Auto Charge SD 150

Product Code: 091-168-12


  • 50A, 12V charge rating
  • Automatic operation regulates output to a single battery bank
  • A patented built-in sense circuit checks battery voltage 120 times per second to compensate for voltage drop in charging wires providing quick re-charge, with no overcharge 
  • Provides automatic boost voltage (14.25V) for rapid recovery. After 1 hour, switches to normal float voltage (13.25V), no overcharge
  • Boost voltage conditions battery plates for longer cell life
  • High temperature protection circuit, shuts down charger and activities alarm. Operation automatically restored when safe temperature is reached
  • Designed for rigors of emergency vehicle use; heavy duty aluminum case with protective front panel plate and wire strain relief
  • 3 year warranty
Charger with Battery Bank Single
Charger, Output Amperage 50
Battery Saver Only No
'PLC', Chargers with Parasitic Load Compensation No
Charger with Remote Display included Yes
Charger, Output Voltage VDC 12
Charger, Input Voltage VAC 120
Charger- Hz 50/60
International No
Charger, Low Profile Design No
Charging Profile Float
Input Fuse 20 Amps, Slow Blow
Input 120 Vac, 50/60 Hz, 15 Amps Max
Output 12 Vdc, 50 Amps
Output Fuse 100 Amps (Part Number: 090-0100-0)
Warranty 3 Years
Weight 40 lbs
Charge Indicator Remote Bar Graph Display, Indicates Voltage and Current of Battery
Voltage Sense Remote, Electronic, No Sense Wires Required
Indicators Power, Battery Connected, Equalize, Hi Resist, Hi Temp, Hi Volt Low Volt, Shutdown, Low Volt/Low Current, and Fan
EV Series No

The Auto Charge SD 150 is a state of the art, high output battery charger that provides a rapid recharge for an emergency vehicle's battery. A special equalizing circuit raises the charger's output voltage for 1 hour when the charger is turned on. This reduces the time required to charge the battery and helps rejuvenate the battery's plates. At the conclusion of the equalize period the output switches to the normal float charge mode. The patented "sample and hold" circuit precisely measures the battery voltage eliminating errors due to voltage drop in charging wires. 

A series of diagnostics continually checks the operation of the charger. LED's indicate normal and abnormal operation. Excessive output voltage is detected, as are insufficient output, high temperature and high resistance connections. An LED also indicates when the battery is disconnected. The remote indicator is a dual bar graph indicating both charger voltage and output current.