Your V150 camera can only be powered using the rechargeable Lithium battery pack (V-LIT-B2) that is included in the box. You can recharge the battery pack using the supplied USB charging cable.
The built-in solar panel acts as an alternate power source. Make sure to place the camera in an area that gets a good amount of sunlight during the day (enough to cover 50% of the solar panel). This will help maximize the battery life of your camera.