Retrofitting an RTC battery on the I2C bus in the KC858-A-8 V1.6 panel

[HA7CQ]

Greetings to all!

I have 2x KC868-A-8 V1.6 panel.

Our project requires that the panel does not forget the exact time setting even after a power cut.

It is possible to integrate  a RTC I2C module -with battery- into the I2C bus, for example  same ways as KC 868-A6 have?
For example DS3231 ? https://www.aliexpress.com/item/10050064...QwHg7&mp=1

Thanks Your support!

Mihaly