Jovan 0 Posted June 3 Hello, Is there any way to read voltage level of the installed CMOS battery within the Debian OS? Purpose is to signal the operator when there is a need for battery replacement before it becomes dead and unusable. Thanks Share this post Link to post Share on other sites
tooz 52 Posted June 4 hello @Jovan, it's not possible to read the cmos battery voltage due to hardware design. the input supply voltage range cannot be read externally 1 Share this post Link to post Share on other sites
tooz 52 Posted June 5 what's the cmos battery you're using? if it's got external pins perhaps you can try connecting it with the 40 pin module on tinker board 2s for it to read the voltage Share this post Link to post Share on other sites
