V7's high-quality replacement notebook batteries are made from the highest-quality cells available & incorporate all of the standard logic boards, thermal protectors, thermistors & circuit breakers to ensure maximum levels of safety, reliability & efficiency. V7's wide selection is compatible with top-line products from all major manufacturers & meets or even exceeds original OEM specifications to provide longer-lasting quality & no memory effect. Selection V7 offers a wide variety of batteries for notebooks from all major OEMs like Acer, Apple, Asus, Compaq, Dell, Gateway, HP, IBM, Lenovo, Panasonic, Samsung, Sony, Toshiba & others. Pricing V7 offers leading price-performance ratio Compatibility V7 batteries are 100-percent compatible with OEM products. Dependability V7 batteries meet or exceed original OEM specifications. Quality They are designed with the finest components available. Performance V7 batteries are longer-lasting, without memory effect Warranty Each battery has a 1 year warranty against manufacturing defects. Features Built with high quality components that fit select LENOVO-IBM laptops Volts: 11.1V, Cells: 9 Cells, Chemistry: Lithium-Ion, Capacity: 7800m Ah Replacement for original battery part number 42T4530, 42T4531, 42T4532, 42T4644, 43R2499 Compatible with LENOVO-IBM Lenovo Think Pad R61, LENOVO-IBM Lenovo Think Pad R61i, LENOVO-IBM Lenovo Think Pad T61, LENOVO-IBM Lenovo Think Pad R400, LENOVO-IBM Lenovo Think Pad T400 Lenovo Think Pad (14W, LENOVO-IBM Lenovo Think Pad 14.1" (Widescreen only)