You will still get parking mode when using the cigarette lighter adapter (CLA) with the battery pack with the BlackVue dash cameras. It will be a vehicle motion based parking mode instead of an immediate entry into and exit from parking mode. The vehicle motion based parking mode is available whenever parking mode is enabled in the BlackVue dash cameras. When you use the 3-wire hardwire cable to connect to the battery pack, the BlackVue dash camera will enter/exit parking mode immediately when the vehicle accessory (battery pack charging power) is turned off/on.