Lenovo Battery Internal 4 Cell 15.52V 90Wh

Lenovo 5M11L99161 is an integrated four-cell battery assembly for a laptop, intended to provide internal power. Its stated energy capacity is 90Wh, and Lenovo’s assembly name is MECH_ASM Integ 4c/90Wh SWD ASM.

The listed compatible part numbers are 5B11B79217 and 5B11B79218. Alternative parts are 5M11E25313, 5M11E25314, 5M11L99160, 5M11L99163, 5M11L99164, 5M21L37921 and 5M21L37922. These refer to related service parts; this description is for the specific 5M11L99161 assembly.

The four-cell construction and 90Wh capacity help identify this internal laptop battery when checking the required service part.