1. Introduction
This manual provides essential information for the safe and efficient use of your Victron Energy Skylla-TG 24-Volt 30 amp Battery Charger. The Skylla-TG charger is designed to provide precise and adjustable charging for various battery types, including sealed and unsealed battery systems. It features two isolated outputs, making it versatile for different power setups.
Please read this manual thoroughly before installation and operation to ensure proper functionality and safety.
Figure 1: Victron Energy Skylla-TG 24-Volt 30 amp Battery Charger
This image shows the front view of the Victron Energy Skylla-TG battery charger, highlighting its blue casing and control panel with indicator lights for output voltage and current, and a switch for charge modes.
2. Safety Information
WARNING: Incorrect installation can be hazardous. Always consult a licensed professional and follow all applicable electrical codes during installation.
- Ensure the charger is installed in a well-ventilated area, away from flammable materials.
- Do not expose the charger to water or excessive moisture.
- Before performing any maintenance or connections, disconnect the charger from all power sources.
- Use appropriate personal protective equipment (PPE) during installation and maintenance.
- Verify that the input voltage matches the charger's specifications before connecting.
3. Product Overview and Features
The Victron Energy Skylla-TG charger is engineered for reliability and performance, offering advanced features for optimal battery charging and system integration.
Key Features:
- Dual Isolated Outputs: Features two isolated outputs. The primary output delivers the full rated current, while the second output, limited to approximately 4 amp with a slightly lower output voltage, is specifically designed to top up a starter battery.
- Versatile Power Supply: Suitable for both AC and DC supply (AC-DC and DC-DC operation). The charger can also function as a stable power supply if batteries or large buffer capacitors are not available.
- Voltage Sense Facility: Equipped with a voltage sense facility to compensate for voltage loss due to cable resistance, ensuring the battery always receives the correct charge voltage.
- Controlled Charging: A microprocessor accurately controls the charging process in three steps, following the IUoUo characteristic for efficient and rapid charging.
- Robust Protection: High temperature protected, operating reliably between -40 to +50°C (-40 - 122°F). Maximum humidity tolerance is 95%.
- Compact Design: Designed with a compact footprint for easy integration into various systems.
- Remote Monitoring Capability: Compatible with Victron Remote Monitoring (VRM) for remote management and optimization of your power system.
Figure 2: Skylla-TG 24-Volt 30 amp with 1+1 Isolated Outputs
This image highlights the key features of the Skylla-TG charger, emphasizing its 1+1 isolated outputs and suitability for various battery systems. It shows the charger in a clean, illustrative setting.
Figure 3: Compact Size and Dimensions
This image illustrates the compact dimensions of the Skylla-TG charger, showing its height, width, and depth in both millimeters and inches, alongside a visual comparison to a typical installation environment.
Figure 4: Protection and Charging Characteristics
This image details the high-temperature protection and humidity ratings of the Skylla-TG charger, along with explanations of its controlled charging process and battery voltage sense feature.
Figure 5: Victron Remote Monitoring
This image illustrates the Victron Remote Monitoring (VRM) system, showing how users can monitor, manage, and optimize their Victron Energy systems remotely via a web interface or mobile app.
4. Installation
Proper installation is crucial for the safety and performance of your Skylla-TG charger. It is highly recommended that installation be performed by a licensed professional in accordance with all local and national electrical codes.
Mounting:
- Mount the charger in a dry, cool, and well-ventilated area.
- Ensure adequate clearance around the unit for proper airflow and heat dissipation.
- Use appropriate fasteners to secure the charger to a stable surface.
Electrical Connections:
The Skylla-TG charger features two isolated outputs, allowing for flexible battery bank configurations.
- Main Output: Connect the main output to your primary battery bank.
- Secondary Output: The second output (approx. 4A) is ideal for charging a starter battery or a smaller auxiliary battery.
- Voltage Sense: Connect the voltage sense wires directly to the battery terminals to ensure accurate voltage readings and optimal charging.
- AC/DC Input: Connect the appropriate AC or DC power source to the charger's input terminals. Ensure correct polarity for DC connections.
Figure 6: Two Outputs to Charge Two Battery Banks
This image provides a simplified wiring diagram demonstrating how to connect the Victron Energy TG charger to two separate battery banks, including the main output and the secondary output for a starter battery, along with voltage sense connections.
