12V Rechargeable Battery Pack

This Battery Pack is commonly used for the Helio V2 and the Ring Roamer.Supported Products Helio V2 Ring Roamer V2 Sapphire Ring Roamer Sapphire Helio Ring Roamer Stand Stand Alone Printer Stand ★★★Please note our battery DC port is inner Positive(+), outer Negative(-). But most guitar pedal input port is inner Negative(-), outer Positive(+). If you want to use this battery to power the guitar pedal, you must need a reversed polarity cable to connect the pedal with our battery, or will damage the guitar pedal. Our package not include this reversed polarity cable.