Got a Surface Pen that's running low on battery? Here's a handy guide on how to replace the battery.

The Surface Pen is an incredibly useful tool and accessory for the Surface Pro, Surface Studio, Surface Laptop and Surface Book. It's a battery-powered peripheral, meaning at some point the Surface Pen will stop working unless the battery is replaced. The Surface Pen uses a AAAA battery, meaning you may have to find replacement batteries online rather than in stores.

If your Surface Pen stopped working, that might be because the battery has run out. Don't worry, changing it is easy, Here's our step-by-step guide to help you along. Make sure you have the correct batteries before you begin. A single AAAA battery is required for replacement. You can find them on Amazon here.

(Note: The images in this article show the older Surface Pen and not the newest model. The process for replacing the battery is the same, except for one difference. The older Pen requires that you twist the cap before removing it to replace the battery. The new Pen's cap just pulls right off.)

How to remove the Surface Pen battery

  1. Pull the top of the pen away from the body of the Pen. You may have to use some force.

  2. Pull out the AAAA battery from the body of the Pen.

How to insert the battery

  1. Place the negative end of the AAAA battery into the body of the Pen. The negative end will be marked with a minus sign ( - ).

  2. Slot the top of the pen back into the body of the Pen. If your older Pen has paper attached, make sure you fold that back in with it or remove it. The new Surface Pen shouldn't have any paper.

  3. With some force, push the top of the head into the Pen. (If you're using an older Surface Pen, you have to twist the top to secure it.)

How often should you replace the battery?

Microsoft says the Surface Pen lasts a year on a single battery. That estimate will vary depending on your use of the Surface Pen, however, so it's always handy to have a spare battery ready.

See AAAA batteries on Amazon