150W Sine Wave Power Inverter by Battery Power Solutions Lets you charge small electronic devices such as cell phones, MP3 players and tablets using your vehicles battery or other external battery such as the Freedom or C-100 CPAP Battery. Features a three-prong plug and two 5V (1A and 2.1A) USB ports. Use to charge the Freedom or C-100 CPAP Battery in a vehicle. The vehicle does not need to be running during the charging process; however, when charging any electronic device or external battery in a vehicle, it is recommended that the vehicle be running during the charging process to prevent draining the vehicle's battery. Allows the Freedom or C-100 CPAP Batteries to power certain PAP devices including ResMed S8, Fisher & Paykel ICON, Transcend, 3B Medical, and Apex Medical models. Soft Start Technology (SST) gradually and safely ramps up the output voltage to start difficult motorized loads and protects sensitive appliance circuits. Turbo cooling fan prevents thermal runaway and extends the life of the inverter by keeping it cool.