Feature: 1. MPPT POWER POINT TRACKING: The power management module supports MPPT function, greatly improving solar energy conversion efficiency for optimal performance. 2. VERSATILE CHARGING: Compatible with various charging methods such as solar panels and TYPE C power adapters, the power manager offers flexibility and convenience for different power sources. 3. WIDE VOLTAGE RANGE: Suitable for 6V‑24V solar panels, the power management module can be connected via DC 002 power socket or terminal block for easy installation. 4. INTUITIVE INDICATOR LIGHTS: Equipped with multiple status indicator lights, allowing users to easily monitor the status of solar panels and batteries at a glance. 5. COMPREHENSIVE SAFETY: Integrated with safety circuits including overcharge, over discharge, over temperature, and over current safety, ensuring stable and safe operation. Specification: Item Type: Solar Power Manager Material: PCB Input Voltage: 6V-24V Charging Method: Solar Panel, Power Adapter, USB Battery Specification: 3 x 18650 (not included) USB Input Voltage: 5V (TYPE C interface, support for PD fast charging protocol) 5V Output: 5V 3A (terminal block, TYPE C) Charging Cut Off Voltage: 4.2V ± 1% Over Discharge Voltage: 3.0V ± 1% Solar Panel Charging Efficiency: Approx. 78% USB Charging Efficiency: Approx. 93% Battery Boost Output Efficiency: Approx. 90% . Package List: 1 x Solar Power Manager Module 1 x Power Box