Lenovo Battery Internal 6c 90Wh LiIon CXP

The Lenovo 5B10W13902 is a rechargeable internal battery for the ThinkPad P53, intended to replace an old or failing battery. Its exact part number identifies this variant among Lenovo batteries.

With six lithium-ion cells and a stated capacity of 90 Wh, it provides stored energy for the laptop. These specifications do not determine runtime, which depends on the computer and how it is used.

As an internal battery, it powers the ThinkPad P53 when the laptop is used away from an external power supply. This is a replacement part for that laptop, rather than an external battery pack or general-purpose power bank.