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   SDC-120-12-90   CONVERTER / CHARGER Specification Sheet in PDF format Installation Manual in PDF format Warranty Information


The SDC-120-12-90 Power Converter/Battery Charger from IOTA Engineering converts nominal 108-132 AC voltage to 13.4-14.8 DC voltage for both DC load operation and 12 V battery charging.

As a power supply, the unit's tightly controlled regulation allows the user to operate a nominal 12VDC load up to 90 amps.

As a battery charger, the unit will maintain the battery, delivering its full-rated current when the battery capacity falls sufficiently low. The voltage is set to deliver its maximum current for the necessary period of time to minimize undue stress to the battery caused by heating of its cells. This helps to ensure the longest possible life of the battery. Over time, as the battery nears its full capacity, the SDC-120-12-90 will automatically drop the current, providing a float-charge to the battery to prevent self-discharge of the cells.


UL and CUL 458 Listed

Clean, steady DC output operates your loads the way they were intended, avoiding potential damage to systems from errant DC voltage.

Built-in protection features guard the unit against erratic line voltage that can occur from shore power or generator supplies

2-Gauge max. connection capagility decreases voltage drop for better battery charging and increased installation distance.

Reverse Polarity Protection with simplified fuse removal protects the unit against damage from incorrect battery hook-up.

Proportional fan control starts and stops slowly and operates at speeds directly proportional to unit temperature for whisper-quiet operation.

Backed by IOTA with a full Three-Year Warranty.

Optional AmpLife charge control module for exceptional charging and battery life. To include the AmpLife Charge Control Module with any SDC1, add the -AL1 suffix to the model number

DC Output Voltage** 13.4-14.8 VDC
Output Voltage Tolerance (No Load) + or - 0.7%
Output Amperage, Max Continuous 90 Amps
Maximum Power Output, Continuous 1350 Watts
Ripple and Noise <50 mV rms
Input Voltage Range 108-132 VAC
Input Voltage Frequency 47-63
Maximum AC Current @ 108VAC 21.8 Amps
Typical Efficiency >80%
Max Inrush Current, Single Cycle 40 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- 40C
Storage Temperature -20 to 80C
Withstand Voltage (VDC)* 1700/1700/500
Dimensions 12.5" x 7.75" x 2.9"
Weight 8 lbs

*Primary to Chassis/Primary to Secondary/Secondary to Chassis

**Output voltage range capability provided by an SDC1 charger equipped with an AmpLife AL1 charge controller. Voltage range for non-AmpLife units is 13.4 to 13.6 VDC.