From what I’ve understood, power banks are quite different when it comes to features and behavior.
What do I look for?
I have two medium sized power banks.
I’ve used both for driving the same red light pad. With PB 1 I need to remove the cable, then reinsert it between each timer application. With PB 2 the simple LED display said OFF even after the first session had concluded. That’s where it starts when I initially plug in. The device remembered the settings.
Can you tell me if this has anything to do with what I’m looking for? I’m guessing PB 2 is better, but I don’t know if what I observed tells me if it will work well. I was hoping you would know. I can test with a meter later on what small charge the controller draws when the pad is off. But PB 2 also has two outlets. The 1A outlet wasn’t powerful enough for the pad, but maybe for the M1 or C5?