Hi,
I am using the RTC DS1337 with a CR2032 battery. I know that when these battery shows 2.7v, it needs replacing, Although the RTC can go down to 1.4V from the spec sheet. I even powered it through my power supply at 1.1V and it was keeping time correctly. I am only power the RTC from the battery. My question is : How low of a voltage can I go before replacing in a real life situation ?
K
Uh, 1.1V? From your own experiment?
In principle you can go down to 0v if the OS or a 3rd party app sets the time correctly on bootup - if its in an online pc.
IRL batteries decline in output relatively quickly near end of life, so its not normally worth trying to squeeze every drop out. If you're willing to gamble on it working ok and on leaking & corrosion, you can leave it till it dies. CR2032s are more leak resistant than ZnC etc.
NT
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