20A Bluetooth Charge Controller Solar 12 V: Y&H V/24 V Charger Panel Intelligent PWMs with USB Port PV: 50 for Lead Acid

Intelligent Bluetooth solar charge controller: This 20A PWM Bluetooth solar controller allows wireless, intelligent monitoring via the LiMu Solar App (default password: 666666). It allows you to remotely configure six charging modes (light control, timer, manual) and five battery types (lithium, gel, lead-acid), making it much more convenient than conventional controllers. Precise charging management: It uses intelligent three-stage PWM charging technology and automatically detects 12V/24V systems. The maximum solar voltage is 50V with a charging voltage accuracy of ±0.5% (lithium 14.2V/28.4V, lead-acid 14.6V/29.2V). It also has temperature compensation (-4mV/°C/2V) and charging efficiency of up to 98%. 【Industrial Grade Safety Protection】Seven protection levels: solar panel reverse polarity, battery reverse polarity, over-voltage (29.6V shutdown), undervoltage (11.2V shutdown), overload (160% load for 5 seconds shutdown), short circuit and over temperature (70°C shutdown). Dust and moisture resistant to IP30. Dual output configuration: 20A main load output (supports segmented time control) + 5V/1.5A USB port (for charging smartphones). An intelligent chip automatically controls the solar panel and battery system, making it suitable for off-grid lighting, RV power supply and other applications. Easy installation: Compact dimensions (115 x 95 x 30 mm) with three-colour LED status indicator. Standard wiring order: battery → solar panel → load, allows quick start-up in 3 minutes.