5A Solar Panel Controller — StepDown CC/CV Charging Module with LED Display A compact, easytouse solar charging controller that converts a highervoltage solarpanel input into a regulated charging output using stepdown (buck) conversion with constantcurrent (CC) and constantvoltage (CV) charging profiles. Designed for small solar and battery projects that require reliable, controlled charging up to 5A with clear visual feedback from an integrated LED display. Key benefits — why you need this Provides regulated charging from a solar panel source using CC/CV control to protect batteries from over or undercharging conditions inherent in raw panel output. Stepdown (buck) topology efficiently reduces panel voltage to the appropriate charging voltage without wasting excess energy as heat. Onboard LED display gives immediate, easytoread feedback on charging status and basic operating parameters so you can monitor performance at a glance. Compact module format simplifies integration into portable systems, hobby projects, and small offgrid setups where a dedicated charge controller would be too large or costly. Main features Maximum charging current: 5A Charging method: Stepdown (buck) converter with CC/CV regulation Status interface: Integrated LED display for charge monitoring Form factor: Module designed for straightforward installation in small systems Key attributes Functionality: Converts solarpanel input to a controlled CC/CV charge output; suitable for charging battery packs or supplying a regulated output when the panel voltage exceeds the required device voltage. Compatibility: Intended for use with solar panels and batterybased systems where the solar input and desired charging output fall within the module's operating range and the 5A current limit. Size: Compact module form factor for easy mounting and integration into enclosures or portable assemblies. Material and build: Electronic module construction suitable for wiring into small electrical systems; designed for practical, applicationlevel use. Performance: Provides a steady constantcurrent then constantvoltage charging profile governed by the stepdown converter, with a maximum of 5A charging current and visual monitoring via LED display. Typical applications / use cases Portable solar chargers: Build a compact charging station for small battery packs or devices using a panel and this stepdown CC/CV module to provide controlled charging up to 5A. Offgrid sensors and equipment: Power or maintain batteries for remote sensors, lighting, or instrumentation where a small, efficient charging module and a readable LED display are beneficial. Hobby and DIY projects: Add regulated solar charging capability to batterypowered prototypes, RC vehicle chargers, or small energyharvesting projects that require precise CC/CV charging behavior. Simple integration and operation Wiring is straightforward: connect the solar panel input to the module, and connect the battery/load to the output terminals. The module regulates charging using CC/CV behavior up to the 5A limit. LED display provides visual confirmation of charging activity and basic operating status during use. Notes and selection guidance Ensure the solar panel voltage and battery voltage are compatible with the module's operating range and keep the charging current below the 5A maximum. This module provides CC/CV regulated charging and LED status indication; verify additional systemlevel protections (fusing, isolation, or batteryspecific safeguards) as required for your application. What's included 5A StepDown CC/CV Solar Charging Module with integrated LED display (module only; wiring and external components not shown). For small solartobattery projects requiring efficient buck conversion, controlled CC/CV charging up to 5A, and simple visual monitoring, this stepdown solar panel controller module offers a compact, practical solution.