Lead acid battery charger(Indoor use only) 1、 Full Range Input(90-264V 50/60Hz); 2、 Real Charger-with current feed back control; 3、 Single Bi-Color LED; 4、 Three Steps:Fast/Maintain/Floating Charging; 5、 No fan-by nature convection cooling; 6、 No Battery,No Charge; 7、 No Spark-During battery connection; 8、 Low EMI Noise.