This 20A solar charge controller efficiently manages solar panels up to 300W, acting as the reliable core of your 12V solar system. It is engineered exclusively for 12V batteries and is not suitable for 24V or 36V packs. correct positive and negative polarity during installation, as no polarity converter is included. A clear LCD screen and LED indicators let you view system status at a glance, including charging, battery level, and operating mode. You can easily select the appropriate charging mode for lead‑acid, , gel, or LiFePO4 batteries. Press the button to temporarily display real‑time charging current Upgraded 20A PWM Charging Performance: Designed for solar panels without built‑in regulators, this upgraded 20A PWM controller offers twice the current of common 10A units for faster, more stable charging. Simple Plug & Play Installation: Upgraded SAE connectors provide a quick, secure, and user‑friendly wiring experience for both beginners and experienced users. Connect the solar panel first, then the battery, strictly following correct polarity to avoid damage., Weight: 0.3747858454 Pounds, Manufacturer: Oewwthy