Asus Transformer Pad Tf300t -- 5v USB Ac Power Adapter Wall Home Travel Charger + USB Car Auto Vehicle Cigarette Lighter Charger (Plus Free Scalar Anti Radiation Chip) Plug never heats or overcharges the battery. Intelligent IC chip inside recognizes a full battery and automatically switch to a saver. Short circuit protection. LED charging indication. Converts cigarette lighter to 1 USB port for charging. Cable not included. Buy with confidence, this product access CE and ROHS certification , quality is as good as you find FREE GIFTS; SCALAR ANTI-RADIATION STICKER TO PREVENT BRAIN DAMAGE IN THE LONG RUN - MADE IN JAPAN ORIGINAL (WORTH $2.99). THIS IS 5V USB DEVICES. PLEASE BE AWARE, IT WILL CHARGE 1/3 TIME LATE THEN ORIGINAL ONE.