Information & Inspiration For
MG Electric Vehicle Enthusiasts
MG Electric Vehicle Enthusiasts
bc1.2 charging
**BC1.2 charging** refers to the **USB Battery Charging Specification Revision 1.2**, a standard defined by the USB Implementers Forum that specifies how devices can draw power over USB for charging.
It defines three types of USB ports:
- **SDP (Standard Downstream Port):** Up to 500 mA (USB 2.0) while supporting data.
- **CDP (Charging Downstream Port):** Up to 1.5 A while supporting data.
- **DCP (Dedicated Charging Port):** Up to 1.5 A for charging only (no data).
BC1.2 also defines how devices detect these port types using the USB data lines to safely negotiate charging current.
It defines three types of USB ports:
- **SDP (Standard Downstream Port):** Up to 500 mA (USB 2.0) while supporting data.
- **CDP (Charging Downstream Port):** Up to 1.5 A while supporting data.
- **DCP (Dedicated Charging Port):** Up to 1.5 A for charging only (no data).
BC1.2 also defines how devices detect these port types using the USB data lines to safely negotiate charging current.