45N1144 45N1145 45N1152 45N1153 45N1150 45N1151 0C52864 0C52863. For Lenovo ThinkPadT440P T540P Series. For Lenovo ThinkPad W540 W541Series. For Lenovo L440 L540 Series. Cell:9 Cells. Remove the old battery, carefully install the new battery on the battery case, screw in the screw, and connect the wiring of the new battery.
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