If your radio is not working after changing the battery, there are a few potential reasons for this.

First, it’s possible that the battery you installed is not compatible with the radio. Different types of batteries have different voltage levels and sizes, so it’s important to make sure that the battery you are using is the correct type for your radio. If the battery is not the correct type, it may not provide enough power to the radio, or it may not fit properly in the battery compartment.

Another potential reason for a radio not working after changing the battery is that the battery may not be installed properly. This can happen if the battery is not inserted in the correct direction, or if it is not securely fastened in the battery compartment. If the battery is not properly installed, it may not be able to provide power to the radio.

Additionally, it’s possible that the radio itself is not functioning properly. Over time, radios can experience wear and tear that can affect their performance. If the radio is not working properly, changing the battery may not fix the problem. In this case, it may be necessary to have the radio repaired or replaced.

It’s also worth considering that the issue may not be with the battery or the radio at all, but with the external power source. If the radio is not receiving power from the external power source, it will not be able to function, even if the battery is installed and working properly.

In conclusion, if your radio is not working after changing the battery, the issue may be due to the battery not being the correct type or not being installed properly, the radio itself not functioning properly, or the external power source not providing power to the radio. It’s important to carefully diagnose the problem and determine the correct course of action in order to get your radio working again.