Schumacher XC75 Operating instructions, Charging, Automatic Voltage Detection, Thermal Runaway

NOTE: Once the charger has started charging the battery; if you press the Charge Rate button once, the output current is shut off and the display with show OFF and then the battery voltage. If you press the Charge Rate button again, the current will go back on at the same setting it was when it was turned off. For example: The charger is charging a battery at the slow charge rate setting. If you press the Charge Rate button, the output is turned off. If you press the Charge Rate button again, the output will turn back on at the slow charge rate setting.

11.Operating instructions

This battery charger must be properly assembled in accordance with the assembly instructions before it is used.

The charger does not have an ON/OFF switch. The On and Off commands are controlled by plugging the charger into a 120V AC electrical wall outlet only after the battery connections have been made.

Charging

1.Ensure that all of the charger components are in place and in good working condition, for example, the plastic boots on the battery clips.

2.Connect the battery following the precautions listed in sections 6 and 7.

3.Connect the AC power following the precautions listed in section 8. Make sure to place the charger on a dry, non-flammable surface like metal or concrete.

4.Select the appropriate settings for your battery.

Startup Defaults: When first turned on, the charger will default to the following startup settings:

•Battery Type: Standard

•Battery Voltage: 12 Volts

•Charge Rate: OFF (No charge rate selected)

After 10 minutes if no buttons are pressed or no charge rate is selected, the charger will automatically start charging at the following defaults:

•Charge Current: The lowest charge rate setting available, usually 2 amps.

•Charge Voltage: The lowest charge rate voltage available, usually 14.7 volts (Gel Cell), if not, then 15.4 volts (AGM), otherwise it will be 16.0 volts (Standard battery).

Automatic Voltage Detection

When the charger is connected to a battery, it will automatically determine whether the connected battery is a 6 volt battery or a 12 volt battery. This eliminates the possibility of using the wrong voltage setting. The display will show either 6 or 12 depending on what battery voltage the charger detects.

Thermal Runaway

As a safety precaution, the charger will automatically reduce the output current if it detects the battery may be getting too hot.

NOTE: This charger is equipped with an auto-start feature. It will not supply current to the battery clips until a battery is properly connected. Meaning, the clips will not spark if touched together.

Battery Percent and Charge Time: This charger adjusts the charging time in order to charge the battery completely, efficiently and safely. The microprocessor automatically performs the necessary functions. This section includes guidelines that can be used to estimate charging times.

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