Just saw that my JeeNode Micro test setup has been running and “blipping” for 90 days:
The voltage is starting to drop a bit, and the voltage drop before and after using the radio has increased from 0.08 to 0.16 V (reported with a granularity of 0.02 V), but everything seems to be fine. It has pumped out over 120,000 packets so far.
The other test is a JeeNode Micro with boost regulator, running of one Eneloop AA battery. That battery voltage has also dropped a bit, but as you can see, the boost regulator is doing its thing and still providing the exact same 3.04 V as it did when the test was started.
It’ll be interesting to see how long each of these setups holds out. I have no idea, really. It’s not just a matter of capacity – with the coin cell, it’ll also depend on how long the battery can continue to provide these brief 20..20 mA power bursts for each transmission.