# Battery power backup for Homey Pro 2023

**URL:** <https://community.homey.app/t/battery-power-backup-for-homey-pro-2023/88810>\
**Category:** Questions & Help\
**Tags:** homey-pro\
**Created:** [September 5, 2023, 12:07pm UTC](https://community.homey.app/t/battery-power-backup-for-homey-pro-2023/88810 "2023-09-05T12:07:58Z")\
**Posts on this page:** 1\
**Showing post:** 10

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**Author:** ![robertklep](https://sea1.discourse-cdn.com/flex025/user_avatar/community.homey.app/robertklep/32/160628_2.png) [@robertklep](https://community.homey.app/u/robertklep)\
**Post date:** [September 6, 2023, 9:10am UTC](https://community.homey.app/t/battery-power-backup-for-homey-pro-2023/88810/10 "2023-09-06T09:10:04Z")

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HP2023’s were initially shipped with a 5V power supply, which caused undervoltage issues, so Athom had to replace them all with 5.2V power supplies 🤷🏼‍♂️ (0.2V happens to be the voltage drop of a Schottky diode, so my guess is that there’s either a misplaced diode in the Ethernet adapter or in Homey itself that’s causing this, and it’s probably cheapest to replace power supplies).

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