If your Ps3 is powered off, any connected peripherals PS3 Controller say for example a controller will not be charged. If you wish to charge 7 inch tablet the controller, the ps3 controller charger must remain powered on. When you plug your Playstation 3 controller in the USB PS3 accessories port of your computer, it is going to fully PS3 slim charge provided that your computer is on, regardless of whether it truly is in sleep mode. Additional charging stations can be acquired that can recharge multiple controllers previously. These stations are plugged into an ordinary wall plug. 745TDBanty 130131