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This Sure Power product is designed to provide 12V to 24V power conversion for heavy-duty
The equalizers provide equalization for dual battery systems where the charging system is 12V.
• Under and Over Voltage Protection
• Reverse Voltage Protection
• Voltage Transient Protection
• Over load and Short Circuit Protection
• Thermal Overload Shutdown
• Equalization Status Indicator
• Sealed from the Elements
• Ignition Turn On
Theory of Operation
The 12010X00 Sure Power equalizers and converters are designed to step up the input voltage in
order to achieve the appropriate output voltage.
The equalizer monitors the input voltage at the terminals and provides an output that is twice the
The converters provide a fixed output to power 24V loads directly from a 12V source.
Description of Features
Included are a number of protection and added features.
Reversal of the input polarity is protected with MOSFETs in series with the ground.
Reversal of the output polarity is protected with MOSFETs in series with the output connection.
A Metal Oxide Varistor circuit is used to protect the input from load dump and inductive transients.
Input under-voltage and over-voltage conditions cause the unit to safely turn off.
Short circuit and current limiting protection is supplied by monitoring the input current. Detection
of a short circuit or overload turns the output off. The unit then cycles the output on every 1.5
seconds to determine if the short circuit has been removed. Upon removal of this condition the
output voltage will return to its normal state.
Thermal protection is provided by monitoring the unit temperature. Detection of extreme
temperature shuts the unit off. When the heatsink cools, the unit will automatically turn back on.
Loss of ground protection ensures no damage occurs to the unit.
Unit is protected against all miswiring conditions with the exception of the condition where: Unit
ground is connected to system Load, unit +12V is connected to system +12V, Unit +24V is
connected to system Ground and unit ignition is connected to system +12V.
An LED status indicator is provided to denote when the unit is producing current. As the batteries
become equalized and the charger current approaches 0 amps, the LED indicator will diminish in
intensity and eventually go dark.