The ReMOTE can be powered from USB, from batteries or from an optional 9V DC power supply. If rechargable batteries are fitted into the ReMOTE, these can be recharged by the ReMOTE either by the USB power supply or by connecting to the optional 9V DC power supply. The optional power supplies can be ordered from a Novation distributor or they can be ordered directly from Novation by contacting us through the contact form on this answerbase . The correct power supply is Novation part number PSU-6, 9V DC centre pin positive 600 mA output.