INIU 140W Laptop Power Bank, Flight-Safe 27000mAh High Capacity Portable Charger with USB C Cable, Digital Display Phone Charger, 3 Ports Travel External Battery Pack for MacBook iPad Steam Deck etc

I'm a university student without a big ol' gaming PC and the ROG Ally X serves me very well. For accessories, these are what I recommend: INIU 140W 27,000mAh power bank (https://www.amazon.com/dp/B0CB1FWNMK): Good capacity to squeeze more time out of your ROG Ally on the go, and has the capacity to charge other devices like external controllers, external monitors, phones, laptops, etc. It fits nicely in my backpack in one of the mesh pockets inside the second largest zipper. For a wall charger, I'd go for a nice 100W charger like this INIU one (https://www.amazon.com/dp/B0CB1D82NB). True, your ROG Ally will only need 65W max for charging and turbo mode combined, but the extra I/O is nice because you never know when you'll need to charge other devices. I know I charge my other things frequently. And get this: with 100W charging, you can refill 80% of your power bank in roughly an hour, so it's easy to keep it topped off and ready for portable charging.