Connected to power via usb-c no leds. Tried another computer and cable. The port does charge my phone. This was left in a sealed bag in a lab for several years, so I think the battery might be dead but this is just a complete guess and the battery appears to be spot welded. My next test is supplying power from a pixhawk4 to 5v and ground
That’s pretty odd…the battery is decent size (800mAh) and charges SLOWLY (1mA), so maybe leave it hooked up for a day or so and see if anything changes after testing with 5v?
For anyone in the future it requires 3.3v power on the pi port. It will not turn on just via usb power