Solar panel controller and inverter with LCD display for easy control of charge and discharge. Designed for use with photovoltaic panels. Supports automatic battery type recognition and includes dual USB ports for convenient device charging. Install on a flat, ventilated surface. Key benefits Simple monitoring and control: built in LCD display makes it easy to view and adjust charging and discharging settings. Broad battery compatibility: automatically identifies 12v or 24v lead acid batteries (b1) and supports lithium ion batteries (b2) and lithium iron phosphate batteries LiFePO4 (b3). Intended for photovoltaic systems: specifically designed to work with solar PV panels to manage power flow and battery charging. Convenient device charging: dual USB ports allow direct charging of phones, tablets, and small electronics. Improved conversion performance: designed to help improve conversion efficiency between the solar source and battery storage. Reliable installation guidance: mount on a flat, ventilated surface to maintain performance and longevity. Core functions and compatibility Charge and discharge control with LCD readout for status, settings, and basic diagnostics. Automatic 12v and 24v battery detection for easy setup. Support for multiple battery chemistries: lead acid (b1), lithium ion (b2), and lithium iron phosphate (b3). Dual USB output for charging portable devices from the controller output. For use only with photovoltaic panels; not intended for other power sources. Practical use scenarios Off grid cabin or shed: regulate solar panel input to charge a battery bank and power lights, small appliances, and mobile devices via the USB ports. Mobile applications such as RV or boat: manage charging for onboard 12v or 24v battery systems while providing convenient USB charging for electronics. Backup power setup with portable generator integration: use the controller to manage solar charging and improve conversion when supplementing a portable generator, while keeping devices charged through the dual USB ports. Installation and operational notes Use only with photovoltaic panels. Do not connect non PV power sources to the controller input. Install the unit on a flat, ventilated surface to allow heat dissipation and reliable operation. Confirm battery chemistry setting when required and verify system voltage during initial setup. What it delivers Clear control and monitoring via the LCD display. Flexible battery support with automatic voltage recognition. Practical USB charging for everyday devices. Intended compatibility and installation guidance for reliable solar charging performance.