This battery lasts the life of the router under the operating environmental conditions specified for the router, and is not field-replaceable.
But who determines its lifespan?
Knowing there is a battery set to fail and I can’t simply replace it makes me physically uncomfortable. Enough so that I’d rather it not have RTC.
Thanks Cisco.
Nice! Do the Letters mean anything?
Generally the chemistry and any features of the battery.
https://wikipedia.org/wiki/Button_cell#Type_designation
C means Lithium. The R means Round.
The IS IEC spec that defines the coding is 60086-3