{"product_id":"victron-12v-24v-25a-buck-boost-dc-dc-converter","title":"12V\/24V 25A Buck-Boost DC\/DC Converter","description":"\u003cdiv style=\"font-weight: bold;\"\u003e\n\u003ch2 style=\"color: #dd1d1d;\"\u003e⚡ VICTRON 12V\/24V 25A BUCK-BOOST DC\/DC CONVERTER\u003c\/h2\u003e\n\u003ch3 style=\"color: #00aaff;\"\u003eProgrammable DC-DC Service Battery Charger for 12V \u0026amp; 24V Vehicle Systems – Smart Alternator Compatible, Engine-Running Detection \u0026amp; Input Current Limiting\u003c\/h3\u003e\n\u003cp\u003e⚡ The Victron Buck-Boost DC\/DC Converter is designed for charging a 12V or 24V service battery in vehicles equipped with modern smart alternators, including applications associated with regenerative braking and Euro 5 and Euro 6 engine-management systems.\u003c\/p\u003e\n\u003cp\u003eModern vehicle alternators do not necessarily maintain a constant charging voltage while the engine is running. Depending on vehicle operating conditions and onboard electronics, alternator voltage can rise or fall significantly, which can make reliable auxiliary-battery charging difficult without appropriate DC-DC control.\u003c\/p\u003e\n\u003cp\u003eThe Victron Buck-Boost addresses this by providing a controlled, programmable charging output to the auxiliary battery. It can be configured for 12V or 24V auxiliary-battery systems supplied from either a 12V or 24V alternator and starter-battery system.\u003c\/p\u003e\n\u003cp\u003eA built-in engine-running detection system helps prevent unnecessary discharge of the vehicle's starting battery, while programmable activation can alternatively be achieved using a suitable D+, CAN bus or (+)15 connection according to the supplied information.\u003c\/p\u003e\n\u003cp\u003eThe converter can also be programmed through a PC application, allowing important parameters such as charge current, input-current limitation and system configuration to be tailored to the installation.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3 style=\"color: #00aaff;\"\u003e⚡ KEY FEATURES\u003c\/h3\u003e\n\u003cp\u003e\u003cspan style=\"color: #80ff00;\"\u003e🔋 Designed for Service Battery Charging\u003c\/span\u003e\u003cbr\u003ePurpose-built for charging compatible 12V or 24V auxiliary\/service batteries from a vehicle's alternator and starter-battery electrical system.\u003c\/p\u003e\n\u003cp\u003e\u003cspan style=\"color: #80ff00;\"\u003e🚗 Smart Alternator Compatible\u003c\/span\u003e\u003cbr\u003eDesigned for vehicles with intelligent or smart alternators, including systems associated with regenerative braking and Euro 5 and Euro 6 engines.\u003c\/p\u003e\n\u003cp\u003e\u003cspan style=\"color: #80ff00;\"\u003e⬆️⬇️ Buck-Boost Conversion\u003c\/span\u003e\u003cbr\u003eDesigned to control the charging output even when alternator voltage varies above or below the voltage required by the service-battery system.\u003c\/p\u003e\n\u003cp\u003e\u003cspan style=\"color: #80ff00;\"\u003e⚡ 12V \u0026amp; 24V System Flexibility\u003c\/span\u003e\u003cbr\u003eCan be programmed to charge a 12V or 24V auxiliary battery from either a 12V or 24V alternator and starter-battery system.\u003c\/p\u003e\n\u003cp\u003e\u003cspan style=\"color: #80ff00;\"\u003e🚦 Built-In Engine-Running Detection\u003c\/span\u003e\u003cbr\u003eAutomatically detects appropriate engine-running conditions to help prevent deep discharge of the vehicle's starting battery.\u003c\/p\u003e\n\u003cp\u003e\u003cspan style=\"color: #80ff00;\"\u003e🎛️ Programmable Activation Input\u003c\/span\u003e\u003cbr\u003eCan alternatively be activated through a programmable input using D+, CAN bus or (+)15 connection according to the supplied product information.\u003c\/p\u003e\n\u003cp\u003e\u003cspan style=\"color: #80ff00;\"\u003e💻 PC Programmable\u003c\/span\u003e\u003cbr\u003eCan be fully programmed using a dedicated PC application.\u003c\/p\u003e\n\u003cp\u003e\u003cspan style=\"color: #80ff00;\"\u003e🔌 USB Programming Connection\u003c\/span\u003e\u003cbr\u003eProgramming requires a USB Type-A male to USB Type-B male cable according to the supplied information.\u003c\/p\u003e\n\u003cp\u003e\u003cspan style=\"color: #80ff00;\"\u003e🔋 Adjustable Charge-Current Control\u003c\/span\u003e\u003cbr\u003eOutput current is influenced by the configured maximum charge-current setting.\u003c\/p\u003e\n\u003cp\u003e\u003cspan style=\"color: #80ff00;\"\u003e⚡ Input Current Limiting\u003c\/span\u003e\u003cbr\u003eMaximum input current can also be configured, helping the converter work within the limitations of the source electrical system.