QQ:*********3 *-*:*@********************table cellspacing="1" cellpadding="1" border="1" style= "width: **0px;"> Model PCA**5A**2 PCA**5A**4  PCA**5B**2  PCA**5B**4  Input Voltage Range ******0VAC ******4VAC AC Current         0.*3A/**0V 0.4A/**0V 0.*1A/**0V 0.*7A/**0V Frequency Range         ****3Hz Power Factor 0.*2   Output Boot Charge Voltage        *4.4V *8.8V  *4.4V  *8.8V Float Charge Voltage       *3.7V *7.4V  *3.7V  *7.4V Charge Current  5A 3A  5A  3A Recommended Battery Capacity  ****0AH ***0AH  ****0AH  ***0AH Protection Over Voltage  *5.5V    *1V  *2V Over Temperature The temperature reached *0 ℃ derating, Close output to *0 ℃; automatic recovery after temperature drop. Over Current     YES, protected by internal circuit Reverse Polarity YES, protected by internal circuit  Function Remote Control Open: Normal work Short: Stop Charging Fault Output Transistors,*2V/*0mA Temperature Compensation By NTC Environment Operating Temperature **0℃~**5℃ Operating Humidity *0~*0ï¼…RH Storage Temp,Humidity **0~**5℃，*0~*5ï¼…RH Others Packing **0g **0g Dimension  **5***8.6**7mm **3**0***2mm