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Vanadium rechargeable lithium coin batteries (VL series)

These coin batteries feature vanadium oxide as the positive pole, lithium alloy as the negative pole and a non-aqueous solvent as the electrolyte.
Lithium Coin Type Rechargeable VL Series 640x734.png

VL battery line-up: over 30 years of manufacturing experience

The well known Panasonic rechargeable VL (vanadium) lithium technology offers a self-discharge rate at 20°C of only 2.0% per year and 1,000 charge/discharge cycles at 10% depth of discharge (DoD). This superior long-term reliability is ideal for applications such as real rime clock (RTC), tracking & RFID, remote keyless entry (RKE) and IoT systems.  

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  • Self-discharge rate at 20°C is only 2.0% per year
  • 1,000 charge-discharge cycles at 10% depth of discharge (DoD)
  • Superior long-term reliability
  • 30+ years of experience in production


Real Time Clock (RTC)
Tracking & RFID
Remote Keyless Entry (RKE)
IoT applications
Remote controls etc.

What does a lithium VL battery look like inside?

Lithium VL Coin Battery Inside Panasonic Industry

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

How to read the model numbers used for lithium batteries

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

VL - 2020

V- vanadium pentoxide lithium battery
L - round
20- battery diameter (in mm)
20- divide this by 10 to obtain the battery height (in mm)