\u003c\/p\u003e\n\u003cp\u003e\u003cspan style=\"color: #80ff00;\"\u003e🌡️ Temperature-Based Output Limiting\u003c\/span\u003e\u003cbr\u003eMaximum operating temperature is one of the factors that determines the available output current.\u003c\/p\u003e\n\u003cp\u003e\u003cspan style=\"color: #80ff00;\"\u003e💡 Input Status LED\u003c\/span\u003e\u003cbr\u003eMulti-colour input-status indication provides information about converter operation, input voltage, engine-running detection and over-temperature conditions.\u003c\/p\u003e\n\u003cp\u003e\u003cspan style=\"color: #80ff00;\"\u003e💡 Output Status LED\u003c\/span\u003e\u003cbr\u003eProvides clear indication of output operation and service-battery voltage condition.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3 style=\"color: #00aaff;\"\u003e🚗 DESIGNED FOR MODERN SMART ALTERNATORS\u003c\/h3\u003e\n\u003cp\u003eModern smart alternators can behave very differently from traditional fixed-voltage charging systems.\u003c\/p\u003e\n\u003cp\u003eIn vehicles using intelligent alternator control, the alternator voltage may be actively varied by the vehicle's electronics depending on battery condition, acceleration, braking, fuel-efficiency strategy and other operating conditions.\u003c\/p\u003e\n\u003cp\u003eThe supplied product information specifically identifies applications involving:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e🚙 Vehicles with smart or intelligent alternators\u003c\/li\u003e\n\u003cli\u003e♻️ Regenerative-braking systems\u003c\/li\u003e\n\u003cli\u003e⚙️ Euro 5 engine applications\u003c\/li\u003e\n\u003cli\u003e⚙️ Euro 6 engine applications\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eThe Buck-Boost converter provides a controlled charging output to the service battery rather than relying directly on fluctuating alternator voltage.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3 style=\"color: #00aaff;\"\u003e🔋 CONTROLLED AUXILIARY BATTERY CHARGING\u003c\/h3\u003e\n\u003cp\u003eThe converter is designed to charge a compatible service battery using a pre-set charging voltage.\u003c\/p\u003e\n\u003cp\u003eThis helps prevent the auxiliary battery from simply being exposed to the varying voltage produced by the vehicle electrical system.\u003c\/p\u003e\n\u003cp\u003eThe supplied product information gives the example of high vehicle-system voltages such as 15.4V on some Mercedes applications, while smart alternators can also reduce voltage significantly under other operating conditions.\u003c\/p\u003e\n\u003cp\u003eThe Buck-Boost is designed to regulate these changing conditions into a controlled charging supply for the service battery.\u003c\/p\u003e\n\u003cp\u003e\u003cspan style=\"color: #dd1d1d;\"\u003e⚠️ IMPORTANT: The supplied information does not provide specific charge-voltage settings for individual battery chemistries. Configure the converter according to the requirements of the battery manufacturer and the applicable Victron instructions.\u003c\/span\u003e\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3 style=\"color: #00aaff;\"\u003e⬆️⬇️ BUCK-BOOST OPERATION\u003c\/h3\u003e\n\u003cp\u003eA Buck-Boost converter is designed to manage situations where the available input voltage may be either higher or lower than the required output voltage.\u003c\/p\u003e\n\u003cp\u003eThis is particularly valuable in modern vehicle charging systems where alternator voltage can fluctuate substantially during normal driving.\u003c\/p\u003e\n\u003cp\u003eRather than depending on the vehicle system to remain at a suitable charging voltage, the converter regulates the supply delivered to the auxiliary battery according to its programmed configuration.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3 style=\"color: #00aaff;\"\u003e⚡ ONE CONVERTER FOR MULTIPLE SYSTEM CONFIGURATIONS\u003c\/h3\u003e\n\u003cp\u003eThe supplied product information states that the Buck-Boost can be programmed to charge either a 12V or 24V auxiliary battery from either a 12V or 24V alternator and starter-battery system.\u003c\/p\u003e\n\u003cp\u003eSupported system arrangements therefore include compatible configurations such as:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e12V source system → 12V auxiliary-battery system\u003c\/li\u003e\n\u003cli\u003e12V source system → 24V auxiliary-battery system\u003c\/li\u003e\n\u003cli\u003e24V source system → 12V auxiliary-battery system\u003c\/li\u003e\n\u003cli\u003e24V source system → 24V auxiliary-battery system\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eThis flexibility allows one converter platform to accommodate a broad range of vehicle and auxiliary-power configurations.