1. First, determine whether the camera model supports the use of lithium batteries and purchase an adapter or adapter cable to connect the lithium battery to the camera. This will ensure that the battery is compatible with the camera's power interface.
2. Second, according to the camera model and technical requirements, select a compatible lithium battery to ensure that the battery voltage, capacity and size match the camera requirements.
3. Finally, open the camera battery compartment, remove the original dry battery, and properly install the lithium battery into the compartment, making sure the battery is well connected and firmly fixed.