Loaded the Sep5 nightly of Trixie on 2 Pi5 16G units. All was working great. Just received my RTC batteries for them and plugged them in. When I do:I get 2764099
Charging shows 0
I then addedto /boot/firmware/config.txt and rebooted.
the is now gone sudo timedatectl shows:Running So it still shows the battery volts, but it is not charging either.
removing the charging code line and running timedatectl shows:Any ideas?
Code:
more /sys/devices/platform/soc@107c000000/soc@107c000000:rpi_rtc/rtc/rtc0/battery_voltageCharging shows 0
I then added
Code:
dtparam=rtc=bbat_vchg=3000000the
Code:
/sys/devices/platform/soc@107c000000/soc@107c000000:rpi_rtc Code:
$ sudo timedatectl Local time: Mon 2025-09-08 17:11:46 PDT Universal time: Tue 2025-09-09 00:11:46 UTC RTC time: n/a Time zone: America/Los_Angeles (PDT, -0700)System clock synchronized: yes NTP service: active RTC in local TZ: no Code:
$ sudo vcgencmd pmic_read_adc BATT_V BATT_V volt(25)=2.76410000V removing the charging code line and running timedatectl shows:
Code:
$ sudo timedatectl Local time: Mon 2025-09-08 17:18:55 PDT Universal time: Tue 2025-09-09 00:18:55 UTC RTC time: Tue 2025-09-09 00:18:55 Time zone: America/Los_Angeles (PDT, -0700)System clock synchronized: yes NTP service: active RTC in local TZ: noCode:
$ vcgencmd bootloader_version2025/08/27 20:01:47version 000d3ca289ae790a2e46225eb11b319c67642b1a (release)timestamp 1756321307update-time 1757117128capabilities 0x0000007fStatistics: Posted by 5ft24dave — Tue Sep 09, 2025 12:19 am