CN3791 MPPT Solar Charge Controller 3.7V Liion Battery Module 5V12V Fast Charging Efficiency

Product: 1 Piece CN3791 MPPT Solar Panel Regulator Controller Module for 1Cell Liion Battery Charging (3.7V nominal, 4.2V full charge) Compatible with 5V 6V 9V 12V solar panels. Replacement for OEM to improve conversion rates. Key benefits Optimizes solar charging: MPPT tracking maximizes power harvested from small solar panels so a single cell battery charges more effectively under varying light conditions. Simple replacement for OEM modules: Direct swap option for systems that require a compact 1cell Liion charging regulator. Reliable charge termination: Designed for 1cell Liion lithium batteries with correct full charge voltage of 4.2V to complete charge cycles consistently. Compact and easy to integrate: Small PCB module fits into limited spaces for retrofit or installations. What this module does Regulates charging of a single Liion cell (3.7V nominal, 4.2V full charge). Implements MPPT regulation to improve conversion efficiency from panel to battery across 5V 6V 9V 12V panel inputs. Acts as a dedicated solar charge controller for smallscale applications where a single lithium cell is used. Compatibility and key attributes Battery type: 1cell Liion lithium battery (3.7V nominal, 4.2V full charge). Solar panel input: suitable for common small panel voltages of 5V 6V 9V 12V. Form factor: compact PCB module for easy installation in DIY and OEM assemblies. Construction: populated PCB with solidstate components for stable performance in small power systems. Function: MPPT solar regulator and charge controller for singlecell lithium battery charging. Typical use scenarios Garden and pathway lighting using a single rechargeable Liion cell and a small solar panel where improved charging under variable light extends runtime. Portable solar chargers and power packs designed around onecell Liion batteries for camping and outdoor use. Small remote sensors, IoT nodes, and hobby projects that need a compact solar charge controller to keep a singlecell battery charged reliably. Why choose this module Provides a compact, direct replacement option for systems that require an MPPTbased singlecell Liion charging solution. Designed to make better use of available solar panel power and maintain proper charge levels for onecell batteries. Practical for retrofits and small designs where space and efficiency are important. Includes 1 piece CN3791 MPPT solar panel regulator controller module for 1cell Liion battery charging.