\u003c\/p\u003e\n\u003cp\u003e\u003cspan style=\"color: #dd1d1d;\"\u003e⚠️ IMPORTANT: The converter must be programmed correctly for the actual vehicle and service-battery voltage before operation.\u003c\/span\u003e\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3 style=\"color: #00aaff;\"\u003e🚦 BUILT-IN ENGINE-RUNNING DETECTION\u003c\/h3\u003e\n\u003cp\u003eThe Buck-Boost incorporates an engine-running detection system.\u003c\/p\u003e\n\u003cp\u003eThis function is designed to help prevent deep discharge of the vehicle's starting battery by ensuring the converter only operates when suitable engine-running conditions are detected.\u003c\/p\u003e\n\u003cp\u003eThis is especially important with modern smart-alternator systems because vehicle voltage alone may not behave like a traditional fixed-output alternator system.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3 style=\"color: #00aaff;\"\u003e🎛️ ALTERNATIVE PROGRAMMABLE ACTIVATION\u003c\/h3\u003e\n\u003cp\u003eInstead of relying solely on the built-in engine-running detection system, the converter can also be activated using a programmable input.\u003c\/p\u003e\n\u003cp\u003eThe supplied product information lists:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eD+ signal\u003c\/li\u003e\n\u003cli\u003eCAN bus*\u003c\/li\u003e\n\u003cli\u003e(+)15 connection\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eThis allows the converter's operation to be integrated into compatible vehicle-control arrangements where required.\u003c\/p\u003e\n\u003cp\u003e\u003cspan style=\"color: #dd1d1d;\"\u003e⚠️ IMPORTANT: The supplied source references CAN bus with an asterisk but does not include the associated footnote or detailed CAN-bus requirements. Do not assume direct compatibility with a particular vehicle CAN network without checking the applicable Victron documentation.\u003c\/span\u003e\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3 style=\"color: #00aaff;\"\u003e💻 FULLY PROGRAMMABLE BY PC\u003c\/h3\u003e\n\u003cp\u003eThe converter can be fully programmed using a dedicated PC application according to the supplied product information.\u003c\/p\u003e\n\u003cp\u003eThis allows the installation to be configured for the required electrical system rather than relying on one fixed factory operating arrangement.\u003c\/p\u003e\n\u003cp\u003eA USB Type-A male to USB Type-B male cable is required for programming.\u003c\/p\u003e\n\u003cp\u003e\u003cspan style=\"color: #dd1d1d;\"\u003e⚠️ IMPORTANT: The supplied information states that this USB cable is required but does not state that the cable is included with the converter.\u003c\/span\u003e\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3 style=\"color: #00aaff;\"\u003e⚡ CHARGE CURRENT \u0026amp; INPUT CURRENT LIMITING\u003c\/h3\u003e\n\u003cp\u003eThe converter's output current is determined by several operating parameters.\u003c\/p\u003e\n\u003cp\u003eThe supplied information identifies three main factors:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e⚡ Maximum charge-current setting\u003c\/li\u003e\n\u003cli\u003e🔌 Maximum input-current setting\u003c\/li\u003e\n\u003cli\u003e🌡️ Maximum operating-temperature limit of the converter\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eThis allows both the source side and battery-charging side of the installation to be considered when configuring the system.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3 style=\"color: #00aaff;\"\u003e🔌 INPUT CURRENT LIMITER\u003c\/h3\u003e\n\u003cp\u003eThe programmable maximum input-current setting can be used to limit the demand placed on the source electrical system.\u003c\/p\u003e\n\u003cp\u003eThis is particularly relevant where alternator capacity, vehicle wiring or another source-side limitation needs to be considered.\u003c\/p\u003e\n\u003cp\u003e\u003cspan style=\"color: #dd1d1d;\"\u003e⚠️ IMPORTANT: The correct current setting depends on the complete vehicle electrical system. Alternator capability, existing vehicle loads, cable size, voltage drop and protection all need to be considered.\u003c\/span\u003e\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3 style=\"color: #00aaff;\"\u003e🔋 CHARGE-CURRENT CONTROL\u003c\/h3\u003e\n\u003cp\u003eThe maximum charge-current setting determines one of the limits placed on the converter's output.\u003c\/p\u003e\n\u003cp\u003eThe product title identifies this model as the 25A Buck-Boost DC\/DC Converter.\u003c\/p\u003e\n\u003cp\u003eActual delivered charging current can still be affected by the configured input-current limit and the converter's operating-temperature limit.