52.5Wh lithium-ion internal

Lenovo 5B10W51904 is an internal lithium-ion laptop battery for use when the computer is away from mains power.

Its 52.5 Wh energy capacity and 4-cell construction identify this battery variant. The compatibility table lists ThinkPad P16s Gen 1 and T16 Gen 1. T16 Gen 2 appears in the listing title, but not in that table, so check the exact laptop model before choosing this replacement.

This part is intended to replace the internal battery in the listed laptop families. The part number helps distinguish it from other Lenovo battery variants.