<p><b>Overview</b></p> <p>This solar power management module is designed for 6V~24V solar panel. It can charge the 3.7V Li battery through solar panel or USB connection, and provides 5V/1A regulated output.</p> <p>The module features MPPT (Maximum Power Point Tracking) function and multi protection circuits, therefore, it is able to keep working with high-efficiency, stability, and safety. It is suited for solar powered, low-power IoT, and other environmental protection projects.</p> <p><b>Specifications</b></p> <ul> <li>Solar panel input voltage (SOLAR IN): 6V~24V</li> <li>Micro USB input voltage (USB IN): 5V</li> <li>Pinheader / USB output (USB OUT): 5V 1A</li> <li>Charging cutoff voltage: 4.2V±1％</li> <li>Over discharging protection voltage: 2.9V±1％</li> <li>Solar panel charge efficiency:: ~78%</li> <li>USB charge efficiency:: ~82%</li> <li>3.7V battery boost output efficiency: ~86%</li> <li>Max quiescent current: <2mA</li> <li>Operating temperature: -40℃~85℃</li> <li>Dimension: 65.2mm × 56.2mm × 22.9mm</li> </ul> <p><b>Package Content</b></p> <ol> <li>Solar Power Manager x1</li> </ol> <p><b>Note: 1.the 14500 battery is NOT included.</b></p> <p><b>100% original from Waveshare, technical support is provided ,please contact us !</b></p>