\u003c\/p\u003e\n\u003cp\u003e\u003cspan style=\"color: #dd1d1d;\"\u003e⚠️ IMPORTANT: The supplied product information provided here does not include a complete detailed electrical specification table. Confirm the current Victron technical documentation where exact maximum, continuous or temperature-dependent current capability is required for system design.\u003c\/span\u003e\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3 style=\"color: #00aaff;\"\u003e🌡️ TEMPERATURE-DEPENDENT OUTPUT\u003c\/h3\u003e\n\u003cp\u003eThe converter's maximum operating-temperature limit is one of the factors that determines available output current.\u003c\/p\u003e\n\u003cp\u003eThis means the actual charging current can be reduced when operating conditions require the converter to protect itself thermally.\u003c\/p\u003e\n\u003cp\u003eCorrect installation location and suitable ventilation are therefore important for maintaining dependable charging performance.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3 style=\"color: #00aaff;\"\u003e💡 INPUT STATUS LED INDICATION\u003c\/h3\u003e\n\u003cp\u003eThe Buck-Boost provides colour-coded input-side status indication to help identify operating conditions.\u003c\/p\u003e\n\u003cp\u003e\u003cspan style=\"color: #80ff00;\"\u003e🟢 Green – Converter On\u003c\/span\u003e\u003cbr\u003eIndicates that the converter is operating.\u003c\/p\u003e\n\u003cp\u003e\u003cspan style=\"color: #80ff00;\"\u003e🟡 Yellow – Input Voltage Below Threshold\u003c\/span\u003e\u003cbr\u003eThe converter is off because input voltage is below the configured or applicable threshold.\u003c\/p\u003e\n\u003cp\u003e\u003cspan style=\"color: #80ff00;\"\u003e🔴 Red – Over Temperature\u003c\/span\u003e\u003cbr\u003eThe converter is off because an over-temperature condition has been detected.\u003c\/p\u003e\n\u003cp\u003e\u003cspan style=\"color: #80ff00;\"\u003e🔵 Blue – Quick Flash\u003c\/span\u003e\u003cbr\u003eEngine-running condition has been detected and the converter will start after the preset delay.\u003c\/p\u003e\n\u003cp\u003e\u003cspan style=\"color: #80ff00;\"\u003e🔵 Blue – Slow Flash\u003c\/span\u003e\u003cbr\u003eThe converter is off and activation is blocked due to low input voltage.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3 style=\"color: #00aaff;\"\u003e💡 OUTPUT STATUS LED INDICATION\u003c\/h3\u003e\n\u003cp\u003eThe output-side LED provides information about converter state and service-battery voltage condition.\u003c\/p\u003e\n\u003cp\u003e\u003cspan style=\"color: #80ff00;\"\u003e🟢 Green – Converter Off \/ Battery Voltage Normal\u003c\/span\u003e\u003cbr\u003eThe converter is off and the connected battery voltage is considered normal according to the unit's configured operation.\u003c\/p\u003e\n\u003cp\u003e\u003cspan style=\"color: #80ff00;\"\u003e🟡 Yellow – Converter Off \/ Battery Voltage Low\u003c\/span\u003e\u003cbr\u003eIndicates a low service-battery voltage condition while the converter is off.\u003c\/p\u003e\n\u003cp\u003e\u003cspan style=\"color: #80ff00;\"\u003e🔴 Red – Battery Discharged or Not Connected\u003c\/span\u003e\u003cbr\u003eThe converter is off and the battery is either discharged or not connected according to the supplied status description.\u003c\/p\u003e\n\u003cp\u003e\u003cspan style=\"color: #80ff00;\"\u003e🟣 Purple – Converter On\u003c\/span\u003e\u003cbr\u003eIndicates that the converter is operating on the output side.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3 style=\"color: #00aaff;\"\u003e🚙 VEHICLE AUXILIARY-BATTERY SYSTEMS\u003c\/h3\u003e\n\u003cp\u003eThe Victron Buck-Boost is designed specifically for vehicle-based auxiliary-battery charging and is particularly relevant where the vehicle's alternator output cannot be relied upon to remain at a traditional fixed charging voltage.\u003c\/p\u003e\n\u003cp\u003ePotential compatible applications include:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e🚙 4WD auxiliary-battery systems\u003c\/li\u003e\n\u003cli\u003e🚐 Campervan electrical systems\u003c\/li\u003e\n\u003cli\u003e🚚 Commercial vehicle auxiliary systems\u003c\/li\u003e\n\u003cli\u003e🚑 Specialist and service vehicles\u003c\/li\u003e\n\u003cli\u003e🏗️ Machinery and mobile equipment\u003c\/li\u003e\n\u003cli\u003e🔋 12V auxiliary-battery installations\u003c\/li\u003e\n\u003cli\u003e🔋 24V auxiliary-battery installations\u003c\/li\u003e\n\u003cli\u003e⚡ Smart-alternator vehicle charging systems\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr\u003e\n\u003ch3 style=\"color: #00aaff;\"\u003e♻️ EURO 5 \u0026amp; EURO 6 VEHICLE APPLICATIONS\u003c\/h3\u003e\n\u003cp\u003eThe supplied product information specifically identifies vehicles with regenerative braking and Euro 5 or Euro 6 engines as applications for this converter.