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Auto Charge 20
Cat. No. 091-10-12

The Auto Charge 20 is a fully automatic battery charger for vehicles with three independent batteries which must be charged. The charger contains 3 separate and independent circuits, 1 for each battery. Each battery is independently sensed and charged as required. Even though the total for all three outputs is limited to 20 amperes any one of the batteries may receive up to 20 amperes if the other batteries do not require a charge. Rugged construction permits vehicle mounting or the charger may be wall mounted. Optional indicators are available to remotely display when the batteries are charged.

  • Automatically charges three battery banks utilizing
    independent sense circuits that control voltage and current to each battery, thus parasitic loads on one battery have no effect on the others
  • 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
  • Full amperage output is available to any battery if the adjacent banks do not require charging, optimizing use of available power in charging banks with differing parasitic load rates
  • Designed for rigors of emergency vehicle use; heavy duty aluminum case with protective front panel plate and wire strain relief

Specifications: Input: 120 VAC 50/60 Hz, 4.7 Amp
Output Volts: for 12V batteries
Output Current: 0-20 amps output current determined by state of charge of batteries
Weight: 22 lbs
Warranty: 3 Years

Model# Output Voltage Output Amps Input Voltage Option Optional Indicator
091-10-6 6 20 120 V.A.C. none YES
091-10-12 12 20 120 V.A.C. none YES
091-10-24 24 10 120 V.A.C. none YES
091-10-DV-12 12 20 120V OR 230V DV YES
091-10PIM 12 20 120 V.A.C. PIM NO

optional indicators for 091-10-12

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