Full wave double ic (13003+945) with optical coupling ic 817 to protect the whole circuit. Led: red , then red when charging, with over voltage protection circuit. Voltage: 5.5-5.9v, with load voltage Output: 450-600 mah Plain PCB thickness: 1.5mm Can afford highest voltage:280v, lowest voltage:90v Cable : 3.5thickenss *1.5length , 12cores copper Pin : 4.8thickness Casing : ABS material. Paper box packing or blister packing.