\u003c\/p\u003e\n\u003cp\u003eThese vehicles can use intelligent alternator control strategies that vary system voltage rather than maintaining a traditional constant charging voltage.\u003c\/p\u003e\n\u003cp\u003eThe Buck-Boost converter is designed to provide controlled service-battery charging despite those changing source conditions.\u003c\/p\u003e\n\u003cp\u003e\u003cspan style=\"color: #dd1d1d;\"\u003e⚠️ IMPORTANT: Euro 5 or Euro 6 classification alone does not guarantee the exact charging configuration of a particular vehicle. Confirm the vehicle's charging system before installation.\u003c\/span\u003e\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3 style=\"color: #00aaff;\"\u003e🔋 HELPS PROTECT THE STARTING BATTERY\u003c\/h3\u003e\n\u003cp\u003eThe built-in engine-running detection system is designed to prevent unnecessary deep discharge of the vehicle's starter battery.\u003c\/p\u003e\n\u003cp\u003eBy controlling when charging is permitted to begin, the converter helps separate auxiliary-battery charging from periods when the vehicle's source battery should not be heavily loaded.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3 style=\"color: #00aaff;\"\u003e⚡ MANAGES HIGH \u0026amp; LOW VEHICLE VOLTAGE\u003c\/h3\u003e\n\u003cp\u003eThe supplied product information states that the converter charges the auxiliary battery using a pre-set charge voltage, eliminating the effects of excessively high or low vehicle-system voltages on the charging supply.\u003c\/p\u003e\n\u003cp\u003eThe source specifically gives approximately 15.4V on some Mercedes applications as an example of a high vehicle-system voltage.\u003c\/p\u003e\n\u003cp\u003eThis controlled charging approach is one of the key reasons a DC-DC converter is useful in modern intelligent-alternator vehicles.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3 style=\"color: #00aaff;\"\u003e🔧 PROGRAMMABLE SYSTEM FLEXIBILITY\u003c\/h3\u003e\n\u003cp\u003eThe Buck-Boost is not limited to one fixed 12V-to-12V operating arrangement.\u003c\/p\u003e\n\u003cp\u003eIts programmable architecture allows compatible installations to be configured around different combinations of source and auxiliary-battery voltage.\u003c\/p\u003e\n\u003cp\u003eThis makes it particularly useful for specialised vehicle electrical systems where the source voltage and service-battery voltage are not necessarily the same.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3 style=\"color: #00aaff;\"\u003e📋 PRODUCT INFORMATION SUMMARY\u003c\/h3\u003e\n\u003cp\u003eProduct: Victron Buck-Boost DC\/DC Converter\u003c\/p\u003e\n\u003cp\u003eProduct designation: 12V to 24V 25A Buck-Boost DC\/DC Converter\u003c\/p\u003e\n\u003cp\u003eApplication: Vehicle service \/ auxiliary-battery charging\u003c\/p\u003e\n\u003cp\u003eSmart alternator support: Yes – according to supplied product information\u003c\/p\u003e\n\u003cp\u003eRegenerative-braking vehicle applications: Yes\u003c\/p\u003e\n\u003cp\u003eEuro 5 \/ Euro 6 applications: Yes\u003c\/p\u003e\n\u003cp\u003eSource-system configuration: Programmable for compatible 12V or 24V alternator \/ starter-battery systems\u003c\/p\u003e\n\u003cp\u003eAuxiliary-battery configuration: Programmable for compatible 12V or 24V service-battery systems\u003c\/p\u003e\n\u003cp\u003eEngine-running detection: Built in\u003c\/p\u003e\n\u003cp\u003eAlternative programmable activation: D+, CAN bus* or (+)15 according to supplied information\u003c\/p\u003e\n\u003cp\u003ePC programmable: Yes\u003c\/p\u003e\n\u003cp\u003eProgramming cable required: USB Type-A male to USB Type-B male\u003c\/p\u003e\n\u003cp\u003eMaximum charge-current setting: Programmable\u003c\/p\u003e\n\u003cp\u003eMaximum input-current setting: Programmable\u003c\/p\u003e\n\u003cp\u003eTemperature-related current limitation: Yes\u003c\/p\u003e\n\u003cp\u003eInput-status LED: Yes\u003c\/p\u003e\n\u003cp\u003eOutput-status LED: Yes\u003c\/p\u003e\n\u003cp\u003e\u003cspan style=\"color: #dd1d1d;\"\u003e⚠️ SPECIFICATION NOTE: A complete electrical specification table including exact input ranges, output-voltage limits, dimensions, weight, IP rating and detailed battery-chemistry settings was not included in the supplied information and has therefore not been added here.\u003c\/span\u003e\u003c\/p\u003e\n\u003chr\u003e\n\u003ch3 style=\"color: #00aaff;\"\u003e⚠️ INSTALLATION \u0026amp; COMPATIBILITY CHECKLIST\u003c\/h3\u003e\n\u003cp\u003eBefore installing the Victron Buck-Boost DC\/DC Converter, confirm that the complete vehicle and service-battery system is suitable.