5. Operation
Charging Process:
The Skylla-TG battery charger employs a sophisticated 3-stage charging characteristic (IUoUo) to ensure optimal battery health and longevity:
- Bulk (I): Charges the battery at maximum current until the voltage reaches a preset level.
- Absorption (Uo): Maintains a constant voltage while the current gradually decreases, fully charging the battery.
- Float (Uo): Reduces the voltage to a lower level to maintain the battery at full charge without overcharging.
Recommended Battery Capacity:
The charger is suitable for various battery types (12V, 24V, 48V lead-acid batteries). The recommended battery capacity depends on the charger model:
Figure 7: Battery Health and Smart Charging
This image provides details on the Skylla-TG charger's factory-set charge voltages and its 3-stage IUoUo charging characteristic. It also includes a table of recommended battery capacities for different charger types.
| Charger Type | Recommended Capacity (Ah) |
|---|---|
| 24/30 | 100 - 200 Ah |
| 24/50 | 200 - 400 Ah |
| 24/50 3-Ph | 200 - 400 Ah |
| 48/25 | 100 - 200 Ah |
Power Supply Function:
Due to its perfectly stabilized output voltage, the Skylla-TG charger can be utilized as a power supply. This is particularly useful in systems where batteries or large buffer capacitors are not available, providing a reliable and consistent power source.
6. Maintenance
The Victron Energy Skylla-TG charger is designed for minimal maintenance. However, regular checks can help ensure its longevity and optimal performance:
- Cleaning: Periodically clean the exterior of the charger with a dry, soft cloth. Ensure ventilation openings are free from dust and debris. Do not use liquid cleaners.
- Connections: Annually inspect all electrical connections for tightness and corrosion. Loose connections can lead to overheating and poor performance.
- Environment: Ensure the operating environment remains within the specified temperature and humidity ranges.
- Ventilation: Verify that the charger's ventilation is not obstructed.
7. Troubleshooting
This section provides guidance for common issues you might encounter with your Skylla-TG charger. For more complex problems, please contact Victron Energy support or a qualified technician.
| Problem | Possible Cause | Solution |
|---|---|---|
| Charger not turning on | No AC/DC input power; Blown fuse; Loose connections. | Check power source and circuit breaker; Inspect and replace fuses if necessary; Verify all connections are secure. |
| Battery not charging | Incorrect battery connection; Battery deeply discharged; Charger in fault mode. | Check battery polarity and connections; Allow time for charger to recover deeply discharged battery (if supported); Refer to indicator lights for fault codes and consult manual. |
| Overheating | Insufficient ventilation; Overload. | Ensure adequate airflow around the charger; Reduce load if possible; Check for obstructions in ventilation openings. |
| No output voltage | Output short circuit; Internal fault. | Check for short circuits in the output wiring; Disconnect and reconnect power to reset; If problem persists, contact support. |
8. Specifications
| Attribute | Detail |
|---|---|
| Model Number | SDTG2400303 |
| Brand | Victron Energy |
| Product Dimensions | 14.37 x 5.79 x 9.84 inches (365 x 147 x 250 mm) |
| Item Weight | 11.88 pounds (5.4 Kilograms) |
| Output Voltage | 24 Volts |
| Output Current | 30 amp (main output) |
| Isolated Outputs | 1+1 (main + 4 amp secondary) |
| Operating Temperature | -40 to +50°C (-40 to 122°F) |
| Humidity | Max. 95% (non-condensing) |
| Manufacturer | Victron Energy |
| Color | Blue |
9. Warranty and Support
The Victron Energy Skylla-TG Battery Charger is manufactured by Victron Energy, a company with over 45 years of expertise in power solutions. For specific warranty terms and conditions, please refer to the documentation provided with your product or visit the official Victron Energy website.
For technical support, product information, or to explore other Victron Energy products, please visit the official Victron Energy store on Amazon or their corporate website:
- Victron Energy Amazon Store: Visit Store
- Victron Energy Website: www.victronenergy.com
Figure 8: Victron Energy Brand Philosophy
This image showcases the Victron Energy brand slogan, "Energy. Anytime. Anywhere.", reflecting their commitment to providing reliable power solutions globally.
