Product overview This solar charge controller provides selectable load control modes, adjustable night timer for street lights, and precise battery management functions for solar generators and off grid systems. It uses negative MOSFET series switching and includes a working storage function for runtime and error tracking. Key benefits Flexible load control: Choose the most appropriate load mode for lighting, pumps, or other DC loads to match system requirements. Night timer can be reset for street light schedules. Smarter battery charging: Accurate temperature compensation and automatic adjustment of charge and discharge voltages help maintain correct charging profiles and reduce improper charging. Reliable switching: Negative MOSFET series control provides efficient and lowloss switching between panels, battery, and loads. Operational visibility: Builtin working storage records total running time, error timers during operation, and the time required to fully charge the battery for easier maintenance and diagnostics. Compatibility: Designed to work with solar panels, batteries, and solar generators connected in standard configurations where the solar panel positive, battery positive, and controller positive are common. Main features Selectable load control modes for lighting and DC loads Night timer function with reset capability for street lighting applications Accurate temperature compensation for automatic correction of charge and discharge voltages Negative MOSFET series circuit control for efficient switching and protection Working storage functions: total run time, error timer logs, and fullcharge time record Appropriate for systems where solar panels, batteries, and controller positives are connected together Performance and reliability Automatic voltage adjustments respond to temperature changes to maintain consistent charging behavior MOSFET based switching minimizes voltage drop and power loss during operation Operational records enable faster troubleshooting and more informed system maintenance Compatibility Works with common solar panels and battery types used in off grid and backup power systems Suitable for solar generators and standalone systems that connect panel positive, battery positive, and controller positive together Intended for DC load applications such as lighting, small pumps, and charging circuits Practical applications 1) Street lighting: Use the selectable load mode and night timer reset to program lighting schedules and ensure lights operate only during desired hours while logging runtime and error events for maintenance. 2) Solar generator systems: Integrate with solar panels and a battery bank to manage charging and discharging, record fullcharge times, and provide efficient MOSFET switching to reduce losses. 3) Remote off grid installations: Manage DC loads, protect batteries with temperature compensation and automatic voltage correction, and store operational records to simplify remote diagnostics. What it does not require No additional switching hardware is required when the system follows the standard positive connection arrangement between panels, batteries, and the controller. Technical notes The controller uses negative MOSFETs in series to control the circuit and assumes standard wiring where the solar panel positive, battery positive, and charge controller positive are connected together. Temperature compensation and automatic voltage correction operate continuously during charging and discharging cycles. Working storage logs are available for runtime, error timing during operation, and battery fullcharge duration. This controller is intended for users who need selectable load control, accurate charging behavior with temperature compensation, MOSFET based switching, and basic operational recording for easier system management.