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eVehicle starter-system voltage confirmed\u003c\/li\u003e\n\u003cli\u003eAuxiliary\/service-battery nominal voltage confirmed\u003c\/li\u003e\n\u003cli\u003eVehicle smart-alternator behaviour identified\u003c\/li\u003e\n\u003cli\u003eBattery manufacturer's charging requirements confirmed\u003c\/li\u003e\n\u003cli\u003eMaximum charge-current setting configured correctly\u003c\/li\u003e\n\u003cli\u003eMaximum input-current setting configured correctly\u003c\/li\u003e\n\u003cli\u003eVehicle alternator capacity considered\u003c\/li\u003e\n\u003cli\u003eExisting vehicle electrical loads considered\u003c\/li\u003e\n\u003cli\u003eCorrect input and output cable sizing\u003c\/li\u003e\n\u003cli\u003eAppropriate external circuit protection\u003c\/li\u003e\n\u003cli\u003eEngine-running detection configured correctly\u003c\/li\u003e\n\u003cli\u003eProgrammable activation input configured correctly where used\u003c\/li\u003e\n\u003cli\u003eSuitable PC programming connection available\u003c\/li\u003e\n\u003cli\u003eAdequate installation ventilation\u003c\/li\u003e\n\u003cli\u003eCorrect polarity confirmed before connection\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cspan style=\"color: #dd1d1d;\"\u003e⚠️ IMPORTANT: Smart-alternator installations can vary substantially between vehicle manufacturers and models. Confirm the vehicle's electrical architecture and the applicable Victron installation requirements before wiring the converter.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan style=\"color: #dd1d1d;\"\u003e⚠️ IMPORTANT: Do not select charging voltage or current solely from the nominal battery voltage. Follow the battery manufacturer's charging specifications.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan style=\"color: #dd1d1d;\"\u003e⚠️ IMPORTANT: The supplied information does not nominate cable size or fuse ratings. These should be determined from the actual current, cable run, voltage drop and complete installation design.\u003c\/span\u003e\u003c\/p\u003e\n\u003chr\u003e\n\u003ch2 style=\"color: #dd1d1d;\"\u003e❓ FREQUENTLY ASKED QUESTIONS\u003c\/h2\u003e\n\u003ch3 style=\"color: #00aaff;\"\u003eWhat is the Victron Buck-Boost DC\/DC Converter designed for?\u003c\/h3\u003e\n\u003cp\u003eIt is designed to charge a compatible 12V or 24V service battery from a vehicle's alternator and starter-battery system, including vehicles equipped with intelligent or smart alternators.\u003c\/p\u003e\n\u003ch3 style=\"color: #00aaff;\"\u003eWhy is a DC-DC converter useful with a smart alternator?\u003c\/h3\u003e\n\u003cp\u003eSmart alternators can vary their output voltage considerably during normal vehicle operation. The Buck-Boost provides a controlled charging supply to the service battery rather than relying directly on changing alternator voltage.\u003c\/p\u003e\n\u003ch3 style=\"color: #00aaff;\"\u003eDoes it work with Euro 5 and Euro 6 vehicles?\u003c\/h3\u003e\n\u003cp\u003eThe supplied product information specifically identifies regenerative-braking, Euro 5 and Euro 6 vehicle systems as intended applications.\u003c\/p\u003e\n\u003ch3 style=\"color: #00aaff;\"\u003eDoes every Euro 5 or Euro 6 vehicle require the same setup?\u003c\/h3\u003e\n\u003cp\u003eNo. Charging-system behaviour can vary by manufacturer and vehicle configuration. The actual vehicle electrical system should be confirmed before installation.\u003c\/p\u003e\n\u003ch3 style=\"color: #00aaff;\"\u003eWhat does Buck-Boost mean?\u003c\/h3\u003e\n\u003cp\u003eIt refers to the converter's ability to regulate charging when the source voltage may be either above or below the required output voltage.\u003c\/p\u003e\n\u003ch3 style=\"color: #00aaff;\"\u003eCan it charge a 12V auxiliary battery?\u003c\/h3\u003e\n\u003cp\u003eYes. The supplied information states that the converter can be programmed to charge a compatible 12V service battery.\u003c\/p\u003e\n\u003ch3 style=\"color: #00aaff;\"\u003eCan it charge a 24V auxiliary battery?\u003c\/h3\u003e\n\u003cp\u003eYes. The supplied information states that it can also be programmed to charge a compatible 24V service battery.\u003c\/p\u003e\n\u003ch3 style=\"color: #00aaff;\"\u003eCan it operate from a 12V vehicle electrical system?\u003c\/h3\u003e\n\u003cp\u003eYes. The supplied information states that the converter can be programmed for use with a 12V alternator and starter-battery system.\u003c\/p\u003e\n\u003ch3 style=\"color: #00aaff;\"\u003eCan it operate from a 24V vehicle electrical system?\u003c\/h3\u003e\n\u003cp\u003eYes. The supplied information states that it can also be programmed for a 24V alternator and starter-battery system.\u003c\/p\u003e\n\u003ch3 style=\"color: #00aaff;\"\u003eCan it convert 12V to 24V for auxiliary-battery charging?