PWM Solar Charge Controller with LCD Display and Dual USB Ports Overview This PWM series solar charge controller provides reliable battery charging and load control for 12V or 24V systems with automatic voltage detection. It is designed as a costeffective option when the solar panel operating voltage is close to the battery voltage. The controller includes a segment LCD display, two USB charging ports, and comprehensive protection features for safe, longterm operation. Key benefits Reliable and cost effective: PWM regulation is a dependable solution when panel and battery voltages are closely matched, reducing system cost without sacrificing performance. Easy monitoring: Segment LCD shows realtime energy statistics and operating status, so system performance and historical data are simple to read. Flexible battery compatibility: Works with Sealed, Gel, and Flooded battery types and supports automatic 12V or 24V system configuration. Safe operation: Multiple builtin protections guard panels, batteries, loads, and the controller itself to reduce failure risk and maintenance needs. USB convenience: Two USB ports provide direct charging for phones and small devices without additional inverters or adapters. Features Series PWM charging mode for stable battery charging. Automatic 12V or 24V system detection and 9V to 32V battery input range. Multiple load control modes to support lighting schedules, timer control, and manual load switching. Segment LCD display with realtime energy statistics and status indicators. Continuous full rated output across the specified operating temperature range. Two USB ports for auxiliary device charging. Compact IP30 enclosure suitable for indoor or protected installations. Common positive grounding configuration. Protection functions Solar panel reverse polarity protection. Battery reverse polarity protection. Battery over voltage protection. Battery over discharge protection. Battery overheating protection. Controller overheating protection. Load short circuit protection. Load overload protection. Technical options Available models and maximum charge currents: VS1024AU 10A, VS2024AU 20A, VS3024AU 30A, VS4524AU 45A, VS6024AU 60A. Nominal system voltage: 12V or 24V auto. Operating temperature range: minus 25 to 55 degrees Celsius. Enclosure rating: IP30. Grounding: common positive. Typical use scenarios Rural electrification and off grid homes: Manage battery charging for lighting, appliances, and device charging in small residential or remote installations. Remote lighting and workstations: Control solarpowered street lighting, site lighting, or solar workstations with timer and load control modes. Small solar power systems: Integrate with sealed, gel, or flooded batteries for cabins, RV auxiliary circuits, or backup power setups where panel voltage is near battery voltage. Installation and selection tips Choose the model whose maximum current equals or exceeds your expected solar charge current. Confirm system voltage selection is 12V or 24V and connect batteries compatible with Sealed, Gel, or Flooded types. Install the controller in a protected, ventilated location consistent with the IP30 enclosure rating and observe common positive grounding. This controller provides a practical, monitored, and protected PWM charging solution for small to mid sized solar systems where simplicity and cost efficiency are priorities.