Power Delivery 3.1, however, offers a whopping 240W of power by pushing the voltage up. PD 2.0 and 3.0 over USB-C have the same 100W power rating as PD 1.0 over Type-A/B connectors. USB-C Power Delivery comes in two power levels. PD 1.0 on USB Type-A/B upped this to 5A, offering 100W of power. That’s four times as much as the base-level USB standard. The first version of USB Power Delivery running over Micro-USB offered 60W at 3A, which means that it’s also pushing 20V. Quite a few proprietary USB fast-charging methods have been developed to address this, and USB PD exists as a way to accommodate these growing power needs in an industry-standard way. ![]() Fast-charging smartphones, tablets, and modern laptops can easily meet and exceed that number. USB Battery Charging (BC) 2 offers the most watts at 5V and 5A, totaling 25W. However, as the Amps go up you’ll run into various issues such as needing thicker wiring and of course, the level of current can quickly become dangerous. ![]() Since the total wattage that can be delivered is a product of voltage and current, the only way to give more watts at 5V is to increase current. Why are USB power standards so limited? The answer is somewhat complicated, but the common denominator here is that all of these standards, even the latest USB-C standard, operate at a mere 5V.
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