3 Separator

4 Gasket

5 Positive pole (cell can)

6 Cathode (Poly-carbon monofluoride)

How to read the model numbers used for Lithium batteries

As a general rule, the model number contains two capital letters and four digits as shown in the example, (exceptions should be expected). This numbering system is supported by the Japan International Standard Committee of Clocks and Watches and is also an established practice in Japan.

BR - 2477A

B- poly-carbon monofluoride lithium battery

R- round

24- battery diameter (in mm)

77- divide this number by 10 to obtain the battery height (in mm)

A - high temperature type