Features:Multiple Operation ModesThis solar controller with 7 different operation modes for your different need, including charging, light control, time-delay control, general control, manual control, timing control, and factory test mode. Intelligent LCD DisplayEquipped with a large LCD display, the controller presents real-time information on battery and solar panel status, mode control, load output status, and various parameters. Visual interface easy monitoring and management. Efficient MPPT ChargingThe controller features an automatic Maximum Power Point Tracking (MPPT) charging mechanism, 30 percent higher than the traditional PWM solar charger, which significantly improves the conversion rate of the circuit. Wide Compatibility and conservationCompatible with different battery and solar panel voltage configurations, supports 12V or 24V or 36V or 48V systems.Solar charge controller compatible with seal, GEL, flooded, LifePO4 battery charging. Safe Voltage conservationMPPT solar controller with battery over-voltage and over-current conservation, power failure conservation, overcharge conservation, deep discharge conservation, reverse connection conservation, and overheat temperature conservation. Dual USB OutputsMPPT charge controller supports charging for various USB devices, such as phones, tablets, game consoles, headphones, cameras and other digital products. Note: 1.Charge 12V battery with 15-23V solar panels, charge 24V battery with 30-46V solar panels, charge 36V battery with 45-66V solar panels, charge 48V battery with 60-90V solar panels.DO NOT USE 24V or 36V or 48V solar panels to charge a 12V battery, the pressure difference is too large may cause overheating and damage the controller. 2.Wiring instructions: the controller in order to be able to correctly identify the battery voltage, the first wiring to ensure that: 12V battery voltage is higher than 10V 24V battery voltage is higher than 20V 36V battery voltage is higher than 30V 48V battery voltage is higher than 42V, the controller is wired to connect to the battery first, and then connected to the photovoltaic panels, and then connected to the DCload. Specifications: Color: Black Material: ABS Battery Voltage: 12V or 24V or 36V or 48V Charging Current: 100A Max Solar Input(Voc): 15-23V(12V Battery) or 30-46V(24V Battery) or 45-66V(36V Battery) or 60-90V(48V Battery) USB Port: DC5V or 1.5A2USB Operating temperature: -1550 Item Size: 195 x 172 x 68mm or 7.6 x 6.7 x 2.6in Item Weight: 900g or 31.7oz Package Size: 205 x 205 x 70mm or 8.0 x 8.0 x 2.7in Package Weight: 1100g or 38.8oz Packing List: 1 x Controller 1 x User Manual