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INTRODUCTION
The Auto Charge 12 HO, Model 091-170, is a high output fully automatic battery charger for vehicles
with a single battery system. A patented "Sample & Hold" circuit is utilized to detect the actual battery
voltage. This eliminates the error due to the current flowing in the charging wires and assures that the
battery is charged to the precise float voltage. A current limiter prevents overloading the charger when
charging a deeply discharged battery or driving large parasitic loads. The charger is ruggedly constructed
to assure reliable operation when mounted in a vehicle.
FEATURES
I. AUTO CHARGE 12 HO BATTERY CHARGER
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Electronic remote sensing of true battery voltage, eliminates the need for sensing wires
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Automatic current limiting
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Optional Remote Battery charge/condition indicator display
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Power "ON" LED status indicator
II. CHARGE CONTROLS & ELECTRONIC REMOTE SENSING
The Auto Charge 12 HO contains a precision voltage controller to maintain the battery's charge.
Automatic electronic remote sensing measures the true battery voltage, eliminating the need for the
additional sense wires. The output current of any charger is inherently a series of pulses whose
frequency is determined by the power line frequency. Therefore, there are brief intervals during
which no charging current flows. Since there is no charging current there is also no voltage drop
between the charger and the battery. The Auto Charge 12 HO measures and stores the true battery
voltage. This battery voltage is compared to a reference voltage, any error detected is then used to
control the charger output at the desired level. There is no "trickle charge" and therefore no danger
of overcharging and water boil-off.
III. AUTOMATIC CURRENT LIMITING
When batteries are severely discharged, some battery chargers can be overloaded due to the high
charging current required. The Auto Charge 12 HO contains an automatic current limit. The current
limit feature limits the output current to the max. amperes of the charger output when charging a
deeply discharged battery or if the starter cranks the engine while charging. The current limiter thus
eliminates the need for an ignition interlock circuit.
170 Cherry Avenue
West Sayville, NY 11796
www.kussmaul.com
Ph: 800-346-0857
Fax: 631-567-5826
sales@kussmaul.com
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