Power Bank with no "on button"

There are some that you have to turn on but automatically turn off. Have one from walmart myself for my phone that shuts off on it's own if my phone isnt plugged into it.

I have no idea if that would work with a light though.

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I've been browsing Amazon and I don't think one exists. Maybe it has to be switched on in order to not lose the charge.

they exist

some have accelerometers and turn on when moved

just gotta hunt.

mine might be a specialty item as I got it as corporate swag, but it's
a no-button movement-sensing powerbank 7000mah

Both Xiaomi power banks that I have (they are both 10KmAh) are fully automatic, no need to press any buttons at all. when you plug in phone or any other device that consumes power, power bank will turn itself on and when you unplug it it will shut off after about 5-10 seconds.
It also shuts down if the power consumtpion is very low so you cant use those small usb pcb lights with 3 or 6 leds if you put it in lowest mode because they consume very litle power. Same principle shuts off the power bank if you left you phone pluged in, when phones battery is almost full it reduces current draw significantly (to under 50mA) so power bank shuts off automaticly.

That Magicshine connector looks pretty clever!

I'll check out the Xiaomi power bank.

Thanks!

RS VR6 said:

I'll check out the Xiaomi power bank.

How does it work for you?

I think voltaic systems has an always on powerbank.