Laptop Battery For IBM ThinkPad R60 R61 R61I R61E T60 T60P T61 T61P T500 W500 Z60M Z61M Z61P Z60 Z61E SL500 SL400 SL300 P/N's: 40Y6795 92P1141 92P1141 92P1137 (ONLY for Laptops of 14.1" & 15.0" standard screens and 15.4" widescreen) Battery type: Li-ion; Capacity: 56Wh; Cells:6-cell; Voltage: 10.8V;Capacity:5200mah. Compatible Models: For IBM/Lenovo thinkpad T60 T60P T61 T61p W500 T500 R60 R61e R61i R61 SL400 SL500 Z61m Z60m, for Part number 92P1141 92P1137 92P1139 replacement notebook laptop battery batteries High quality grade "A" cells. Charges quickly. Longer discharge time. Steady output and low power consumption. More than 500 times charge-discharge cycles.All products are Certified by CE ROHS UL1642 FCC for safety. Operation time for standard batteries(6-cell 5200mah): Around 2 hours the actual operation time will depend on how much electricity is required by the device and how you use it. 24 x 7 email support 12-month service. 12-months hassle-free warranty service. Please check if this battery is compatible with your computer before purchasing. Part numbers of compatible batteries and Computers are listed as following.