The SRNE SAA 50A MPPT is a high-efficiency dual-input solar charge controller, designed to charge an auxiliary (leisure) battery directly from both solar panels and the vehicle alternator. Engineered for motorhomes, campervans, boats, and off-grid power systems, it offers intelligent energy management, advanced charging control, and excellent reliability. This innovative controller automatically charges the leisure battery from the alternator when the starter battery voltage rises above 13.7V, and stops when it drops below 13.2V, ensuring safe and efficient alternator charging. Its MPPT (Maximum Power Point Tracking) technology can support up to 700W solar panels at 12V or 1400W solar panels at 24V. The buck-boost DC-DC conversion can deliver up to 65A from the alternator to the leisure battery with up to 98% efficiency, optimising power usage from every energy source. The SAA 50A MPPT supports multiple charging modes — solar charging, alternator charging, combined solar and alternator charging, and even solar charging of the starter battery. It’s compatible with a wide range of batteries, including Sealed (AGM), Gel, Flooded (vented), and Lithium Iron Phosphate (LiFePO₄) types. Customisable charging parameters allow you to tailor performance to your specific setup. In addition it has a built in charger to charge your leisure battery from the grid at a charge rates of up to 50A. Designed for energy efficiency, it consumes just 0.6W in standby mode. When connected bluetooth, you can access real-time system data, historical logs, and parameter settings via the SRNE mobile app for complete control and monitoring.The SRNE SAA MPPT is truly an all round device at a fraction of the cost of individual devices. Key Benefits 1. All-in-One Simplicity & Lower System CostThe SRNE packs solar MPPT, DC-DC alternator charging, and mains/shore AC charging in a single box — so you don’t need to buy 3 separate units. With other solutions, you’d typically need a separate MPPT controller + a DC-DC charger + an AC charger to get the same multi-source charging capability — and that adds cost, wiring time and installation complexity. 2. Less Wiring, Less ComplexityBecause it’s one integrated unit, you have fewer devices to mount, fewer cables running around your van/boat, and fewer potential fault points.3. Better Value for MoneyMany people choosing SRNE gear do so primarily because the price is often ~40–60% lower than equivalents for similar spec ranges.4. CompactWith one device doing the work of three there is a massive advantage where space is a premium. 5. SRNE Data System compatible.The SRNE SAA can be used as a stand alone product with built in bluetooth, controlled via the SRNE APP. Alternatively, it is 100% compatible with the SRNE ECO System that includes items such as the CU and RMA touch panel for even more information and even remote control.A word about SRNE - SRNE is a globally established manufacturer specialising in inverters, solar charge controllers, and energy storage solutions for both residential and mobile applications. Widely recognised as one of the world’s leading producers of solar controllers and RV power solutions, SRNE supplies technology to markets across Europe, Asia, and beyond. Make no mistake — SRNE products are engineered and manufactured to high international standards, combining proven reliability, robust build quality, and smart charging technology to deliver a dependable, high-performance energy solution you can trust. Technical Highlights:Maximum PV Input Power: 700W (12v) 1400W (24v)System Voltage: 12V / 24VMPPT Voltage Range: 15–50VDCMaximum PV Input Current: 50AMaximum PV Open Circuit Voltage: 65VDCAC Rated Charging: 12V-50A / 24V-30AMaximum Generator Input: 50A
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