\u003c\/h3\u003e\n\u003cp\u003eYes. The supplied product information states that a 24V auxiliary battery can be charged from a compatible 12V alternator and starter-battery system when the converter is correctly programmed.\u003c\/p\u003e\n\u003ch3 style=\"color: #00aaff;\"\u003eCan it convert 24V to 12V for auxiliary-battery charging?\u003c\/h3\u003e\n\u003cp\u003eYes. The supplied information states that a 12V auxiliary battery can also be charged from a compatible 24V source system when correctly configured.\u003c\/p\u003e\n\u003ch3 style=\"color: #00aaff;\"\u003eHow does it know when the engine is running?\u003c\/h3\u003e\n\u003cp\u003eThe converter incorporates a built-in engine-running detection system.\u003c\/p\u003e\n\u003ch3 style=\"color: #00aaff;\"\u003eWhy is engine-running detection important?\u003c\/h3\u003e\n\u003cp\u003eIt helps prevent the converter from unnecessarily discharging the vehicle's starter battery when charging conditions are not appropriate.\u003c\/p\u003e\n\u003ch3 style=\"color: #00aaff;\"\u003eCan I use another signal instead of automatic engine-running detection?\u003c\/h3\u003e\n\u003cp\u003eYes. The supplied information states that a programmable input may be used instead.\u003c\/p\u003e\n\u003ch3 style=\"color: #00aaff;\"\u003eWhat activation inputs are mentioned?\u003c\/h3\u003e\n\u003cp\u003eThe supplied information lists D+, CAN bus* and (+)15 connection as possible programmable activation methods.\u003c\/p\u003e\n\u003ch3 style=\"color: #00aaff;\"\u003eCan I connect it directly to any vehicle CAN bus?\u003c\/h3\u003e\n\u003cp\u003eDo not assume this. The supplied source references CAN bus but does not include the associated footnote or detailed compatibility requirements. Check the applicable Victron documentation for the vehicle and installation.\u003c\/p\u003e\n\u003ch3 style=\"color: #00aaff;\"\u003eCan the converter be programmed?\u003c\/h3\u003e\n\u003cp\u003eYes. The supplied information states that it is fully programmable using a PC application.\u003c\/p\u003e\n\u003ch3 style=\"color: #00aaff;\"\u003eWhat cable is required for programming?\u003c\/h3\u003e\n\u003cp\u003eA USB Type-A male to USB Type-B male cable is required according to the supplied information.\u003c\/p\u003e\n\u003ch3 style=\"color: #00aaff;\"\u003eIs the USB programming cable included?\u003c\/h3\u003e\n\u003cp\u003eThe supplied information states that the cable is required but does not state that it is included.\u003c\/p\u003e\n\u003ch3 style=\"color: #00aaff;\"\u003eCan the charging current be adjusted?\u003c\/h3\u003e\n\u003cp\u003eThe supplied information states that maximum charge current is one of the programmable factors determining converter output current.\u003c\/p\u003e\n\u003ch3 style=\"color: #00aaff;\"\u003eCan input current be limited?\u003c\/h3\u003e\n\u003cp\u003eYes. A maximum input-current setting is one of the supplied programmable parameters.\u003c\/p\u003e\n\u003ch3 style=\"color: #00aaff;\"\u003eWhy would I limit the input current?\u003c\/h3\u003e\n\u003cp\u003eInput-current limiting can help configure converter demand to suit the capacity of the source electrical system, subject to the complete vehicle installation requirements.\u003c\/p\u003e\n\u003ch3 style=\"color: #00aaff;\"\u003eDoes temperature affect charge current?\u003c\/h3\u003e\n\u003cp\u003eYes. The supplied information states that the converter's maximum operating-temperature limit is one of the factors that determines available output current.\u003c\/p\u003e\n\u003ch3 style=\"color: #00aaff;\"\u003eWhat does a green input LED mean?\u003c\/h3\u003e\n\u003cp\u003eGreen indicates that the converter is on.\u003c\/p\u003e\n\u003ch3 style=\"color: #00aaff;\"\u003eWhat does a yellow input LED mean?\u003c\/h3\u003e\n\u003cp\u003eYellow indicates that the input voltage is below the required threshold and the converter is off.\u003c\/p\u003e\n\u003ch3 style=\"color: #00aaff;\"\u003eWhat does a red input LED mean?\u003c\/h3\u003e\n\u003cp\u003eRed indicates an over-temperature condition and the converter is off.\u003c\/p\u003e\n\u003ch3 style=\"color: #00aaff;\"\u003eWhat does a quickly flashing blue input LED mean?\u003c\/h3\u003e\n\u003cp\u003eIt indicates that engine running has been detected and the converter will start after its preset delay.\u003c\/p\u003e\n\u003ch3 style=\"color: #00aaff;\"\u003eWhat does a slowly flashing blue input LED mean?\u003c\/h3\u003e\n\u003cp\u003eIt indicates that the converter is off and activation is blocked because the input voltage is too low.\u003c\/p\u003e\n\u003ch3 style=\"color: #00aaff;\"\u003eWhat does a green output LED mean?