Lithium Ion Replacement Battery For IBM ThinkPad T20 (also works with IBM 02K7029) Looking for reliable performance from your IBM 02K7029 Laptop? Our IBM 02K7029 battery will provide you the performance and dependability that you demand for your Laptop. With an efficient rating of 10.8V Volt and 4400 , you never have to worry about being too far from an ac outlet. Our line of IBM 02K7029 batteries are precision-engineered and rigorously tested for voltage, capacity, compatibility and safety to exceed original equipment manufacturer specifications. With an industry leading warranty and customer service, you can’t go wrong. ... More Info