A small light on the tip indicates active charging. On original chargers, this light only turns on when connected to the device; some third-party versions stay lit whenever plugged into a wall.
The magnetic tip is designed to detach if the cord is tripped over, preventing your Surface from falling. buy surface pro 3 charger
Standard cables are usually around 5-6 feet total. Longer 11-foot options are available if you frequently work far from an outlet. Modern Charging Alternatives A small light on the tip indicates active charging