MX Keys battery (PC + Mac)

Overview

MX Keys battery (PC + Mac): the rechargeable lithium-polymer battery inside the full-size MX Keys, which powers the keyboard between USB-C charges. It is often the only worn part of a keyboard that is otherwise in good shape: replacing it saves replacing the whole keyboard.

How to replace it

The case has to be opened: allow about 25 minutes the first time, following our step-by-step battery replacement guide. Unplug the connector by holding the connector itself, never the wires, peel the old battery off with a plastic tool rather than a metal one, and never bend or puncture a swollen battery. Once the keyboard is closed again, give it a full USB-C charge.

Guide: replacing the MX Keys battery yourself, step by step

Frequently asked questions

Does this battery fit an MX Keys Mini?

No. The MX Keys Mini takes a different battery, sold under another reference. Check your keyboard's model before ordering: its name is printed underneath the case.

Should I charge it before fitting it?

No. Fit it first: the keyboard's own circuit manages charging. Then plug in the USB-C cable for a first full charge.

What should I do with the old battery?

Take it to a battery collection point, at a recycling centre or a shop, never in household waste. If it is swollen, keep it away from anything flammable in the meantime.