Keep your Sony Ericsson or Sony flip cell phone powered up with the Sony BST-39 3.6V Battery. Designed to be compatible with models including the W518a, W910i, W380, Z555, and T707, this battery has a capacity of 920 mAh, ensuring you have enough power for calls and messaging throughout the day. Crafted from durable rigid plastic, the black battery features a slim design for a comfortable fit in your pocket or bag. It comes with a convenient 1/2 ft cable for easy connection to your phone's charging port, keeping you connected without the hassle of running out of juice.