# Cmos battery possible for Devterm?

**URL:** <https://forum.clockworkpi.com/t/cmos-battery-possible-for-devterm/8454>\
**Category:** DevTerm\
**Tags:** hardware, devterm-a06, a04, extension\
**Created:** [May 12, 2022, 6:18pm UTC](https://forum.clockworkpi.com/t/cmos-battery-possible-for-devterm/8454 "2022-05-12T18:18:41Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![tumalso](https://avatars.discourse-cdn.com/v4/letter/t/b5a626/32.png) [@tumalso](https://forum.clockworkpi.com/u/tumalso)\
**Post date:** [May 12, 2022, 6:18pm UTC](https://forum.clockworkpi.com/t/cmos-battery-possible-for-devterm/8454/1 "2022-05-12T18:18:41Z")

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Is it possible to develope a hardwareextension regarding a configuration of a system clock?

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**Author:** ![Petrakis](https://yyz1.discourse-cdn.com/flex029/user_avatar/forum.clockworkpi.com/petrakis/32/256_2.png) [@Petrakis](https://forum.clockworkpi.com/u/Petrakis)\
**Post date:** [May 13, 2022, 8:33am UTC](https://forum.clockworkpi.com/t/cmos-battery-possible-for-devterm/8454/2 "2022-05-13T08:33:00Z")

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Of course, the steps would be fairly similar to these: [Set Up & Test I2C | Adding a Real Time Clock to Raspberry Pi | Adafruit Learning System](https://learn.adafruit.com/adding-a-real-time-clock-to-raspberry-pi/set-up-and-test-i2c)