https://www.theverge.com/circuitbreaker/2018/6/7/17437550/anker-nintendo-switch-battery-pack-usb-c-pd-fast-charge-partnership-powercore

The Nintendo Switch is a fantastic option for gaming on the go, but playing demanding console games while you’re out and about can seriously drain your battery life. Now, if you need some extra juice while you’re out, Anker has you covered with two new USB-C battery backs that have been specifically designed to quickly recharge Nintendo’s portable console.

Now, the Switch uses a standard USB-C port for charging, so pretty much any USB-C PD battery pack with a high enough power output will work in a pinch. But Anker’s new packs claim to be different: both power banks have been calibrated specifically for fast-charging the Nintendo Switch. Anker claims that players can fast-charge their consoles in less than three hours, even while still playing games.