I have one of the early AIR’s that has been in the field since about Sept 2017. At the the time, I installed the recommended Ultimate Lithium batteries.
The 1st set of lithiums lasted over a year … in fact I replaced them around November 2018 even though the original batteries were still behaving just fine.
The 2nd set of lithium’s lasted about 4-5 months and the AIR went offline suddenly in March 2019.
Today (July 2019) I observed that the 3rd set of lithiums are in decline … battery voltage is reported to be about 2.7V. I have feeling that the AIR will fail again sometime soon.
I have some theories …
- only the 1st set of lithium batteries were good, the others are all faulty or had exceeded their shelf life ?
- my AIR has had a firmware update that causes it to consume more energy ?
- my AIR has developed hardware fault ?
- perhaps I’ve moved the hub, and the AIR’s signal to the hub is now weak causing it to burn more energy trying to transmit to it. (wild guess, no evidence)
P.S. I also have a SKY deployed here and its batteries seem just fine, making my 1) above seem unlikely.
Does anybody at WF have any advice about this