Victron 48V 25A Skylla-TG 48/25 (1+1) Uin 230VAC/45-65Hz CE Battery Charger
Industrial-grade charging with stable DC supply, multi-stage battery care and built-in protection for 48V marine, industrial and standby power systems
DESCRIPTION
Professional battery charging for marine, industrial and standby power systems
Victron Skylla-TG 48/25 is engineered for dependable battery charging in demanding applications where stable DC supply, battery health and clear system status all matter. Designed for 48V marine, industrial and standby power systems, it combines a proven three-step IUoUo charging profile with robust protection features to support reliable operation across a wide range of installation environments in Australia.
For operators managing house batteries, service banks, standby systems or mission-critical DC loads, this charger helps reduce common charging issues such as undercharging, unnecessary battery stress and unstable supply voltage. The controlled charging process moves through bulk, absorption and float stages to better support battery condition over time while maintaining practical day-to-day usability.
A key advantage is its ability to function as both a battery charger and a DC power supply. This is particularly useful where onboard equipment, communications hardware, control systems or other DC loads need a steady source of power while the battery bank remains properly maintained. For installations that demand continuity and cleaner system integration, this can simplify the electrical setup and reduce the need for separate devices.
The front panel LED indicators provide at-a-glance visibility of output voltage, output current and charging status, making it easier to monitor charger behaviour without external tools. This is valuable for installers, fleet operators and vessel owners who need quick confirmation that the charger is operating as expected.
Built for real-world operating conditions, the unit features forced cooling and multiple protective functions, including safeguards for output short circuit, reverse polarity detection, high battery voltage and excessive temperature. These features help reduce the risk of charger shutdowns, wiring mistakes causing damage, and battery system stress in hard-working installations.
The aluminium enclosure is suited to fixed installation use and supports reliable operation in workshops, plant rooms, marine electrical systems and other enclosed service areas. With support for a broad input supply on applicable versions, it can suit installations where mains availability or onboard supply conditions vary.
Where fitted, the additional auxiliary output is useful for maintaining a starter battery alongside the main battery bank, helping support systems that rely on separate cranking and service batteries without needing a second charger.
Key features
- Three-step IUoUo charging to support correct battery charging and float maintenance
- Can operate as a battery charger and DC power supply for connected equipment
- Front panel LED indication for voltage, current and charging status
- Protective functions for short circuit, reverse polarity, high battery voltage and over-temperature conditions
- Forced cooling for dependable performance in demanding service environments
- Remote alarm capability on applicable versions for easier system integration
- Temperature sensor support to help charging remain appropriate to battery conditions
Why this charger suits demanding installations
In marine, emergency, off-grid support and industrial backup applications, charger quality affects more than charge time alone. A well-designed charger can help improve battery service life, support connected loads more consistently and reduce the likelihood of nuisance issues caused by unstable charging behaviour. That is where Victron Skylla-TG 48/25 stands apart from lower-grade alternatives that may offer limited protection, less stable output or less suitable charging control for continuous-duty use.
If your system needs a charger that can maintain battery readiness, support essential DC equipment and provide straightforward visual status feedback, this unit is a practical fit for professional installations. For 48V marine, industrial and standby power systems, it offers a strong balance of charging performance, installation flexibility and operational confidence.
If you are building or maintaining a reliable DC power system, Victron Skylla-TG 48/25 is a solid choice for keeping your batteries charged and your equipment ready for service.
SKU: VIC-SDTG4800251
SPECIFICATIONS
Specifications
| Input Voltage | 230 V AC |
|---|---|
| Input Voltage Range (AC) | 185-264 V AC |
| Input Voltage Range (DC) | 180-400 V DC |
| Frequency | 45-65 Hz |
| Power Factor | 1 |
| Charge Voltage 'Absorption' | 57 V DC |
| Charge Voltage 'Float' | 53 V DC |
| Charge Current House Batt. | 25 A |
| Charge Current Starter Batt. | N.A. |
| Charge Characteristic | IUoUo (Three Step) |
| Battery Capacity | 125-250 Ah |
| Temperature Sensor | √ |
| Can Be Used As Power Supply | √ |
| Remote Alarm | Potential Free Contacts 60 V / 1 A (1x NO and 1x NC) |
| Forced Cooling | √ |
| Protection | Output Short Circuit; Battery Reverse Polarity Detection; Battery Voltage Too High; Temperature Too High |
| Operating Temp. Range | -40 to +50 °C (-40 to 122 °F) |
| Humidity (Non-Condensing) | Max 95% |
| Material & Colour | Aluminium (Blue RAL 5012) |
| Battery-Connection | M8 Studs |
| 230 V AC-Connection | Screw-Clamp 2.5 mm² (AWG 6) |
| Protection Category | IP 21 |
| Weight | 5.5 kg (12.1 lbs) |
| Dimensions (H x W x D) | 365 x 250 x 147 mm (14.4 x 9.9 x 5.8 in) |
| Safety | EN 60335-1, EN 60335-2-29 |
| Emission | EN 55014-1, EN 61000-3-2 |
| Immunity | EN 55014-2, EN 61000-3-3 |
| SKU: | VIC-SDTG4800251 |
| Barcode: | 8719076025801 |
| Model #: | SDTG4800251 |
| MPN: | SDTG4800251 |
WARRANTY
Victron Energy Limited Warranty Policy
Victron Energy warrants its products to be free from defects in workmanship and materials for a period of 5 years from the date of purchase by the end user, with a maximum of 66 months from the Victron Energy invoice date. Exceptions on this are: lead acid batteries; 2 years from date of purchase by the end user, with a maximum of 30 months from the Victron Energy invoice date, Lithium-ion batteries; 3 years from date of purchase by the end user. In addition to this proof of correct battery usage is required when making a battery warranty claim.
