Garmin edge 130 wont turn on unless on usb or power

same here. I just bought Edge130 and it wont work unless on cable... seriously?

turns it off immediately after power source is disconnected?

yes exactly

So the battery is dead. I had the same issue with my brand new unit purchased from official reseller (in Poland) a few days ago. I've also tested it with usb power meter, and it won't even start to charge, power consumption about 10mA, just enough to power up the device. 

The unit was replaced to the new one the next day. 

You can do one extra test. Plug it up. When the Garmin logo appears, hold lap button (lower left) till service menu shows up. Most likely Battery  values will be "4.35 100" so that means all power is delivered by cable not from battery.

Me too - 130 brand new out of the box is completely dead. Works when it's plugged in and shows full charge, but no matter how long I leave it charging instantly shuts down when I unplug it. So dissapointing.

Me too - 130 brand new out of the box is completely dead. Works when it's plugged in and shows full charge, but no matter how long I leave it charging instantly shuts down when I unplug it. So dissapointing.

I purchased it in 2018 and was working like a charm, but dug it out after one year and battery is dead as you describe. Tried charging overnight from the wall and on the computer. Seems the battery quality is poor and conks out after a set period from manufacture. Disappointed as well.