Kings 40A DC-DC Charger Manual PDF Download Australia: Article Plan
This article details accessing the Kings 40A DC-DC charger manual in PDF format, specifically for Australian users. It covers features, safety, installation, and warranty information.
The Kings 40A DC-DC charger is a robust and versatile power solution designed for 12V and 24V systems, popular amongst Australian 4WD enthusiasts and campers. This multi-stage charger efficiently converts higher voltage DC input (from your vehicle’s alternator) into a stable, regulated output suitable for charging auxiliary batteries.
Notably, it incorporates an MPPT (Maximum Power Point Tracking) solar regulator, maximizing solar panel efficiency. Compatibility with both Lithium (LiFePO4) and AGM batteries, selectable via a push button, adds to its flexibility. Its IP66 rating ensures dust and water resistance, crucial for off-road adventures. The charger boasts a 40-amp output, providing rapid battery charging capabilities. Understanding its features and proper installation, guided by the official manual, is key to optimal performance and longevity.
What is a DC-DC Charger and Why Use One?
A DC-DC charger, or DC to DC converter, regulates voltage from a higher DC source – typically a vehicle’s alternator – to a lower, stable DC voltage suitable for charging auxiliary batteries. Unlike directly connecting a battery to the alternator, which can cause overcharging and damage, a DC-DC charger provides a controlled and optimized charging process.
Why use one? They protect your auxiliary battery, ensuring longer lifespan and reliable power for accessories like fridges, lights, and camping equipment. The Kings 40A model’s MPPT functionality further enhances efficiency, especially when paired with solar panels. This is vital for extended off-grid use common in Australian outback travel, providing consistent power regardless of driving conditions.
Key Features of the Kings 40A DC-DC Charger
The Kings 40A DC-DC charger boasts several standout features; It’s a 40 Amp multi-stage battery charger, designed for efficient and safe charging. A key highlight is the built-in MPPT solar regulator, prioritizing solar input when available, maximizing energy harvest. It’s also notably Lithium (LiFePO4) compatible, alongside AGM batteries, selectable via a simple push-button control.
Durability is addressed with an IP66 rating, protecting against dust and water ingress – crucial for Australian conditions. Quick connect plugs simplify installation, and the unit handles both 12V and 24V input systems. These features combine to offer a versatile and robust charging solution for various applications, from camping to work vehicles.
Technical Specifications: Kings 40A Charger
The Kings 40A DC-DC charger operates within a 12/24V input range, accommodating diverse vehicle electrical systems. Its maximum output current is 40 Amps, delivering rapid charging capabilities; The output voltage is intelligently regulated to suit the connected battery type – either AGM or Lithium. The integrated MPPT solar regulator features advanced tracking algorithms, optimizing solar panel efficiency.
This charger utilizes a multi-stage charging process, ensuring optimal battery health and longevity. It’s designed for robust performance, with built-in protections against over-voltage, under-voltage, and short circuits. Detailed specifications, including efficiency ratings and temperature operating ranges, are available within the official product manual.
Voltage Input Range
The Kings 40A DC-DC charger boasts a versatile voltage input range of 12V to 24V DC; This broad compatibility ensures it can be effectively utilized in a wide array of vehicles, including cars, trucks, and boats with differing electrical systems. The charger automatically detects the input voltage, adapting its operation accordingly for optimal performance.
This flexibility eliminates the need for separate chargers for 12V and 24V setups, simplifying your power management solution. It’s crucial to verify your vehicle’s voltage before installation to ensure compatibility. Operating outside the specified input range may damage the charger or connected devices; consult the manual for detailed guidance.
Output Current & Voltage
The Kings 40A DC-DC charger delivers a maximum output current of 40 Amps, making it suitable for charging substantial battery banks efficiently. It provides a regulated output voltage of 13.8V, specifically designed for optimal charging of lead-acid (AGM, Gel) and lithium (LiFePO4) batteries.
The charger features multi-stage charging, adapting the voltage and current during the charging process to maximize battery life and performance. Users can select the appropriate battery type via a push-button control, ensuring correct charging parameters. Consistent voltage output is maintained even with fluctuating input voltages, protecting sensitive electronics.
MPPT Solar Regulator Details
The Kings 40A DC-DC charger incorporates a built-in Maximum Power Point Tracking (MPPT) solar regulator. This advanced technology maximizes energy harvest from solar panels, increasing charging efficiency, especially in suboptimal conditions. The MPPT function continuously adjusts the operating point of the solar panel to extract the most power available.
Solar priority charging ensures that when both a vehicle’s alternator and solar input are present, the solar energy is utilized first, reducing the load on the alternator. This feature extends alternator life and minimizes fuel consumption. The regulator supports a wide range of solar panel voltages, offering flexibility in system design.
Safety Precautions & Warnings

