The Battery PA5136U-1BRS is a black Li-Ion battery specifically designed for the Toshiba Portege Z30-A, Z30-B, and Z30-AK03S series laptops. With a capacity of 52Wh and a voltage of 14.8V, this AC/Standard battery is compatible with Toshiba laptops and provides reliable power for extended use. Keep your device powered up and ready to go with this high-quality, genuine Toshiba battery.