Source: Android Central
Best answer: Yes, the Kishi allows for pass-through charging using the Type-C port on the bottom-right of the controller. The Kishi itself doesn't require any charging. Just keep in mind that this charging port does not work with any other USB-C accessories like headphones.
- Battery-free controller: Razer Kishi ($80 at Amazon)
- Multi-length USB-C: WiRoTech Blue USB-C to USB-A Fast Charging Cable ($8 at Amazon)
- Fast-charging power bank: Anker USB C Portable Charger ($50 at Amazon)
- Long-lasting Bluetooth headphones: Tribit XFree Tune Bluetooth Headphones ($33 at Amazon)
A seamless charging option
To plug your phone into the Razer Kishi, you slide the USB-C connector into the USB-C slot on the inner-right side of the Kishi. You can still charge your phone with its port blocked, and south of the Kishi's right joystick, you'll find another USB-C port, which allows for pass-through charging.
The Razer Kishi drains your phone battery from the moment it's plugged in, even if you're not using it for anything. If you're at home, you can simply use your phone charger and stay seated next to an outlet. However, if you want to play on the go, it's worth investing in a compact power bank with USB-C ports and fast charging enabled. That way, you can use your Kishi freely without worrying about your phone dying while you're out and about.
You also don't have to worry about charging cables getting in the way of other USB-C accessories. As mentioned above, the Kishi USB-C port only works for charging; you won't be able to use wired headphones while gaming with the Kishi. That's why you should also look into some solid Bluetooth headphones, so you don't drive others crazy by blasting the sound on your commute or in the office.
Battery-free controller

Razer Kishi
USB-Charged
The Razer Kishi fuses with your phone to become one easily chargable, handheld gaming machine. Leave behind laggy Bluetooth controllers with separate charging cables to keep track of.
Multi-length USB-C

WiRoTech Blue USB-C to USB-A Fast Charging Cable
Cheap and colorful
You probably have plenty of phone charger cords already, but for a quick, versatile replacement, WiRoTech provides the best option. You can choose between tons of different color options, and more importantly between 1, 6 and 10 feet. A short cable between your Kishi and your portable charger is best for on-the-go recharges.
Quick charge power bank

Anker USB C Portable Charger
So much juice
Its 18W output, USB-C and USB-A ports, and travel pouch make this Anker model useful for fast recharges on the go with practically any device you own, including your smartphone. Plus, its massive 20,000mAh capacity means you can recharge devices multiple times before it runs out of juice.
Long-lasting Bluetooth headphones

Tribit XFree Tune Bluetooth Headphones
40 hours of good sound
For solid sound quality at an excellent budget price, Tribit has your best value option. Their 40-hour battery life allow you a full work-week of sound before you'll need to recharge. They're also comfortable and cool against your ears for hours-long mobile gameplay sessions.
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