[reaperducer]

They're not out of power. They're just in some weird deep hibernation mode. Mine do this, too.

The work-around I use is to plug them in to the charging cable for a couple of seconds. They wake up, the green light comes on and everything is fine.

It's a strange problem, but it's not the specific problem you think it is.

[StefanKarpinski]

Nope, they are dead. If I happen to catch them before they fully run out of power, they are at 1-2% charge as reported on whatever device they connect to. I can prevent this if I carefully disconnect them from each device they might be connected to. But that is a massive pain and fully defeats the purpose of being able to just put them down.