\u003c\/h3\u003e\n\u003cp\u003eAccording to the supplied information, green indicates that the converter is off and service-battery voltage is normal.\u003c\/p\u003e\n\u003ch3 style=\"color: #00aaff;\"\u003eWhat does a yellow output LED mean?\u003c\/h3\u003e\n\u003cp\u003eYellow indicates that the converter is off and service-battery voltage is low.\u003c\/p\u003e\n\u003ch3 style=\"color: #00aaff;\"\u003eWhat does a red output LED mean?\u003c\/h3\u003e\n\u003cp\u003eRed indicates that the converter is off and the battery is discharged or not connected.\u003c\/p\u003e\n\u003ch3 style=\"color: #00aaff;\"\u003eWhat does a purple output LED mean?\u003c\/h3\u003e\n\u003cp\u003ePurple indicates that the converter is on.\u003c\/p\u003e\n\u003ch3 style=\"color: #00aaff;\"\u003eCan I use this with an AGM battery?\u003c\/h3\u003e\n\u003cp\u003eThe supplied information confirms programmable service-battery charging but does not provide battery-chemistry-specific charging parameters. Confirm the AGM battery manufacturer's required settings and the applicable Victron configuration guidance.\u003c\/p\u003e\n\u003ch3 style=\"color: #00aaff;\"\u003eCan I use this with a lithium battery?\u003c\/h3\u003e\n\u003cp\u003eThe supplied information does not specifically state lithium compatibility or provide lithium-specific charging settings. Confirm compatibility with the exact battery, BMS and current Victron documentation before installation.\u003c\/p\u003e\n\u003ch3 style=\"color: #00aaff;\"\u003eDoes it protect the vehicle's starter battery?\u003c\/h3\u003e\n\u003cp\u003eThe built-in engine-running detection system is specifically intended to help avoid deep discharge of the vehicle's starting battery.\u003c\/p\u003e\n\u003ch3 style=\"color: #00aaff;\"\u003eIs the product permanently set for 12V to 24V operation?\u003c\/h3\u003e\n\u003cp\u003eNo. The supplied information states that the converter can be programmed for different combinations of 12V and 24V source and service-battery systems.\u003c\/p\u003e\n\u003ch3 style=\"color: #00aaff;\"\u003eWhat is the maximum current?\u003c\/h3\u003e\n\u003cp\u003eThe product designation identifies this version as the 25A model. The supplied information also states that actual output current is determined by the maximum charge-current setting, maximum input-current setting and maximum operating-temperature limit.\u003c\/p\u003e\n\u003ch3 style=\"color: #00aaff;\"\u003eWhat cable size and fuse should I use?\u003c\/h3\u003e\n\u003cp\u003eThe supplied information does not specify cable size or fuse ratings. These should be selected according to the actual configured current, cable length, voltage drop, source capacity and applicable installation requirements.\u003c\/p\u003e\n\u003ch3 style=\"color: #00aaff;\"\u003eWhat should I check before ordering?\u003c\/h3\u003e\n\u003cp\u003eConfirm the vehicle's starter-system voltage, service-battery voltage, smart-alternator behaviour, required battery charge settings, available alternator capacity, desired current limits, control method and installation requirements before purchase.\u003c\/p\u003e\n\u003chr\u003e\n\u003ch2 style=\"color: #dd1d1d;\"\u003e⚡ PROGRAMMABLE SMART-ALTERNATOR CHARGING FOR MODERN VEHICLE ELECTRICAL SYSTEMS\u003c\/h2\u003e\n\u003cp\u003eThe Victron 12V to 24V 25A Buck-Boost DC\/DC Converter is designed for vehicle installations where reliable auxiliary-battery charging cannot depend on a traditional fixed alternator voltage.\u003c\/p\u003e\n\u003cp\u003eWith smart-alternator support, Buck-Boost voltage control, built-in engine-running detection, programmable D+ \/ CAN bus* \/ (+)15 activation options, PC configuration, charge-current control, input-current limiting and support for both 12V and 24V source and service-battery arrangements, it provides considerable flexibility for modern and specialised vehicle electrical systems.\u003c\/p\u003e\n\u003cp\u003eCorrect programming and installation are essential. Confirm the vehicle charging system, battery requirements, current limits, wiring, protection and activation method before installation to ensure the converter is correctly configured for the application.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"VICTRON ENERGY","offers":[{"title":"Default Title","offer_id":45479375077624,"sku":"ORI303025000","price":837.0,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0652\/9230\/4632\/files\/1589308645_upload_documents_1600_640_q90-25ABuck-BoostDC-DCconverter_top.png?v=1729751978","url":"https:\/\/www.homeof12volt.com.au\/products\/victron-12v-24v-25a-buck-boost-dc-dc-converter","provider":"Home of 12 Volt Northern","version":"1.0","type":"link"}