I tried this with my hotspot at home. No, it did not work. When the battery was removed, I could not get the hotspot to turn on despite receiving power via micro USB. When powered off, the red battery charging light comes on. But when you turn it on, all of the lights go off. So it appears the charging circuit is not capable of powering the unit.
Honestly, I was surprised. I had expected it to work as well. In the same way a laptop will work without its battery. But I haven't tried something similar with a phone, for example, with a removable battery (as all my phones are iPhones).
Thank you! I know most phones behave like that too. Without a battery of some sort they will not function. I may have to either take the device apart and use an electronic switch to turn on the hotspot or make a fake battery.
Do you know about how long it takes to boot if the battery is dead flat?
I purchased this hotspot for use in my car as well. It does require the battery to boot up, but as long as it is plugged into an outlet in your car that gets power when the car is started, it boots up immediately. Of course, you will want to make sure the outlet in your car turns off power when the car is turned off so that you don't run down your car battery. The hotspot will then continue to work until the battery in the hotspot runs down.