Lenovo BATTERY 1Cell 3V JHT/Maxell

Lenovo 5B11Q51974 is a one-cell 3 V JHT/Maxell RTC battery for ThinkPad laptops. Its CR2016 type is intended to power the laptop’s real-time clock circuit, rather than serve as its main battery.

As an internal replacement part, it is intended for systems that use this battery type. The part number identifies it with the Lenovo listing, while its voltage, cell count and form indicate the specified battery variant.