Since the NitroPad can be charged using a less bulky and heavy USB-C wire, is there any reason to use non-standard charger that comes with the laptop?
Which USB-C wire should I buy to obtain the best results?
This is totally possible, make sure to have the same power rating that is written on your current power cable.
If a USB-C cable can be used, then why does the NitroPad come with such a bulky and heavy charger? What’s the reason to keep it around at all?
My guess is that when the battery is completely drained, there is not enough power to even bootstrap the charging via USB-PD, so in that case one needs the traditional charger. I don’t know for sure but I’ll soon find out since the bulky charger is getting flaky.
Shouldn’t USB-PD only allow the correct, supported, safe power delivery settings during negotiation? For example, is it dangerous that I currently have a 67W USB-PD cable plugging into my V56 NitroPad and the power indicator suggests it is plugged in? Shouldn’t the laptop reject that as a power source rather than doing something silly like drawing 90W from a 67W-rated source?
Right it has protection but if it has for example the wrong voltage or if it’s too weak it won’t charge the NitroPad
So far the 67W max USB-PD adapter has been charging it successfully. It doesn’t always keep up with discharge, though, if I’m using more than that. Usually it is OK.
And oops, this is a V54 not a V56.
Two more reasons to use the power brick:
The USB-PD negotiation goes both ways. The charger announces capabilities, the device makes a choice, requests it and the charger sends an “accept” as reply prior delivering power. So, it is pretty safe if both devices implement it right.
As you have noticed, the device can adjust its features depending on agreed PD. I noticed similar with an SBC (not a RaspPI, same device class). It will run fine with half power delivered, but turn off some interfaces like HDMI. It’s not always obvious what the firmware does to compensate.
