Super Power Supply&reg; DC Car Charger Adapter Cord for Bose Soundlink I, II, III, 1, 2, 3 Portable Sound Link Wireless Mobile Speaker System 10 306386-101, 301141, 404600, 414255 Barrel Plug Output: 20V 2A 40W / Power laptop and charge battery from 12V DC outlets (car / air / boat) Warranty: 1 Year Super Power Supply adapters are manufactured and tested to match or exceed OEM products. Trademarked by Super Power Supply. Sold exclusively by Super Power Supply. Features a USB Port for Charging USB powered devices.