RAVPower 24W Dual 2.4A USB Wall Charger with iSmart Technology. Our good friends at RAVPower provided me with this great USB wall charger to try out and review! I know what you guys are thinking, "A USB wall charger... Really?" Yeah, a USB wall charger! These things are a MUST for the techie in your life and instead of getting a low powered one, you need to make sure that you get one that can handle the most demanding of gadgets! So before I get into my experience with this wall charger, let's talk specs!