{"product_id":"srne-saa-1250-3-in-1-charge-controller","title":"SRNE 3 in 1 Charger AC DC MPPT","description":"\u003cp\u003e\u003cspan\u003eThe \u003c\/span\u003e\u003cstrong\u003e\u003cspan\u003eSRNE SAA1250 3-in-1 Battery Charger\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e combines MPPT solar charging, DC-DC alternator charging and 230V mains battery charging in one integrated unit. Designed for campervans, motorhomes, caravans and off-grid electrical systems, it provides a convenient way to maintain leisure batteries from multiple power sources without installing three separate chargers.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eThe integrated \u003c\/span\u003e\u003cstrong\u003e\u003cspan\u003e50A MPPT solar charge controller\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e maximises the energy harvested from connected solar panels, supporting solar arrays up to 700W on a 12V battery system. Maximum Power Point Tracking technology continually adjusts the solar operating point to make efficient use of available sunlight, particularly during changing weather conditions.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eWhen travelling, the built-in \u003c\/span\u003e\u003cstrong\u003e\u003cspan\u003eDC-DC battery charger\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e regulates power from the vehicle's alternator to charge the leisure battery. It supports suitable conventional and smart alternator systems, providing controlled battery charging rather than simply connecting the starter and leisure batteries together.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eWhen connected to a suitable 230V mains supply, the SAA1250 operates as an AC battery charger, delivering up to 50A of charging current to a 12V leisure battery. Its intelligent charging management supports multiple operating modes, allowing solar, alternator and mains power to be used according to the installation and available charging sources.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eThe charger supports \u003c\/span\u003e\u003cstrong\u003e\u003cspan\u003elithium and lead-acid leisure batteries\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e, including compatible LiFePO4, AGM and GEL batteries. Built-in Bluetooth allows charging information and supported settings to be accessed through the SRNE mobile app without requiring an additional Bluetooth module.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eWith dual-battery charging management, multiple communication interfaces and compatibility with the wider SRNE Eco System, the SAA1250 provides a versatile charging solution for modern campervan and motorhome electrical installations.\u003c\/span\u003e\u003c\/p\u003e\n\u003ch2\u003e\u003cspan\u003eFeatures\u003c\/span\u003e\u003c\/h2\u003e\n\u003cp\u003e\u003cspan\u003e• Combines MPPT solar, DC-DC alternator and AC mains charging in one unit\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003e• Suitable for 12V and 24V leisure battery systems\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003e• Up to 50A MPPT solar charging for 12V batteries\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003e• Supports solar arrays up to 700W on 12V systems\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003e• Maximum solar panel open-circuit voltage of 65V DC\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003e• Up to 50A mains battery charging on 12V systems\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003e• Intelligent DC-DC charging from suitable vehicle alternators\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003e• Compatible with lithium, LiFePO4, AGM, GEL and flooded lead-acid batteries\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003e• Built-in Bluetooth for smartphone monitoring and configuration\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003e• Multiple charging modes for flexible power management\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003e• Supports starter battery maintenance charging in compatible configurations\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003e• MPPT tracking efficiency greater than 99%\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003e• Maximum charging conversion efficiency of 96%\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003e• TTL, RS485 and CAN communication interfaces\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003e• Compatible with the wider SRNE Eco System\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003e• Integrated electrical protection functions\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003e• Reduces installation space compared with three separate chargers\u003c\/span\u003e\u003c\/p\u003e\n\u003ch2\u003e\u003cspan\u003eTechnical Specifications\u003c\/span\u003e\u003c\/h2\u003e\n\u003ch3\u003e\u003cspan\u003eGeneral\u003c\/span\u003e\u003c\/h3\u003e\n\u003cp\u003e\u003cspan\u003e• Manufacturer: