RTC module battery requirements and installation

TECHNICAL SUPPORT Sensors & Modules
1

Customer:

Does the RTC module work without a battery? If a battery is installed, which battery should be used and how should it be oriented? Is it a 2032 or 2025? The contacts look unusual - they seem to short the top and bottom parts of the battery.

Original message (Croatian)

Pozdrav, da li RTC modul radi bez baterije? Ako se stavlja baterija, koja baterija i kako je treba okrenuti? Možda 2032 ili 2025? Kontakti izgledaju čudno tj. da kontakti kratko spajaju gornji i donji dio baterije.

Originally submitted via email support on 8 May 2025. Migrated to the forum for community visibility.

2

Soldered Support:

The RTC module works without a battery. The battery enables using the RTC in low power mode, but it can also be used normally via I2C. The battery is CR2032.

Original message (Croatian)

hvala na upitu, RTC modul radi i bez baterije, baterija omogućuje korištenje RTC-a u low power modu, ali može se koristiti na običan način preko I2C-a. Baterija je CR2032.