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How to charge a traffic signal battery with the Endurance Charger

This article outlines how to charge your Evo ACM and Evo1 batteries with the Endurance Charger system.

This procedure applies to compatible 12 V lead-acid traffic and AGM signal batteries between 50 Ah and 150 Ah. You can follow the steps below for on-board and off-board charging of signal batteries.

Before you begin

  1. Make sure the charging area is clear and well ventilated.
  2. Wear the required PPE.
  3. Inspect the battery, Anderson connectors and charging cable. Do not use damaged or corroded equipment.
  4. Allow the batteries to reach a suitable temperature if they have just come from cold/hot environments.
  5. Make sure the charger is switched off.

Start charging

  1. Connect the charger's Anderson connector to the battery connector, either directly to the battery itself or via the signals onboard charging port.
  2. Switch on the AC power supply or charger panel.
  3. Check that the Test LED illuminates or flashes.
  4. Confirm that Normal mode is selected. Do not select High or Li-ion mode for traffic signal batteries.
  5. Allow the charger to complete its automatic test and begin charging.

The Test LED will continue to flash until a charging pulse raises the battery voltage above 12.5 V or two minutes have elapsed.

Check charging progress

  • Bulk illuminated: the charger is supplying its maximum charging current. The battery is normally below approximately 80% charge.
  • Abs illuminated: the charger has entered the absorption stage. The battery is approximately 80% charged and may be returned to service if necessary.
  • Float illuminated: the battery is fully charged and ready for use.
  • Storage illuminated: charging is complete, and the charger is maintaining the battery for longer-term storage.

For the best battery life, allow the battery to complete some or all of the Absorption stage on every cycle. The guide recommends completing a full Absorption stage at least once every five charging cycles.

Stop charging and disconnect

  1. Switch off the AC power supply or charger panel.
  2. Disconnect the Anderson connectors between the battery and charger.
  3. Return the charging lead to its cable-parking point.

Never disconnect the battery while the charger remains powered.