You're right and I forgot about those. Those sit in a different mental file under "solar lights that ship with the worst possible NiMH cells in a product that's as waterproof as a sock". I was thinking more of rechargeable on-demand use items like flashlights, power banks, wireless phone/computer peripherals, etc. It's also a fair point that sometimes items that take aa/aaa cells will also have an onboard NiMH charger circuit and run off USB power if needed: a few mice/keyboards come to mind along with controllers. I haven't paid much attention to that since I have a healthy stock of those rechargeables and got a few wall chargers that can do individual charging.