Maintenance Tips for Internal Batteries and External Battery Boxes of Police Frequency Jammers

1. Choosing the Right Charger:

Regardless of whether a police frequency jammer uses internal batteries or external battery boxes, the mainstream choice for both is the 18650 lithium battery due to its large capacity, sufficient power, and long lifespan. As these batteries have specific voltage and capacity requirements, they are usually custom-made by suppliers. Consequently, the chargers for these batteries are also specially designed. It is crucial to use the dedicated charger provided by the manufacturer and avoid using random chargers to charge the internal batteries of police frequency jammers.

2. Regular Charging and Discharging:

If a police frequency jammer remains unused for an extended period, it is recommended to periodically charge and discharge the internal batteries. Failure to do so may result in damage to the internal 18650 lithium battery cells. If the jammer is fully charged, used for a shorter duration than usual, powered off, and then, after a waiting period, powered on again, and it operates normally for a certain period, it is likely that one of the battery cells in the internal battery has malfunctioned. In such cases, it is advisable to contact the equipment supplier promptly for repair.


Proper maintenance of the internal batteries and external battery boxes is essential for police frequency jammers to ensure optimal performance and prolong the battery lifespan. Using the correct charger and periodically charging and discharging the batteries are crucial steps in maintaining these devices. By following these guidelines, law enforcement agencies can maximize the effectiveness and longevity of their police frequency jammers.