This Apple A1078 Notebook Battery is designed for 15-inch PowerBook G4 and is being sold as untested. It is compatible with various Apple PowerBook models and has a voltage of 10.8V. The battery type is Li-Ion and the color is gray. Please note that the condition of the battery is not mentioned in this description. However, it is important to keep in mind that since it is being sold as untested, it may or may not be in working condition. This battery can be used as a replacement for your current one, provided it is compatible with your device.