> A wireless IOT thermometer that uses AA batteries, that's just stupid. It's even stupider than that - AAA batteries! While I 100% agree with you, it's easy

> A wireless IOT thermometer that uses AA batteries, that's just stupid. It's even stupider than that - AAA batteries! While I 100% agree with you, it's easy to see how the team that did that thermometer got to that insane product - they started out with very conservative power estimates, saw some advantage to having a battery-powered thermometer, and started development. The power requirements skyrocketed, and whatever their original estimates for battery life were (6 months, whatever) went down the drain, but by that point it was too late to redesign all the electronics and mechanicals to accommodate bigger batteries or a power plug. Or, they had already raised money with "battery powered" as their main selling point, so it was the one feature they couldn't axe even if it killed the product.