2.1 Key Features

The Kings 25A DC-DC Charger offers advanced multi-stage charging, ensuring optimal battery health and performance. It supports both lead-acid and lithium-ion batteries, with customizable charging profiles. The charger features an integrated MPPT solar regulator, maximizing solar energy utilization. Its robust design includes an IP66 rating for durability in harsh environments. With a 25A charging capacity, it efficiently handles auxiliary battery charging from 12-24V vehicles. The charger also includes safety features like overcharge protection and automatic shutdown, ensuring safe and reliable operation. These features make it ideal for camping, RVs, and off-grid applications, providing a versatile and efficient charging solution.

2.2 Benefits of the Charger

The Kings 25A DC-DC Charger offers exceptional efficiency, versatility, and reliability for charging 12V auxiliary batteries. Its multi-stage charging ensures optimal battery health, while MPPT solar compatibility maximizes energy harvesting. The charger supports both lead-acid and lithium-ion batteries, catering to diverse needs. Its IP66 rating ensures durability in harsh environments, making it ideal for outdoor and off-grid applications. Safe operation is guaranteed with overcharge protection and automatic shutdown features. This charger is a cost-effective, high-performance solution for campers, RV owners, and adventurers, providing consistent power delivery and extending battery lifespan. Its user-friendly design and robust construction make it a reliable choice for various charging requirements.

Technical Specifications

The Kings 25A DC-DC Charger features a max charging current of 25A, with a solar input voltage range of 9-25V and vehicle input of 11.9-25V, ensuring compatibility with 12V systems.

3.1 Electrical Specifications

The Kings 25A DC-DC Charger is designed for 12V systems, with a maximum charging current of 25A. It supports a solar input voltage range of 9-25V and a vehicle input range of 11.9-25V. The minimum solar input start-up voltage is 14.5V, while the vehicle input starts at 12.2V. The charger is compatible with 12V nominal solar panels (Voc < 25V) and ideal for systems requiring efficient power conversion. Its electrical design ensures stable and reliable charging for auxiliary batteries, making it suitable for various applications, including camping, marine, and off-grid setups. The specifications ensure optimal performance across different power sources.

3.2 Compatibility Overview

The Kings 25A DC-DC Charger is compatible with 12V and 24V vehicle systems, supporting a wide range of applications. It works seamlessly with lead-acid, AGM, and lithium-ion batteries, ensuring flexibility for different setups. The charger is also compatible with 12V nominal solar panels (Voc < 25V) and features MPPT technology for efficient solar energy utilization. Its design supports various vehicle types, including marine and RV applications, making it a versatile choice for off-grid and mobile power systems. This compatibility ensures reliable performance across different power sources and battery types, catering to diverse user needs and setups.

Installation Guide

Installation involves disconnecting the vehicle’s battery, connecting the charger to the vehicle’s electrical system, and linking it to the auxiliary battery. Ensure all connections are secure before use.

4;1 Pre-Installation Checks

Before installing the Kings 25A DC-DC Charger, ensure the vehicle’s battery is disconnected to prevent electrical hazards. Verify the auxiliary battery type (lead-acid, AGM, or lithium-ion) and its compatibility with the charger. Check the vehicle’s voltage range (12-24V) to ensure it matches the charger’s input requirements. Inspect all cables and connections for damage or wear. Ensure the charger’s rated current (25A) does not exceed the vehicle’s electrical system capacity. Review the manual to confirm wiring diagrams and installation steps. If unsure, consult a qualified technician to avoid potential risks. Proper preparation ensures a safe and efficient installation process.

4.2 Step-by-Step Installation Instructions

Mount the charger in a well-ventilated area, away from water and heat sources. Connect the red cable to the auxiliary battery’s positive terminal and the black cable to the negative terminal. Attach the yellow ignition wire to the vehicle’s ignition circuit. Secure all connections firmly. If using solar, connect the green cable to the solar panel’s positive terminal and ensure the panel is properly configured. Turn on the ignition to test the charger. Verify the display or indicators show proper charging. Tighten all connections and double-check wiring before final use. Always follow the manual for specific configurations.

Charging Modes

The Kings 25A DC-DC charger operates in three modes: Bulk, Float, and MPPT. These modes ensure efficient charging, battery maintenance, and optimal solar energy utilization for extended battery life.

5.1 Bulk Charging Mode

The Bulk Charging Mode is the first stage of the Kings 25A DC-DC charger’s operation, designed to rapidly charge deeply discharged batteries. During this phase, the charger delivers its maximum current rating of 25A to quickly restore the battery’s state of charge. This mode is ideal for replenishing batteries that have been drained to a low voltage, ensuring efficient and fast energy replenishment. The charger automatically transitions to Float Mode once the battery reaches a predetermined voltage, preventing overcharging and maintaining battery health. This intelligent multi-stage charging system ensures optimal performance and longevity for your auxiliary battery.

5.2 Float Charging Mode

The Float Charging Mode is the second stage of the Kings 25A DC-DC charger’s operation, designed to maintain the battery at its full charge without overcharging. Once the battery reaches its maximum voltage, the charger automatically reduces the charging current to a lower, safer level. This mode ensures the battery remains fully charged while preventing degradation from overcharging. It is ideal for long-term maintenance and is activated after the Bulk Charging Mode has completed. The float mode is essential for preserving battery health and extending its lifespan, making it suitable for applications where the battery is regularly used and recharged.

