10.80V, 6600mAh, Li-ion, Hi-quality Replacement Laptop Battery for IBM ThinkPad R60, R60e, R61, R61e, R61i, T60, T60p, T61, T61p, Z60m, Z61e, Z61m, Z61p Series, Compatible Part Numbers: 40Y6795, 40Y6797, 40Y6799, 41N5666, ASM 92P1128 1. In using this replacement battery, a warning message of "NOT ORIGINAL / GENUINE BATTERY" will appear whenever switching on your computer. Computer functioning and battery charging would not be affected. What you need to do is to shut down the notice by clicking the "Power Manager". Thanks for your attention. 2. Not compatible with ThinkPad T61/R61 14"widescreen & ThinkPad SL300, ThinkPad SL400 and ThinkPad SL500. Weight: 595.35 g | Battery Type: Lithium-ion (Li-ion) | Voltage: 10.80V | Capacity: 6600mAh | Color: Black Compatible Part Numbers: 40Y6795, 40Y6797, 40Y6799, 41N5666, ASM 92P1128, ASM 92P1130, ASM 92P1132, ASM 92P1138, ASM 92P1140, ASM 92P1142, FRU 42T4502, FRU 42T4504, FRU 42T4513, FRU 42T461, FRU 42T4619, FRU 42T5233, FRU 92P1127, FRU 92P1129, FRU 92P1131, FRU 92P1133, FRU 92P1137, FRU 92P1139, FRU 92P1141 Please ensure the product(s) that you are going to buy fits the brand, model, part number and dimension (mentioned above) of your device.