RTC battery for T3.2

Status
Not open for further replies.

floating.

Well-known member
What are the recommended RTC batteries for the Teensy 3.2? CR2032? Something else?

How long would a CR2032 last? (I'm just looking for an approximate, ballpark figure)
 
Thanks, I got it. I think I'm not going to verify that figure ( :) ) but I have a feeling that with heat and self-discharge factored in, it's likely to be significantly less than 17 years.

But I guess I can probably expect a CR2032 last for about 5 years or so.

Of a possible other option, does anyone know how complicated or costly is a circuit that would charge a LIR2032?
 
Most CR2032s have a "shelf life" spec in the 5 to 10 year range. Usually those specs are worst case scenarios based on higher temperatures, so they may not be an issue if the battery is kept at room temperature or in a cold environment.

Then again, the self discharge may play a factor, for less than the 17 years you might expect from only the capacity rating.

Here's one graph that really explains the situation pretty well.

sc.png
 
Status
Not open for further replies.
Back
Top