100+ half-spent AA batteries, what do?
November 17, 2020 8:35 AM Subscribe
I maintain battery-operated sensors far from my main work site. These get fresh alkaline AA batteries every 5-6 weeks to ensure they're always working, leaving me with way more partially-used batteries than I can use in stuff like computer peripherals. They're still putting out 1.5V, but I know that doesn't tell me much about how much life they have left. What can I do with these? (I'm working on retrofitting the sensors to solar, but I still have a pile of batteries I'm trying to avoid just recycling. Rechargeable AAs are not a good option because the batteries are exposed to freezing weather.)