During this period, Victron Energy will, at its option, repair or replace the defective product free of charge. The warranty does not include performing or reimbursing de‐installation, transportation and re‐installation. This warranty will be considered void if the unit has suffered any physical damage or alteration, either internally or externally, and does not cover damages arising from improper use like: • Reverse of battery polarity. • Inadequate connection. • Mechanical shock or deformation. • Contact with liquid or oxidation by condensation. • Use in inappropriate environment (dust, corrosive vapor, humidity, high temperature, biological infestation...). • Breakage or damage due to lightning. • Connection terminals and screws destroyed or other damages, like overheat, due to insufficient tightening. • For any electronical breakage except due to lightning (reverse polarity, over‐voltage due to external cause), the state ofthe internal control diode and of the inputs/output X and Y capacitors determine the warranty.
This warranty will not apply where the product has been misused, neglected, improperly installed, or repaired by anyone else than Victron Energy or one of its authorized Qualified Service Partners. In order to qualify for the warranty, the product must not be disassembled or modified.
Repair or replacement are our sole remedies and Victron Energy shall not be liable for damages, whether direct, incidental,special, or consequential, even caused by negligence or fault.
Victron Energy owns all parts removed from repaired products. Victron Energy uses new or reconditioned parts made by various manufacturers in performing warranty repairs and building replacement products. If Victron Energy repairs or replaces a part of a product, its warranty term is not extended. In case of replacement the new component has a warranty of 6 months, without effect on the initial warranty period. All remedies and the measure for damages are limited to the above. Victron Energy shall in no event be liable for consequential, incidental, contingent orspecial damages, even if having been advised of the probability of such damages. Any and all other warranties expressed or implied arising by law, course of dealing, course of performance, usage of trade or otherwise, including but not limited to implied warranties of merchantability and fitness for a particular purpose, are limited in duration to a period of two (2) years from the date of purchase.
Life Support Policy As a general policy, Victron Energy, does not recommend the use of any of its products in life support applications where failure or malfunction of the Victron Energy's product can be reasonably expected to cause failure of the life support device or to significantly affect its safety or effectiveness. Victron Energy does not recommend the use of any of its products in direct patient care. Victron Energy will not knowingly sell its products for use in such applications unless it receives in writing assurances satisfactory to Victron Energy that the risks of injury or damage have been minimized, the customer assumes all such risks, and the Liability of Victron Energy is adequately protected under the circumstances.
As a product requires service, it must be brought back to the place of purchase. In case no contact can be taken with the merchant, or if he is either unable or not allowed to provide service, direct contact should be taken with Victron Energy.
Warranty on Repairs The warranty period on products or on printed circuits boards repaired by Victron Energy as well as on printed circuit boards for replacement is 6 months from delivery by Victron Energy.
Transport It is the responsibility of the sender to sufficiently package these products. The transport must be organized in a way to avoid any damage, especially when a single unit or heavy unit is sent.
Severability If a part of the terms and conditions set out above is held invalid, void or unenforceable due to any particular national or international legislation, it shall not affect other parts of the terms and conditions remaining.
For Australia only Our goods come with guarantees that cannot be excluded under the Australian Consumer Law. You are entitled to a replacement or refund for a major failure and compensation for any other reasonably foreseeable loss or damage. You are also entitled to have the goods repaired or replaced if the goods fail to be of acceptable quality and the failure does not amount to a major failure.
Exotronic provides high-quality products and solutions tailored for B2B and commercial customers, including commercial businesses, caravan manufacturers, marine electricians, OEMs, as well as emergency services, and more.




