65W GaN USB C Charger,Dual-Port Fast Wall Charger,PD 3.0 & QC 4.0,Foldable Plug for MacBook Pro/Air, iPhone 15, iPad Pro, Galaxy S24, Steam Deck & More (Black-2C)

Don't know what what these other comments are talking about but you can definitely charge two batteries simultaneously if you use a 65w block. I use this one so it can store easily in my hard case. Just so you know, it will start with the battery with the 2nd lowest percentage and charge that one until it matches the battery with the highest percentage and then it will charge both of those to 100% at the same time. Charging the one that was left behind at the end. Edit: typo 2nd edit: charge order correction and photo added