JOYO Built-in 4400mAh Rechargeable Battery Guitar Effect Pedal Power Supply 8 Outputs 9V 12V 18V (100mA, 500mA) Jacks & 5V/1A USB Port (JP-05)With a built in 7. 4V 4400mAh rechargeable lithium battery pack, charging time is about 2. 5hrs. Lasts 2 hours with high current digital effect pedals; lasts more than 10 hours with 8 analog pedals. One 5V 1A output USB port, compatible for charging cell phones, tablets and some other portable devices. Bright LED for effect pedal board lighting & battery level indicator, automatically stop charging be fully charged. 8 DC Output Jacks: 4 jacks 9V