Qoltec DC-DC Automatic Battery Charger with MPPT Controller

Introduction

Thank you for choosing our battery charger. We are confident that this product will meet your expectations and become an indispensable tool in your daily work. This user manual has been prepared to facilitate the installation and use of the device. It includes detailed steps and instructions for the correct use of our product. If you have any questions after reading the manual, please contact the service department of NTEC sp. z o.o.

About the Product

This is a DC-DC charger with an isolated circuit, featuring automatic voltage regulation and MPPT technology. It includes a button to select up to 5 different battery types. The charger has a dual input: one for solar charging (default priority) and another for charging from a car generator. It is equipped with a delayed ACC start function, meaning it begins charging 10 seconds after receiving the engine start signal.

Product Features

• MPPT Function: Optimizes solar charging, increasing efficiency. ✔️
• Isolated Electrical Circuit: Separated from other circuits or power sources, providing enhanced safety and operational stability.
• Battery Type Change Button: Supports up to 5 different battery types.
• Dual Input: One for solar charging (priority), the other for charging from a car generator.
• Delayed ACC Start: The charger starts 10 seconds after receiving the engine start signal.
• Overheating and Short-Circuit Protection: Ensures safe charger operation.
• Automatic Charge Start: The charger begins charging automatically when the battery is connected.
• Automatic Disconnection: When the battery is fully charged (voltage reaches maximum for the type and current drops to 1/10 of the charger's maximum), the charger automatically disconnects and resumes operation every 90 seconds.
• LED Indicators: Provide information on battery and power status.
• Correct Terminal Connection: The charger requires at least 9 volts at the output terminals (battery) and a correct input voltage connection to function properly.
• On/Off Button: The product features a power on/off button.
• Battery Type Mode: Quickly change battery type using the MODE button.

Input Voltage Range

1. For Car Generator: 12.0V - 15.8V ± 0.2V. When the input voltage is between 12V and 13V, the charger requires the generator trigger signal (10-16V) to operate correctly. (Refer to Figure 1 in Appendix).
2. For Solar Power: 12.0V - 30.0V ± 0.2V. The charger operates normally within this range. When the voltage drops to 11V, it shuts off automatically. Note: Exceeding a solar voltage of 40V can damage the charger. (Refer to Illustration 2 in Appendix).

Safety Instructions

• Do not use the charger in humid, hot, or flammable areas.
• Do not open the casing while the charger is operating.
• Avoid touching exposed parts during charging to prevent electric shock.
• Use original power cables to avoid damage from defective or unsuitable cables.
• Do not exceed the maximum voltage or current values for the inputs and outputs.
• When connecting or disconnecting cables, ensure the charger is turned off and has cooled down.
• Periodically check that the charger's cables and connections are not damaged or loose.
• If the charger overheats, emits smoke, or smells, turn it off immediately and discontinue use.

Anderson Connector

The charger uses Anderson connectors for power input and output.

• Connect the red cable to the battery's positive terminal and the black cable to the negative terminal.
• Connect the yellow cable to the car generator's positive pole and the black cable to the negative pole.
• Connect the green cable to the solar panel's positive pole and the black cable to the negative pole.
• Connect the blue cable to the car generator's 10-16 volt trigger line (ACC line).

Note: The black cable is the common negative cable.

Unit Operation

1. Preparation for Use:

   A. Ensure the charger is turned off before installing and connecting it.

   B. Install the charger in a well-ventilated, dry location, away from heat sources.

2. Power Source Connection:

   A. Connect the solar charging cable (green and black) to the solar panel.

   B. Connect the generator charging cable (yellow and black) and the activation cable (blue) to the car generator.

   C. Ensure the input voltage and polarity are correct to prevent damage to the charger.

3. Output Device Connection:

   A. Connect the output cables (red and black) to the battery you wish to charge.

   B. Before connecting, ensure the voltage and current required by the battery are within the charger's output range.

   C. Verify that all connections are secure to prevent short circuits or interruptions.

4. Charger Power On:

   A. Connect the battery to the charger; it will begin charging automatically.

   B. Select the appropriate charging mode for the battery type.

   C. Monitor the indicators to confirm the charger is functioning correctly.

   D. When the battery is charged, the charger will stop charging automatically.

5. Monitoring and Adjustment:

   A. Depending on the battery type, the output voltage can be adjusted using the MODE button.

   B. Regularly monitor the charger's temperature and output status to ensure safe operation.

   C. The charger responds quickly to short circuits to maintain safe operation.

LEDs

1. When a battery is connected (without input connected), the corresponding battery LED blinks.
2. When there is no battery at the output but the input power is connected, both the battery LED and the input LED blink simultaneously.
3. When both the input and output are powered, the battery LED illuminates steadily, and the input LED also remains on.

Battery Maintenance

1. Regularly check the battery's charge level to ensure it is in good condition.
2. Follow the battery manufacturer's charging and maintenance recommendations.
3. Avoid overcharging or over-discharging the battery for extended periods.
4. Store batteries in a dry, cool place away from heat sources.

Technical Specifications

Other Parameters

Protection

• Short-Circuit Protection:

  The fault indicator light remains on during a short circuit. In case of a prolonged short circuit, the charger restarts every 90 seconds. It resumes operation 90 seconds after the short circuit is removed.

• Overheating Protection:

  When the internal temperature exceeds 70°C, the fault light starts blinking. The charger will automatically adjust the output to maintain a constant temperature of 70°C, both internally and externally.

• Reverse Polarity Protection:

  If the polarity of the input and output terminals is reversed, the charger will not function. It will resume normal operation once the polarity is corrected.

Troubleshooting

Environmental and Recycling Information

1. Take the product to a recycling company.
2. Avoid discarding the charger to prevent environmental pollution.
3. The charger casing is made from environmentally friendly and recyclable materials.

Warranty and Service

The charger is covered by the manufacturer's warranty. If you have any problems with the product, please contact the service center for assistance.