One of the Hobo dataloggers asked for a new battery during its most recent data dump. The old battery dates back to January 2015:
That was when a batch of Energizer cells failed in quick succession: it wasn’t the datalogger’s fault. I’ve been handling the cells a bit more carefully, too, although that certainly doesn’t account for the much longer life.
With batteries, particularly from eBay, you definitely can’t tell what you’re going to get or how long it’ll last; that’s true of many things in life.
The Smell of Molten Projects in the Morning 
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[…] light over the table, with the battery holders sitting on the sash. I’d just replaced some data logger CR2032 cells, so they’re running from nearly dead lithium […]