Prior to installing and operating the Kings 40A DC-DC charger, carefully review all safety precautions detailed in the user manual. Incorrect installation or operation can lead to damage, injury, or fire. Always disconnect the battery before making any electrical connections. Ensure adequate ventilation around the charger during operation to prevent overheating.
Never expose the charger to water or excessive moisture; it has an IP66 rating but prolonged exposure should be avoided. Avoid short-circuiting the output terminals. The manual explicitly states that the warnings, cautions, and instructions cannot be disregarded. Lithium battery compatibility requires specific settings – incorrect settings can be dangerous.
Installation Guide: Step-by-Step
Installation requires careful attention to detail. First, select a suitable mounting location, ensuring adequate ventilation and protection from the elements. Refer to the manual for recommended mounting considerations. Next, connect the positive and negative input wires from the vehicle’s battery, observing correct polarity. Then, connect the output wires to the auxiliary battery, again ensuring correct polarity.
Wiring diagrams for common setups are included in the downloadable PDF manual. Utilize these diagrams to ensure correct connections. Finally, verify all connections are secure before powering on the charger. The manual stresses the importance of reading instructions before installation.
Wiring Diagrams for Common Setups

The Kings 40A DC-DC charger manual PDF contains several wiring diagrams designed for typical installation scenarios. These include configurations for a single auxiliary battery, dual battery systems, and setups incorporating solar panels. Diagrams clearly illustrate the connection points for positive and negative input/output wires, as well as recommended fuse placement for circuit protection.

Users will find diagrams tailored to both 12V and 24V systems. It’s crucial to follow these diagrams precisely to avoid damage to the charger or connected batteries. The manual emphasizes verifying polarity before making any connections. These visual guides simplify the installation process, even for those with limited electrical experience.
Mounting Considerations
The Kings 40A DC-DC charger manual PDF stresses the importance of secure mounting to ensure optimal performance and longevity. The charger should be installed in a dry, well-ventilated location, protected from direct moisture and extreme temperatures. Mounting surfaces must be capable of supporting the charger’s weight, and vibration should be minimized.
The manual recommends using appropriately sized mounting hardware and suggests avoiding locations near heat sources or flammable materials. Adequate clearance around the unit is necessary for airflow and access for maintenance. It’s vital to ensure wiring is routed safely, preventing chafing or damage. Proper mounting contributes to the charger’s IP66 rating, safeguarding against dust and water ingress.
Battery Type Selection (Lithium vs. AGM)
The Kings 40A DC-DC charger manual highlights its compatibility with both Lithium (LiFePO4) and AGM batteries, a key feature for diverse setups. However, correct selection is crucial for optimal charging and battery health. The charger incorporates a push-button selection feature, allowing users to easily switch between charging profiles.
Lithium batteries require a specific charging voltage profile to prevent damage and maximize lifespan, while AGM batteries have different requirements. Incorrect settings can lead to reduced battery capacity or even failure. The manual provides detailed guidance on identifying your battery type and selecting the appropriate charging profile. Always verify the selected profile before connecting the charger.
Understanding the LED Indicator Lights
The Kings 40A DC-DC charger utilizes LED indicator lights to communicate its operational status and potential faults. The manual dedicates a section to deciphering these light sequences, crucial for troubleshooting. Normal operation is indicated by specific light patterns, confirming charging is proceeding as expected.
However, flashing or solid red lights signal fault conditions, requiring immediate attention. The manual provides a comprehensive list of fault indicator codes, detailing the corresponding issue – such as overvoltage, undervoltage, or overload. Understanding these codes allows users to diagnose problems quickly and take corrective action, preventing potential damage to the battery or charger.
Normal Operation Indicators
During standard charging, the Kings 40A DC-DC charger’s LED indicators display specific patterns confirming correct functionality. Typically, a solid green light signifies the charger is operating within normal voltage and current parameters, actively charging the battery. A pulsing green light often indicates the unit is in a float or maintenance charging stage, maintaining the battery’s full charge without overcharging.
When solar input is detected and prioritized, a separate LED may illuminate, confirming the MPPT solar regulator is functioning correctly. These indicators provide visual reassurance that the charger is effectively managing power delivery to the battery, ensuring optimal charging performance and extending battery lifespan. Consistent observation of these lights is recommended.
Fault Indicator Codes & Troubleshooting
The Kings 40A DC-DC charger utilizes LED indicator patterns to signal potential faults requiring attention. A flashing red light commonly indicates a low voltage input, suggesting insufficient power from the vehicle’s alternator or solar panels. A solid red light may signify an over-voltage situation, potentially damaging to the battery. Intermittent flashing could point to a short circuit or overload.
Troubleshooting involves verifying input voltage, checking wiring connections for integrity, and ensuring the battery isn’t excessively discharged. If issues persist, consult the full manual for detailed error code explanations and recommended solutions. Disconnecting and reconnecting the charger can sometimes reset minor faults, but persistent errors require professional assessment.
Troubleshooting Common Issues
Common problems with the Kings 40A DC-DC charger often relate to incorrect wiring or insufficient power input. If the charger isn’t initiating, double-check the positive and negative connections to both the vehicle and the battery, ensuring they are secure and corrosion-free. A discharged battery can prevent charging; verify the battery’s state of charge before troubleshooting the charger itself.
If the charger enters fault mode, refer to the LED indicator codes (detailed in the manual) to diagnose the issue. Overheating can occur in poorly ventilated areas; ensure adequate airflow around the unit. Compatibility issues with certain battery types may also arise, necessitating correct battery selection via the charger’s settings.
Kings 40A Charger and Australian Consumer Law

