10.8V 4400mAh LAPTOP Battery For ThinkPad R51e 1848, ThinkPad R50p 1830, ThinkPad R50p1836, ThinkPad R52 1849, ThinkPad R51e 1845, ThinkPad R50 2894, ThinkPad T42, ThinkPad R52 1846, ThinkPad R50e 1870, ThinkPad R50 2887, ThinkPad R50, ThinkPad R51 2887,