Yangtze MPPT Solar Charge Controller 45A  is an industrial grade product with advanced Maximum Power Point Tracking (MPPT) algorithm. It can deliver the maximum available power for charging batteries and charge a lower nominal voltage battery from a higher nominal voltage array. And can be applied in the off-grid PV systems up to 3KW.MPPT Solar Charge Controller 45A  Features：·Advanced MPPT technology,Website: , with efficiency no less than 99.5%.Ÿ·Maximum conversion efficiency of 98% and full load efficiency of 97%.Ÿ·MSRT, realizing high conversion efficiency in the situation of low charge power.Ÿ·Ultra-fast tracking speed and guaranteed tracking efficiency.·Accurately recognizing and tracking of multiple power points.·Reliable automatic limit function of maximum PV input power, ensuring no overload under any circumstance. ·Wide MPP operating voltage range.·High-speed and high-powered dual-core processor architecture, improving system response speed, optimizing system performance.·Die-cast aluminum case for heat dissipating, ensuring excellent heat dissipation characteristic. ·12/24/36/48VDC automatically identifying system voltage or user-defined working voltage.·Concise human-computer interactive interface, convenient multiple combination keys, dynamically displaying system operating data and working condition. ·Support 4 charging options: Sealed, Gel, Flooded and User.·Battery temperature compensation function.·Real-time energy statistics function.·With RS-485, RS-232 communication bus interface and Modbus communication protocol, it is available to meet various communication requirements in different situations.·Available for PC monitoring and external display unit connecting like MT50 and so on, realizing real-time data checking and parameters setting.·Support software upgradeMPPT Solar Charge Controller 45A  Electronic Protections:·PV short circuit protection·PV over current protection·PV reverse polarity protection·Battery over voltage protection·Battery over discharge protection·Battery reverse polarity protection·Battery overheating protection·Controller overheating protection