When I first picked up the ESR Geo Wallet Boost last year, I had a thought: I was either living in the future or an absolute moron for plugging my wallet into a wall charger. Obviously, charging your wallet sounds like a massive hassle on paper, but after using it off and on, I can confidently say the functionality you get is completely worth the minor inconvenience of charging, as it feels more like charging a Kindle here and there vs something you really worry/think about.