Product overview A solar charge controller designed for off grid systems that automatically adjusts charging and discharging behavior to extend battery life and reduce setup errors. Key operational features include temperature compensation charging control algorithm, accurate A D sampling for voltage detection, efficient series PWM charging, automatic system voltage identification for 12V 24V or 48V batteries, self test and electronic protections, and an LCD with button man machine interface and automatic day night detection. Key benefits Prolongs battery life: Temperature compensation charging control algorithm automatically adjusts charging and discharging parameters based on temperature to reduce stress on the battery. Accurate and reliable operation: A D sampling ensures precise voltage measurement and correct system voltage identification for 12V 24V or 48V systems. Simplifies installation and operation: Builtin self test and electronic control functions help prevent common installation errors and reduce the risk of system failures. Clear user interface: LCD display with button man machine interface and automatic day night identification makes system status and settings easy to read and adjust. Efficient charging: Series PWM charging method delivers controlled, efficient charging suitable for off grid solar setups. Features Automatic temperature compensation charging control algorithm for dynamic charging and discharging adjustment. A D sampling for accurate voltage detection and system monitoring. Automatic identification of 12V 24V system voltage and 48V battery working voltage. Series PWM charging method for efficient power delivery to batteries. Automatic control of charging and discharging tailored to solar off grid applications. Comprehensive self test and electronic functions to detect and prevent installation errors and system faults. LCD display with button man machine interface and automatic day night recognition for user friendly operation. Compatibility and performance Designed for off grid solar battery systems using 12V, 24V, or 48V batteries. Optimizes charging strategy based on temperature and measured voltages to improve battery service life and system reliability. Suitable for a range of battery types where temperaturecompensated charging and PWM charging are appropriate. Use scenarios Remote cabin solar system: Automatic voltage identification and temperature compensation maintain battery health during seasonal temperature changes while simplifying monitoring via the LCD interface. Recreational vehicle or boat solar setup: Provides automatic charging control and efficient PWM charging for 12V or 24V battery banks, reducing the need for manual adjustments. Small off grid commercial or telecom sites: Self test and electronic protections help avoid installation mistakes and ensure continuous operation of 48V battery systems. What it solves Eliminates manual tuning of charging parameters by automatically adjusting to temperature and detected system voltage. Reduces the chance of incorrect installation or configuration through comprehensive self test and electronic control functions. Improves operational clarity with a straightforward display and controls, and automatic day night switching for status readability. Technical notes Functions include temperature compensation charging control algorithm, A D voltage sampling, automatic 12V 24V or 48V identification, series PWM charging, automatic charging and discharging control, comprehensive self test and electronic functions, LCD display, button man machine interface, and day night automatic detection. This product is intended for solar off grid battery management where automated temperature compensation, accurate voltage sensing, PWM charging, and a clear user interface are required.