15W is basically 5V * 3A, there's plenty of PSUs that offer that and more, even some of the phone chargers. My 30K mAh powerbank offers a 6A output, so there shouldn't be any problems with running RPi on batts.
I don't have one to test with, but I suspect that if you replace the hard U joint HDMI "cable" with a short microhdmi<->HDMI cable the display will continue to work just fine.
Re:Raspberry Pi 4 is here
by bayesian_horse on Monday June 24, 2019 @03:04AM
(#20261150)
Depends on the batteries, probably...
But certainly, this is not a device for a shoestring power supply. Not a Wattage-Guzzler either.
Re:Raspberry Pi 4 is here
by wrong_variable on Monday June 24, 2019 @02:34AM
(#20261015)
My Intel laptop uses 45W and it doesn't have dual 4K hdmi support.
15W is crazy low for what it is offering.
Pros:
+ USB 3: Very nice! Finally a pocket-sized, fast USB host.
+ Dual HDMI: Could be useful as a projector computer.
+ 1.5 GHz: Good, it might be fast enough for some real work.
+ Gigabit Ethernet: Excellent for those using it as a NAS.
+ USB-C for power: Not surprising, it's the standard now.
Cons:
- MicroHDMI: Incompatible with the 800x480 HDMI 3.5" screen [1]. Also different again to the MiniHDMI on the Pi Zero (will there be a new Pi Zero soon? Who knows.)
- Power consumption! They recommend a 15W power supply, which means I'm pretty sure this won't run on batteries.
[1] https://www.aliexpress.com/item/New-3-5-inch-800x480-IPS-LCD...