User and Device Saftey:smart protection from overvoltage,overcurrent,overload,short-circuit,etc * Meet the needs of original specification,100% compatible with your laptop and the battery * Brand new raw material and high quality components * Small output voltage ripple,due to anti-jamming and input power filtering design * Cool running due to high-effiency power conversion,less energy wasted * Automatic reset for shut down conditions, recovery by itself * Rugged housings built for heavy duty and long usage performance * Strictly Aging & Triple tests before packing ensure the reliable quality