Gomadic Car and Wall Charger Essential Kit for the Sirius StarMate ST2 - Includes both AC Wall and DC Car Charging Options with TipExchange Gomadic TipExchange Technology protects your investment by allowing you to change/upgrade either charger by simply swapping the physical charging tip. (Charging tips for Sirius StarMate ST2 included with additional tips sold separately). This Gomadic Car charger has a wide input voltage range of 12-24vDC to support all vehicle charging ports. Works in cars, trucks, planes, boat, RVs and more (both domestic and international). Available output current is an impressive 10W/2A . (Twice most competing products!) Gomadic Wall Charger is built to support worldwide voltage input levels ranging from 100-240vAC /50-60 Hz. High output 10W /2A transformer provides output voltage and resistor configuration specific to the Sirius StarMate ST2. Kit includes two essential Sirius StarMate ST2 accessories in one convenient package. Gomadic Car and Wall chargers employ latest state of the art advancements in charging and surge suppression technologies to deliver products in an unbelievable micro-sized form factors.