Some ring lights are rechargeable, while others require a power source such as an AC adapter or batteries. If you are looking for a portable ring light that you can use on-the-go, a rechargeable option may be a good choice. However, if you plan to use your ring light primarily in a studio setting, a plug-in model may be more practical. It's important to check the specifications of the specific ring light you are interested in to see if it is rechargeable or not.