MagSafe charges 2x slower than 20W wired charger
I’m not entirely surprised, but that real-world time difference — 28 minutes wired to 1 hour MagSafe — is a big striking difference.
If you want a wired charger, I recommend this 30W GaN charger from Anker or this slightly cheaper 20W charger.
Anker PowerPort Atom PD 4 outputs 100W over USB-C PD
This is it. THIS is the charger I’ve been waiting for Anker to release. The new PowerPort Atom PD 4 charging station outputs a full 100W through USB-C PD. It can even split that 100W in half to charge two 13” MacBook Pros at full power. With one connected, you can charge a 15” MacBook Pro at full speed without worrying about trickle-charging or no charging due to the computer’s power consumption.
Is there no better way to keep the new USB-C laptops from Apple charged while on location?
I've searched high and low for a suitable option to charge the 2016 and 2017 MacBook Pros with USB-C/Thunderbolt 3 ports and so far the only option seems to be this: The Omnicharge Omni 20.
The Omnicharge Omni 20 is a 20,400mAh portable battery capable of delivering up to 100W via the AC outlet. This is the only external battery that can not only power the 87W MBPs (15-inch) but also charge them during use (an important factory when shooting on location). The only downside here is that you would have to carry the full AC charging unit along with this Omnicharge external battery.
This leaves plenty of room in the market for an external battery that could make use of the high-powered USB-C ports for charging without needing to lug around the Apple AC adapter for the computer. If somebody would put this type of battery out with a high enough capacity, I guarantee you at least a good number of sales in the photo industry alone.