The BTI Tecra TE - Series Notebook Battery is designed specifically for Toshiba Tecra TE2000 and TE2100 Series notebooks. This lithium - ion battery delivers a reliable 11.1V DC output and boasts a capacity of 4400 mAh, ensuring your device is always ready for use. Its proprietary battery size makes it smaller and lighter than other rechargeable batteries, making it ideal for portable devices. With the ability to be recharged multiple times, this battery not only saves you money but also provides dependable performance for your notebook.