Simply pop in the battery, push the lever on the side and well, that’s the beauty of it… you already know how to use this little guy. There’s also a helpful LED on the front to indicate the progress of the charge for the hopelessly impatient. “Toasting” your lithium-ion batteries is, at first glance, a little weird, right?

[via Engadget]

Yeah, designing a charger to look like a toaster is pretty kitschy. But it sure got me thinking… having a clear, visual and visible indicator of battery charge would be a huge improvement over my current (sorry) situation.

On the one hand, I keep reading urgent articles claiming that 30% of cell phone energy use is actually wasted electricity spent on chargers left in the sockets (or plugged in to already-charged phones). On the other hand, of my many phones, only one keeps a message on the display to tell me “Battery full: please remove charger” (another one keeps a single chirp as the “battery full” alert). Not that it helps a lot when the phone has been left to charge overnight, but still.

I wouldn’t want to remove the battery from my phone every day or two for charging (especially since that would turn the phone off — I don’t keep spare batteries much). But I would love to have a smart charger that turns itself off once the device battery is full. (If it would turn itself back on when the device got back down to, say, 50%, all the better.)

How about it? Anyone want to have a stab at making/marketing it?