Auto voltage detection: This 12V/24V solar charge controller automatically detects battery voltage without manual setting, compatible with lead acid batteries (OPE, GEL), ternary lithium battery, and lithium iron phosphate battery types for versatile off grid solar systems. 30A current capacity: Delivers 30A charging current and 10A discharge current with fully 3 stage charge management, supporting a maximum 23V solar input for 12V batteries and 46V for 24V batteries, ensuring efficient power conversion for caravans and boats. Large LCD display control: Built in industrial mini controller with a large LCD display showing all adjustable parameters, enabling real time monitoring of battery status, charging current, and system performance for complete solar power management. Multiple safety protection: Integrated short circuit, open circuit, reverse polarity, and overload protection systems prevent damage to batteries and connected devices, operating reliably in temperatures from 35°C to 60°C for outdoor installations. Use scenarios: Off grid RV or caravan: keeps the auxiliary house battery charged and powers onboard lighting and small appliances while parked or on the road. Boat or marine setup: supports charging from solar panels to sustain navigation electronics, lights, and refrigeration during extended outings. Remote cabin or off grid outpost: powers 12V/24V loads such as cameras, sensors, and lighting where grid access is unavailable.