Disposable batteries seem so 1990s. Sure, it’s nice to be able to spend a couple of bucks at the drugstore and get a flashlight or TV remote back in the game, but when the device is a daily driver, ...

Former Goldman Sachs CEO Lloyd Blankfein sparked some tech nostalgia with a photo of a calculator made by HP Inc (NYSE:HPQ) four decades ago. What Happened: “The battery just ran out on my HP12C.