BTExpert Battery for Hp PROBOOK 4440S PROBOOK 4441S PROBOOK 4445S PROBOOK 4446S PROBOOK 4540S PROBOOK 4545S 5200mah 6 Cell Color: Black - Dimension/mm: 268.60 x 44.40 x 20.30 mm - Type: Lithium Ion. - Capacity: 5200mah - Unit Cell: 6 - N.W./g:313g This Replacement battery is guaranteed to meet or exceed original specifications. Quality: Durable and Utilizes high quality grade "A" cells for higher performance and more reliability. Fast charging. Low power consumption. Built-in protection circuit ensures both safety and stability. Buy with confidence!: The most cost effective and long lasting product available on the market today. Peace of Mind - 30 day worry free/no question ask return policy. Fast Shipping Peace of Mind!: Freshly produced and environmentally friendly and certified merchandise. We don't keep these on shelf because of our high-volume sales. We are able to sell good quality products at low prices because we buy direct from Manufacturers & Distributors in bulk quantity. BTexpert is a registered trademark protected by the US Trademark Law and is marketed exclusively by BTEXPERT. Any attempt to copy, relist or resell of BTexpert products without permission is prohibited; we reserve the right to take action against violators.