Battery change on the Deggy Pen

The Deggy Pen uses a 3V lithium battery, size 123.
The battery is expected to last 2 years, depending on use.

Drained Battery alert:

When the battery is drained, the Pen stops working, but it will not lose any recorded information. As soon as you insert the new battery, you can download the previously collected data.


Take the drained battery out only when you are going to replace it, and do not leave the Pen without any battery for more than 1 minute, in order to maintain the clock.

The battery in the Deggy Pen can be easily changed.
The battery itself can be purchased in specialized battery or photo shops.
A 5/64 Allen key is required.

Follow the steps bellow for battery change:

  1. Using the Allen key 5/64 remove the screw from the steel bottom of the Deggy Pen.
    Deggy Pen - Remove screw
  2. Unscrew the steel bottom of the Deggy Pen counterclockwise.
    Deggy Pen - Unscrew
  3. Replace the battery
    Deggy Pen - Replace the battery
    IMPORTANT: Try not to leave the Pen for more than 1 minute without a battery.

  4. Reverse the steps to close the Pen.