TWB Premium Grade Generic Laptop Battery For HP ProBook CA0XL 640 645 G1 TWB Batteries are the perfect choice that you can make for your computer. Very affordable, The best quality batteries on the market. Long Life durable Battery for your Laptop Specification of the Battery: 204.43 x 48.71 x 22.18 mm Lithion-Ion Battery 4400mAh / 48Wh 11.1 Volts Model No: HP ProBook 640, HP ProBook 640 G1, HP ProBook 645, HP ProBook 645 G1, HP ProBook 650 G1, HP ProBook 655, HP ProBook 655 Part number: HP 718755-001, HP CA06XL, CA06, HP HSTNN-IB4W, HP HSTNN-LB4X Package includes: 1 X Battery What's in the box 1 X Laptop Battery