{"product_id":"hiletgo-cn3791-mppt-solar-charge-controller-12v-panel-to-1-cell-lipo-charger","title":"HiLetgo CN3791 MPPT Solar Charge Controller – 12V Panel to 1-Cell LiPo Charger","description":"\u003ch2\u003eOverview\u003c\/h2\u003e\n\u003cp\u003eMeet the HiLetgo CN3791 Solar Charge Controller Board, a compact MPPT charger designed to transfer energy from a solar source into a single LiPo cell. Built for DIY projects, education, and hobby electronics, this module blends practical power management with straightforward wiring for reliable, switch-mode charging on the go. While it doesn’t promise specific results for every installation, it provides a structured way to explore how solar input can be converted into a usable LiPo charge.\u003c\/p\u003e\n\n\u003ch3\u003eKey capabilities\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003eMaximum power point tracking (MPPT) helps optimize energy transfer from a solar panel to a single LiPo cell.\u003c\/li\u003e\n  \u003cli\u003eAutomatic recharge behavior when solar input becomes available again, supporting continuous operation.\u003c\/li\u003e\n  \u003cli\u003eBattery overvoltage protection and safe termination to reduce risk during charging cycles.\u003c\/li\u003e\n  \u003cli\u003eClear charge status and end-of-charge indication to monitor progress at a glance.\u003c\/li\u003e\n  \u003cli\u003ePre-installed four 2-pin JST\/PH2.0 connectors for quick, plug-and-play wiring.\u003c\/li\u003e\n  \u003cli\u003eDesigned variants for input voltages of 6V, 9V, and 12V to suit different panel\/battery combinations.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eSpecs at a glance\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003eInput voltage: up to 12V\u003c\/li\u003e\n  \u003cli\u003eOutput voltage: nominal 3.7V, full charge at 4.2V\u003c\/li\u003e\n  \u003cli\u003eMax charging current: 2A\u003c\/li\u003e\n  \u003cli\u003eOperating temperature: -40°C to +85°C\u003c\/li\u003e\n  \u003cli\u003ePhysical size: 45 x 20 x 9.5 mm\u003c\/li\u003e\n  \u003cli\u003eInterface: 2-pin JST or PH2.0\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhat’s included\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e1 x CN3791 Solar Charge Controller Board\u003c\/li\u003e\n  \u003cli\u003e1 x 1-cell LiPo charging module with ready-to-use JST\/PH2.0 connectors\u003c\/li\u003e\n  \u003cli\u003eBasic setup for MPPT operation with a solar panel and LiPo cell\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eSetup and practical use\u003c\/h3\u003e\n\u003cp\u003eTo get started, connect your solar panel to the input side and attach the LiPo battery to the output side. The module is designed to keep the charging process efficient while protecting the battery from voltage spikes. Its compact form makes it suitable for small solar projects, remote sensors, small robotics, and educational demonstrations that explore energy harvesting and battery charging concepts.\u003c\/p\u003e\n\n\u003ch3\u003eUsage tips\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003eChoose an input voltage variant that matches your solar panel rating and expected panel–battery voltage gap.\u003c\/li\u003e\n  \u003cli\u003eUse the status indicators to verify charging activity and end-of-charge signals during field tests.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eOverall, the CN3791 MPPT board offers a practical, space-efficient solution for charging a single LiPo cell from a solar source. It’s a usable option for hobbyists seeking to experiment with solar-powered battery management without heavy investment in larger systems.\u003c\/p\u003e\n\u003csection class=\"product-faq-snippet\"\u003e\u003ch3\u003eFAQ\u003c\/h3\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: What is the CN3791 Solar Charge Controller Board used for?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: It uses MPPT to charge a single LiPo cell from a solar panel, with status indicators and protective features.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: What are the input and output specs?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Input up to 12V, output to 4.2V LiPo, max charging current 2A, operating -40°C to 85°C.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/section\u003e","brand":"HiLetgo","offers":[{"title":"Default Title","offer_id":45822619517114,"sku":"B082W6MDKQ","price":36.24,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0753\/3536\/8890\/files\/hiletgo-cn3791-solar-charge-board.jpg?v=1777803892","url":"https:\/\/gardencanada.ca\/products\/hiletgo-cn3791-mppt-solar-charge-controller-12v-panel-to-1-cell-lipo-charger","provider":"Garden Canada","version":"1.0","type":"link"}