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The digital display will show the external battery voltage when the power pack is connected.
If the polarity is incorrect on the battery connection, there will be no display. Pressing the in-
ternal battery voltage button will display the internal voltage. When the power pack is being
recharged, the meter will show charging with the letters CH and animation speed depend-
ing on the amount of current flow. When the unit is fully charged, the display will read FUL.
The yellow Low Voltage LED indicator light will illuminate whenever the Rescue 3100 is
turned on and the external voltage at the clamps is low, or they are not connected. This
is normal. See the section on using the Rescue 3100 as a 12V power source. The volt-
age indicating LED lights will indicate internal low battery voltage by flashing. The more
discharged the internal battery becomes, the faster the light will flash. Press the internal
battery voltage button to see the exact internal battery status.
The 12V auxiliary outlet is protected by a 15 amp circuit breaker, which resets automatically.
Digital Battery Meter
LED Indicator Lights
12V Auxiliary Power Outlet
Troubleshooting
Problem: Rescue 3100 turns off under load.
• The internal battery may be low.
• Check the internal battery voltage and recharge as needed.
• Extremely high current draw is present. This may be because there is a short circuit
in the system to be jump started.
• Check the system for short circuits.
• The load required may exceed the capacity of the Rescue 3100. Very large batteries or
battery banks may require recharging, not jump start assistance.
Problem: Green power light fails to light when the start button is pressed.
Unit is sounding a tone.
• Check the reverse polarity light. If it is illuminated, reverse the clamp connections.
• The internal battery voltage is below 8.5V. Check the internal battery voltage, and
recharge the unit.
Problem: The low voltage light is lit and the unit will not engage.
• This can happen if the battery on the unit to be started is severely discharged.
1. Verify that the clamps are connected correctly, positive to positive and
negative to ground.
2. Press and hold the Start button for 4 seconds.
3. Verify the green Power light is on. The unit is now connected.
Polarity protection is not
available in this mode.