5.3 MPPT Mode for Solar

The Kings 25A DC-DC Charger features an MPPT (Maximum Power Point Tracking) mode, designed to optimize solar charging efficiency. This advanced algorithm continuously adjusts the charging current to maximize energy transfer from the solar panel to the battery, even under varying sunlight conditions. The charger supports a solar input voltage range of 9-25V, with a minimum start-up voltage of 14.5V. When connected to a compatible 12V solar panel (Voc < 25V), the MPPT mode ensures efficient energy harvesting, making it ideal for off-grid applications. The Green cable is used for solar input, connecting directly to the panel’s positive terminal for seamless integration. This mode maximizes solar charging performance and prolongs battery life.

Solar Panel Compatibility

The Kings 25A DC-DC Charger is compatible with 12V solar panels, supporting a voltage range of 9-25V. It features MPPT for efficient solar energy utilization, ensuring optimal charging performance.

6.1 Solar Panel Requirements

The Kings 25A DC-DC Charger is compatible with 12V solar panels, requiring a nominal voltage of 12V and an open-circuit voltage (Voc) of less than 25V. For optimal performance, solar panels should be rated between 9V and 25V to ensure safe and efficient charging. The charger features an MPPT (Maximum Power Point Tracking) algorithm, which maximizes energy transfer from the solar panel to the battery, even under varying sunlight conditions. The recommended solar panel size is 360W for the 25A model, ensuring efficient charging of auxiliary batteries in off-grid applications.

6.2 Connecting Solar Panels

To connect solar panels to the Kings 25A DC-DC Charger, ensure the solar panel is compatible with the charger’s specifications. The solar input voltage range is 9-25V, with a minimum start-up voltage of 14.5V. Connect the positive terminal of the solar panel to the Green cable (solar input) on the charger, and the negative terminal to the charger’s ground. The charger features an MPPT algorithm, which optimizes energy transfer from the solar panel to the battery, even in varying sunlight conditions. Properly securing the connections ensures safe and efficient charging of your auxiliary battery.

Battery Type Compatibility

The Kings 25A DC-DC Charger supports both lead-acid and lithium-ion batteries, ensuring compatibility with various auxiliary battery systems for optimal charging performance and versatility in applications.

7.1 Lead-Acid Batteries

The Kings 25A DC-DC Charger is compatible with lead-acid batteries, including AGM (Absorbent Glass Mat) and flooded types. AGM batteries are ideal for their low maintenance and vibration resistance, while flooded lead-acid batteries offer a balance of performance and cost. The charger’s intelligent algorithms optimize charging for both types, ensuring efficient and safe charging processes. This compatibility makes the charger versatile for various applications, from vehicles to off-grid systems, while extending battery lifespan and performance. The charger’s design ensures proper care for lead-acid batteries, preventing overcharging and maintaining health.

7.2 Lithium-Ion Batteries

The Kings 25A DC-DC Charger supports lithium-ion batteries, offering tailored charging profiles for optimal performance and longevity. Its intelligent charging algorithms ensure safe and efficient charging, preventing overcharging and maintaining battery health. Lithium-ion batteries benefit from the charger’s advanced features, including fast charging capabilities and high energy density. The charger is compatible with modern lithium-ion chemistries like LiFePO4, making it ideal for vehicles and applications where lightweight, high-performance batteries are preferred. This compatibility enhances versatility, allowing users to choose the best battery technology for their needs without compromising on charging efficiency or safety.

Safety Precautions

Always follow safety guidelines to avoid hazards. Ensure proper installation, avoid incorrect connections, and keep the charger away from water. Read the manual thoroughly before use.

8.1 General Safety Guidelines

Always read and understand this manual before using the Kings 25A DC-DC Charger. Ensure proper installation and operation to avoid electrical hazards. Disconnect the battery before installation and verify all connections are secure. Wear protective gear like gloves and safety glasses when handling electrical components. Keep the charger away from water and flammable materials. Avoid exposing the device to extreme temperatures or vibrations. Follow the recommended battery types and charging parameters. Never overload the charger or modify its components. Adhere to these guidelines to ensure safe and efficient operation.

8.2 Electrical Safety Tips

Ensure correct polarity when connecting terminals to avoid short circuits. Never overload the charger or connect it to unsuitable battery types. Keep the charger away from water and moisture. Use appropriately rated cables and connectors to prevent overheating. Always disconnect the battery before servicing or adjusting connections. Avoid reversing the solar panel or battery connections, as this can cause damage. Use a fuse or circuit breaker rated for the charger’s maximum current. Regularly inspect cables and connectors for damage or wear. Ensure the charger is mounted on a firm, heat-dissipating surface. Follow these tips to ensure safe and reliable operation.

Troubleshooting Common Issues

This section helps identify and resolve common problems with the Kings 25A DC-DC charger, ensuring optimal performance and addressing issues like charging errors or connectivity problems effectively.

9.1 Diagnosing Charging Problems

Diagnosing charging issues with the Kings 25A DC-DC charger involves checking connections, fuses, and error indicators. Ensure all terminals are secure and free from corrosion. Verify the fuse integrity and replace it if blown. Check the charger’s status LED for error codes, which indicate specific faults. Review the manual for LED color meanings, such as red for high temperature or blue for normal operation. If issues persist, consult the troubleshooting section or contact customer support. Proper diagnosis ensures efficient resolution and maintains the charger’s performance and reliability.

9.2 Resolving Common Errors

To resolve common errors with the Kings 25A DC-DC charger, start by identifying the issue. If the charger fails to turn on, check the input voltage and ensure it falls within the 12-24V range. For slow charging, verify the solar panel connection and ensure the MPPT mode is active. If error codes appear, consult the manual for LED color meanings. Reset the charger by disconnecting and reconnecting the power source. If problems persist, refer to the troubleshooting guide or contact Kings customer support for assistance. Proper resolution ensures optimal performance and longevity of the charger.