* Universal Cell Phone Battery Car Charger. * Universal battery car charger charges cell phone, PDA and digital camera batteries regardless of size, capacity and shape. * One charger can charge different cell phone, PDA or camera batteries on the road. * Adjustable positive and negative contacts accommodates various batteries. * Universal battery charger allows you to test the positive/negative connection before you begin charging. Also, no power is applied to the battery if the polarity (positive/negative) is reversed to prevent short-circuiting the battery. Spring-hinge clip holds battery in place while it is being charged. Advanced CMOS microcontroller chip manages the charging process for safe, rapid and reliable battery charging. * Suitable for any cell phone, PDA, PDA cell phone and digital camera batteries. How to use this battery car charger: * Align metal contact pins to the metal contacts on battery. Some batteries have more than 2 battery contacts, begin by aligning with the left- and right-most battery contacts. * Press the spring-hinge clip to open it and insert battery. You may need to re-adjust the metal contact pins to line up with battery contacts. * Make sure the metal pins make contact with the battery contacts. It does not matter which pin lines up with the positive or negative contacts on battery. * "CH" light flashing indicates your battery is being charged. * "FUL" light indicates your battery is fully charged. * Compatible with 12V or 24V car power output. Short circuit protection and CE approval.