I finally purchased a programmable battery charger.
I went with the Maha PowerEx MH-C9000 that I mentioned last year. Since purchasing the charger a couple weeks ago, I’ve been geeking out about batteries. I’ve labelled all of my Eneloops and started a database where I log the purchase date, capacity, and other information. I’ve put the database in git so that I can track the performance of an individual battery over time. The database is on GitHub.