And just to confirm: to charge the uniots, all you do is plug them into the charger box, right? No need to press that button, or do you have to? I only press it to check the charge but I wonder if I actually have to press the button to start charging, hmmm.
When charging, the units lit red for a bit and then everything turns off (a few minutes), but it's still charging, tight?
Sorry for all the questions, I'm trying to make sure it's not user error before I try to open these and see if a new battery fixes things, or even just get another, as I really like the design (if it works, and yours seems to!).