No more worrying about your 9V batteries dying mid song when you have this power bank. You can also forget about searching for a wall outlet on stage to power your pedal board. The RockBoard Power LT XL power bank is equipped with powerful, 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 power bank is approximately 7 hours.