20A solar charge controller with wide voltage adaptation Wide voltage detection: Automatically detects 12V or 24V systems for a proper firstcharge setup, helping the battery reach full capacity quickly and efficiently. Broad battery compatibility: Engineered for general use with multiple battery types, including leadacid, AGM, GEL, ternary lithium, and lithium iron phosphate (LFP), offering flexible power management across chemistries. Advanced protection system: Builtin safeguards against short circuit, open circuit, reverse connection, and overload conditions to ensure safe, reliable performance in diverse operating environments. Intelligent charging management: Industrialgrade 3stage charging with adjustable parameters accessible via a clear LCD display. The upgraded model maintains constant screen visibility for effortless monitoring. Use scenarios Offgrid home or cabin: Pair with a small solar array to keep 12V/24V battery banks charged reliably, reducing reliance on grid power. Recreational vehicle or boat: Maintain household and starting batteries in RVs, camper trailers, or boats to ensure readiness and extend battery life during travel or onwater use. Remote monitoring or backup power: Use for remote installations or backup systems where versatile battery compatibility and robust protection help ensure continuous operation during unpredictable conditions.