Australian Consumer Law (ACL) provides statutory guarantees regarding the Kings 40A DC-DC charger. These guarantees include acceptable quality and fitness for purpose, meaning the charger must function reliably and be suitable for its intended use – charging vehicle batteries. Consumers are entitled to a repair, replacement, or refund if the charger fails to meet these standards.
These rights cannot be excluded by the retailer or manufacturer. If the charger is faulty due to a manufacturing defect, a consumer is eligible for a remedy. Keep proof of purchase (receipt) as evidence. The ACL also covers issues arising from implied warranties, ensuring the product performs as expected within a reasonable timeframe.
Where to Download the Kings 40A DC-DC Charger Manual (PDF)
Finding the Kings 40A DC-DC charger manual in PDF format is crucial for safe and effective operation. While a direct link isn’t consistently provided, several avenues exist. Often, retailers like 4WD Supacentre, where Kings products are sold, may host the manual on their website. Searching “[Kings 40A DCDC Charger manual PDF]” on Google will yield results, potentially including direct download links or forum discussions.
Check the Kings website directly, navigating to their support or downloads section. Alternatively, the manual may be accessible through online marketplaces where the charger is sold. Ensure the downloaded file is legitimate and free from malware before opening it. A user manual version 1.0 is available online.
Alternative Resources & Support

Beyond the official manual, several resources offer support for the Kings 40A DC-DC charger. Online 4WD forums and Facebook groups dedicated to Kings products or DC-DC charging are excellent places to ask questions and share experiences. 4WD Supacentre provides customer support via their website and potentially through phone or email, offering assistance with installation and troubleshooting.
YouTube channels specializing in 12V systems and vehicle electricals often feature videos demonstrating the installation and use of this charger. Reviewing these videos can provide visual guidance. Remember to verify information from unofficial sources against the official manual. Checking Antony Brown’s 4WD Supacentre Reviews can also be helpful.
Compatibility with Solar Panels

The Kings 40A DC-DC charger boasts a built-in MPPT (Maximum Power Point Tracking) solar regulator, enhancing its compatibility with various solar panels. This feature optimizes energy harvest from the panels, maximizing charging efficiency for your batteries. The charger supports solar priority charging, meaning it will utilize solar power whenever available before switching to the vehicle’s alternator.
While specific panel voltage and wattage limits are detailed in the manual, generally, the charger accommodates a wide range of common solar panel configurations. Ensure your solar panel’s voltage falls within the charger’s input range to prevent damage. Proper wiring and fusing are crucial for safe and effective solar integration.

Warranty Information for Australian Customers
Kings offers a warranty on the 40A DC-DC charger for Australian customers, protecting against manufacturing defects and component failures. Our goods come with guarantees that cannot be excluded under the Australian Consumer Law, entitling you to a replacement or refund for major failures. The standard warranty period is typically specified in the product manual and upon proof of purchase.

Warranty claims require submitting evidence of purchase and a detailed description of the fault; Modifications or misuse of the charger may void the warranty. Contact Kings’ Australian support team for assistance with warranty claims and to understand the full terms and conditions. Retain your purchase receipt for warranty service.
Frequently Asked Questions (FAQ)
Here are some frequently asked questions regarding the Kings 40A DC-DC charger. Can the Kings 40A charger be used with all battery types? Yes, it features push-button selection for both Lithium (LiFePO4) and AGM batteries, offering versatility. What is the IP66 rating and what does it mean? IP66 signifies dust-tight protection and resistance to powerful water jets, ensuring durability in harsh environments.
What do the LED indicator light sequences mean? Refer to the manual for detailed explanations of normal operation and fault indicator codes. Is this charger compatible with solar panels? Yes, it includes a built-in MPPT solar regulator for efficient solar charging.
Can the Kings 40A charger be used with all battery types?
The Kings 40A DC-DC charger demonstrates excellent compatibility, but isn’t universally suitable without proper configuration. Specifically, this charger is designed for use with both Lithium (LiFePO4) and Absorbed Glass Mat (AGM) battery types. A key feature is the integrated push-button battery type selection, allowing users to easily switch between these two chemistries.

It’s crucial to select the correct battery type within the charger’s settings to ensure optimal charging profiles and prevent damage. While these are the primary supported types, using other battery chemistries is not recommended and may void the warranty. Always consult the full user manual for detailed guidance.
What is the IP66 rating and what does it mean?
The Kings 40A DC-DC charger boasts an IP66 rating, a crucial specification for durability in demanding environments. IP stands for “Ingress Protection,” and the numbers indicate the level of protection against solid objects and liquids. Specifically, ‘6’ in the first digit signifies complete protection against dust – meaning no ingress of solid particles.
The second digit, also ‘6’, denotes protection against powerful water jets. This means the charger can withstand high-pressure, limited duration water sprays from any direction without harmful effects. While it’s splash-proof and jet-proof, it isn’t designed for submersion. This rating makes it suitable for 4WD, camping, and marine applications.