The DLS-55 Converter / Battery Charger converts 108-132v AC to 13.4v DC for both DC load operation such as when programming on-boad vehicle modules and 12V battery charging. 
As a power supply, the unit's tightly controlled regulation allows the user to operate a nominal 12VDC load up to 55 amps. In battery charger mode, the unit will maintain the battery, delivering its full-rated current when the battery capacity falls sufficiently low. The voltage is set to deliver maximum current for the necessary period of time to minimize undue stress to the battery caused by heating of its cells. Over time, as the battery nears its full capacity, the DLS-55 will automatically lower the current, providing a proper float-charge to the battery to prevent self-discharge of the cells.
 The unit features a Dual Voltage Jack that can trigger a step up of the output DC voltage from 13.5 to 14.2.
Ratings and specifications: 
 DC Output Voltage (No Load): 13.6V 
 Output Voltage Tolerance: + / - .7% 
 Output Amperage, MAX Continuous: 55 AMPS 
 Output Voltage (Full Load): 13.4V 
 Maximum Power Output, Continuous: 1000 Watts 
 Ripple and Noise: <50 mV rms 
 Input Voltage Range: 108 - 132 AC 
 Input Voltage Frequency: 47 - 63 Hz
 Maximum AC Current (at 108Vac): 13.4 Amps 
 Maximum Inrush Current, Single Cycle: 30 Amps 
 Short Circuit Protection: Yes 
 Overload Protection: > 100% 
 Line Regulation: 100 mV rms 
 Load Regulation: <1.5% 
 Fan Control: Proportional 
 Thermal Protection: YES 
 Working Temperature Range: 0° to 40° C 
 Storage Temperature: -20° to 80° C 
 Approximate Dimensions: 9.7" x 6.7" x 3.4"
 Weight: 5.0 lbs