USB Travel Charger Cable for Bose SoundLink Mini Bluetooth Wireless Speaker v1 power adapter MAX: 1.2A 5V USB Port. Using 2A port will overheat charger. Output voltage DC 12V Output current 500mA Note: Micro USB cable sold by other sellers are NOT for charging, to update Bose Soundlink v1 Mini Firmware only. This item charges your Bose SoundLink Mini V1 first version