Comment on Coin-sized nuclear 3V battery with 50-year lifespan enters mass production
chonglibloodsport@lemmy.world 1 day agoWhy not Solar? I have fairly recent Casio (FX-260 Solar II) and it works in dimmer lighting conditions than I’m comfortable working under anyway. Under normal lighting (for being able to see while doing math with pencil and paper) it’s rock solid!