SRNE\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003e• Model: SAA1250\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003e• Product type: 3-in-1 MPPT, DC-DC and AC battery charger\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003e• Rated leisure battery voltage: 12V \/ 24V DC\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003e• Leisure battery voltage range: 9–32V DC\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003e• Supported battery types: Lead-acid, lithium and user-defined\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003e• MPPT tracking efficiency: Greater than 99%\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003e• Maximum charging conversion efficiency: 96%\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003e• Bluetooth: Built-in\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003e• Communication interfaces: TTL \/ RS485 \/ CAN\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003e• Operating temperature: -35°C to +65°C\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003e• Maximum operating altitude: 3000m\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003e• Protection rating: IP43 electronic components \/ IP22 wiring terminals\u003c\/span\u003e\u003c\/p\u003e\n\u003ch3\u003e\u003cspan\u003eMPPT Solar Charging\u003c\/span\u003e\u003c\/h3\u003e\n\u003cp\u003e\u003cspan\u003e• Maximum PV open-circuit voltage: 65V DC\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003e• MPPT operating voltage range: 15–50V DC\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003e• Maximum PV input current: 50A\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003e• Maximum solar input power: 700W at 12V\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003e• Rated solar charging current: 50A at 12V \/ 25A at 24V\u003c\/span\u003e\u003c\/p\u003e\n\u003ch3\u003e\u003cspan\u003eDC-DC Alternator Charging\u003c\/span\u003e\u003c\/h3\u003e\n\u003cp\u003e\u003cspan\u003e• Starter battery system voltage: 12V \/ 24V DC\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003e• Starter battery type: Lead-acid\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003e• Rated alternator charging current: 50A at 12V \/ 25A at 24V\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003e• Maximum alternator input current: 65A\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003e• Charging technology: Buck \/ boost conversion\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003e• Smart alternator compatibility: Supported with appropriate installation and configuration\u003c\/span\u003e\u003c\/p\u003e\n\u003ch3\u003e\u003cspan\u003eAC Mains Charging\u003c\/span\u003e\u003c\/h3\u003e\n\u003cp\u003e\u003cspan\u003e• AC input voltage: 90–265V AC\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003e• AC input frequency: 45–65Hz\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003e• Rated mains charging current: 50A at 12V \/ 25A at 24V\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003e• Suitable for compatible 230V mains hookup installations\u003c\/span\u003e\u003c\/p\u003e\n\u003ch3\u003e\u003cspan\u003eDimensions \u0026amp; Weight\u003c\/span\u003e\u003c\/h3\u003e\n\u003cp\u003e\u003cspan\u003e• Dimensions (unboxed): 255 × 196 × 90mm\u003c\/span\u003e\u003cbr\u003e\u003cspan\u003e• Net weight (unboxed): 4.5kg\u003c\/span\u003e\u003c\/p\u003e\n\u003ch2\u003e\u003cspan\u003eInstallation Information\u003c\/span\u003e\u003c\/h2\u003e\n\u003cp\u003e\u003cspan\u003eThe SRNE SAA1250 is installed between the vehicle's alternator or starter battery supply, solar panel array, mains electrical supply and leisure battery. Its integrated charging functions regulate power from the available sources according to the selected operating mode.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eCorrect cable sizing, suitable fuses, electrical isolation and appropriate circuit protection are essential. The mains input must be installed in accordance with applicable electrical safety requirements and the manufacturer's instructions.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eFor lithium leisure batteries, the charging parameters should be configured according to the battery manufacturer's recommendations. The installation must also account for the battery's maximum permitted charging current and Battery Management System (BMS) limits.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eThe SAA1250 can operate independently or be integrated with compatible SRNE Eco System equipment for expanded monitoring and control.\u003c\/span\u003e\u003c\/p\u003e","brand":"SRNE","offers":[{"title":"Default Title","offer_id":54347281301832,"sku":"S-1-SR-SAA1250-1","price":350.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0816\/9691\/5784\/files\/Untitled-22October2026at13.46.33-1.png?v=1792676896","url":"https:\/\/rebel-leisure.co.uk\/products\/srne-saa-1250-3-in-1-charge-controller","provider":"Rebel Leisure Direct Ltd","version":"1.0","type":"link"}