The Tekpower TP1803D variable DC power supply is a compact and affordable instrument that is suitable for both home and industrial use. This digital DC power supply has maximum output voltage of up to 18 volts and current up to 3 amps. It comes with rotary switches for setting up the voltage and current. With its reliability and versatility, it's an invaluable and indispensable tool for testing, science project and etc., ideal for labs, research institutes, R & D facilities.Tekpower TP1803D Variable Linear DC Adjustable Power Supply 0-18V - 0-3A. I Have using this to charger my Dirt Bike Speed Cell Lithium Battery for 3 years. I no Longer own the Dirt Bike and this can now go . . .