Manufacturer's Description:

Freedom to perform anywhere! The RockBoard RBO Power LT XL is a rechargeable power station for effects pedals, independent from the wall outlet. No more worrying about your 9V batteries dying mid song. You can also forget about searching for a wall outlet on stage to power your pedal board. The RockBoard RBO Power LT XL is equipped with powerful and long-lasting, rechargeable lithium-ion batteries, to supply effects pedals up to approx. 50 hours or more with hum free 9V DC current. Recharge time for the unit is approximately 7 hours.

Manufacturer Specs:

• Mobile rechargeable power station for effect pedals
• Can also be used to charge smartphones and other usb devices
• 3 high-performance li-ion batteries
• 6,600 mah battery capacity
• Rechargeable while in use
• On/off button
• 2 x separate 9v dc outputs, 2,1 x 5,5 mm, polarity (-) center (1,000 ma each)
• 1 x usb output (5v, 1,000 ma)
• 1 x micro-usb input (5v, 1,000 ma ) for charging
• Charge level indicator with 4 leds
• Includes:
  • Power supply/charger (5v, 1,000 ma)
  • Multiple power adapters for worldwide use
  • 1 x usb to micro-usb cable (50 cm)
  • 2 x power cables (50 cm)
  • 1 x daisy chain cable with 5 outputs (155 cm) 
• Charging time approx.: 7 hrs 
• Dimensions (w x h x d): 115 × 22 x 58 mm
• Weight: 230g