Product Overview This 100A MPPT solar charge controller is an advanced device designed to optimize the efficiency of photovoltaic systems. With its MPPT technology, it can accurately track the maximum power point, ensuring a tracking efficiency exceeding 99.5%. It features two 5V USB charging ports and a backlit LCD screen that displays real-time data. The controller is compatible with various battery types, including gel batteries, flooded batteries, and lithium iron phosphate batteries. **Technical Specifications** **Product Type: Solar Charge Controller** **Material: ABS** **Rated Current: 100A** **Maximum Solar Power Consumption (Voc):** 15-23V (12V battery); 30-45V (24V battery); 45-69V (36V battery); 60-90V (48V battery)** **Maximum Solar Power:** 1200W (12V battery); 2400W (24V battery); 3600W (36V battery); 4800W (48V battery)** **Installation** To install the controller, follow these steps: Connect the controller to the battery, paying attention to polarity. Connect the solar panel to the corresponding input terminal. Before powering on the system, ensure all connections are secure. **Operation** The controller offers several operating modes: **Charging Mode:** Charges the battery with optimized solar energy. **Light Control Mode:** Delays discharge for ten minutes after darkness is detected. **Timer Control Mode:** Allows programming of the discharge cycle. **Manual Mode:** Allows direct control of discharge. **Test Mode:** Simulation control mode with a shorter delay time. **To extend battery life, avoid over-discharge.** **Warning!** 1. This controller is automatically adaptable to 12V/24V/36V/48V. During the first installation, ensure the battery has sufficient voltage for the controller to recognize the correct battery type. 2. Install the controller as close to the battery as possible to avoid voltage drop caused by excessively long cables, which can affect normal voltage judgment. 3. This controller is suitable for various lead-acid batteries (including open, sealed, and gel types) and lithium batteries (overcharge voltage must be adjusted manually). Do not use other batteries (NiMH batteries, etc.). 4. This controller can only use a solar panel as a charging source. Do not use DC or other power sources as charging sources. 5. This controller will generate heat when operating. Ensure the controller is installed on a flat, well-ventilated surface.