Universal External Laptop Battery Pack (QS-U04) 1.Brand 100% new 2.1 year warranty ... 3.Built-in rechargeable lithium polymer Universal External Laptop battery pack specification: 1. Built-in rechargeable lithium polymer battery ( 5000MAH/11 ... compatibled with well-known brand notebooks including: IBM, Sony, Toshiba, HP, Acer, Compaq, DELL, Lenovo, Asus, and so on. So far ...