For some wireless chargers that you invest in, it actually will not come with an AC adapter. Even though this is wireless charging, the base still needs to be plugged into a power outlet. Technically, this is still wired but this is the most reliable way to do so. Either way, some manufacturers will not include one and they probably believe that you already have one. Indeed, your current AC adapter should work just fine. However, you do need a QC 2.0 adapter if you want to utilize the fast charge capability.