[time-nuts] Motorola Oncore UT+ firmware upgrade & backup power questions

Charles Steinmetz csteinmetz at yandex.com
Sun Mar 15 22:49:23 EDT 2015

Attila wrote:

>A CR2032 is usually of LiMnO2 chemistry, while AA/AAA's
>are usually ZnMnO2. Also coin cells are optimized for long life times,
>with very little current drawn, while most AA/AAA are not, or not as much.
>Ie, i wouldn't expect an AAA cell, and much less an AA cell to last 10 years.

The Energizer AA and AAA lithium primary batteries (Li/FeS2) have a 
shelf life exceeding 10 years, as do their 9v batteries (Li/MnO2).  I 
have been mightily impressed with their performance on all counts.

Best regards,


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