Bullet Points: 1. Always keep the battery at charging voltage 2. Prevent overcharging of the battery 3. Prevent excessive battery discharge 4. Prevent the battery from charging backwards on the solar panel at night 5. Battery reverse connection protection 6. Reverse connection protection of solar panels 7. When the battery voltage is low, the controller will automatically reduce the system load. If the battery voltage returns to normal, restart charging 8. The controller automatically compensates for temperature, and the charging voltage is a function of environmental temperature changes Features of Type A: 1. Accurate monitoring The solar controller adopts an industrial grade main chip, with 16AD sampling accuracy, temperature, and accurate real-time discharge current display, making the power generation situation clear at a glance 2. Fast charging speed MPPT solar controller has high charging efficiency, automatic focusing MPPT tracking and loading, high charging efficiency, uninterrupted detection and charging, bidirectional focusing and tracking 3. Fast charging speed MPPT solar controller has high charging efficiency, automatic focusing MPPT tracking and loading, high charging efficiency, uninterrupted detection and charging, bidirectional focusing and tracking 4. Multi intelligent protection The charging controller has multiple intelligent protection functions, including built-in overcurrent protection, short circuit protection, reverse connection protection, open circuit protection, and automatic recovery 5. High tracking efficiency The solar fast charging controller adopts innovative MPPT technology, with a tracking efficiency of up to 99%. Compared with ordinary controllers, the efficiency can be improved by 10% -30% Features of Type B: * MPPT+PWM coexistence function: The solar charge controller will automatically adapt to the charging setting mode (MPPT/PWM), and automatically adjust the charging according to the battery type. * Tips: For example, lithium batteries should be charged by MPPT, and those that can charge 12V acid batteries should be charged by PWM. * Liquid crystal display: The solar charge controller is equipped with a large-screen liquid crystal display, charge and discharge current display, cumulative power supply and discharge request, temperature display, light control + delay control; charge and discharge parameters can be adjusted, with power-off memory and other functions. * Dual USB ports: The solar charge controller is equipped with two USB ports with a maximum current of 2.5A, and supports charging for iPhones at the same time. * Multifunctional: The function of the solar charge controller is equipped with all necessary protection devices, and the system control parameters are adjustable, which is easy to set up and operate. Built-in short circuit protection, open circuit protection, reverse polarity protection and overload protection. Reverse current protection, low heat generation, self-healing function. Specifications: Name: LCD Solar Controller Main color: black Main material: ABS Voltage: DC 12V / 24V Rated current: 10-100A (optional) Maximum photovoltaic voltage: 50V Display: LCD screen 12.0 volt lead acid battery corresponding: The float voltage is set to: 13.6 The recovery discharge voltage is set to: 12.6 The discharge cut-off voltage is set to: 10.7 12.8 volt lithium iron phosphate battery corresponding: The float voltage is set to: 14.6 The recovery discharge voltage is set to: 13.6 The discharge cut-off voltage is set to: 11.0 11.1 volt lithium battery corresponding: The float voltage is set to: 12.6 The recovery discharge voltage is set to: 11.6 The discharge cut-off voltage is set to: 9.6 Packing List: 1 x Solar Panels Battery Charge Controller 1 x User Manual _x000D_