[kamm]

Originally Posted by NatCh

I recall some articles a couple of years ago about some fairly promising battery advances, but they'd only advanced as far as the lab, at that point.

Here are a couple:
https://www.mobileread.com/forums/showthread.php?t=7677
https://www.mobileread.com/forums/showthread.php?t=10169

Yeah, it's getting ready but, as always, you need to reach the level when the scale, the economics get behind it so it becomes cheap commodity technology.

Also mfrs try to attack problems multiple ways simultaneously - witness all the hype about OLEDS, it's all about their power efficiency while retaining most of the characteristics we like in LCD (thin, lightweight, quick etc.)