DBTLAP CMOS battery for Lenovo ThinkPad X220

DBTLAP CMOS battery for ThinkPad X220

This DBTLAP CMOS battery is a direct replacement for the real-time clock cell on a Lenovo ThinkPad X220 motherboard. It ships new and tested, supplying the low-voltage power that keeps BIOS settings and the system clock alive while the main battery is removed or drained. The lithium chemistry matches the original specification for reliable long-term operation. Installing it restores persistent configuration storage without requiring a full main battery replacement.

Suitable for owners of a ThinkPad X220

This part suits anyone whose X220 loses date, time or BIOS settings after power loss, indicating a depleted CMOS battery. It is not for users trying to fix a worn-out main laptop battery, nor for any other ThinkPad model or laptop brand. The connector and form factor are specific to the X220 motherboard, so compatibility cannot be assumed for different systems. Buyers needing a primary power source should look at the main battery category instead.

Lithium chemistry determines voltage

The cell uses lithium chemistry, which provides the stable 3 V output required by the X220 RTC circuit and offers a multi-year service interval under normal use. No other voltage or chemistry is supported by this motherboard, so the lithium type is the single specification that confirms the part is correct. If the original cell was a different chemistry, this replacement will not function properly.