JYF 6 Cell 48Wh 57+ Laptop Battery For Lenovo ThinkPad T440P T540P L440 L540 W540 Series; 45N1145 45N1147 45N1149 45N1151 45N1153 45N1158 45N1159 Batteries capacity: 48WH | Chemistry: Li-ion | Voltage: 10.8 Volts | Cells: 6 | 100% NEW from manufacturer; Up to 500 recharge cycles over the life of the battery Superior Quality: Grade A cells ensure fast charges and low power consumption; Built-in circuit protection ensures both safety and reliability. Fast charging. Low power consumption. Built-in protection circuit ensures both safety and stability. 24 x 7 email support; 12-month hassle-free warranty