Solar Charging Controller Board CN3795 MPPT lithium battery panel regulator module for improved solar conversion Key benefits Higher energy harvest: builtin maximum power point tracking (MPPT) optimizes power transfer from the solar panel to the battery, improving conversion compared with non MPPT controllers. Lithium battery optimized: designed for charging lithium battery packs using a power point track MPPT algorithm to manage charging more efficiently and reduce wasted panel output. Simple replacement and retrofit: functions as a regulator module suitable for replacing or upgrading existing CN3795 based charge controllers in small solar setups. Compact and easy to integrate: PCB module form factor fits into DIY and compact installations and can be mounted or incorporated into custom enclosures. What it does Converts solar panel output to a controlled charging current for lithium batteries using MPPT tracking to follow the panel power point. Regulates charging to maintain stable battery charging behavior and improve overall system efficiency. Compatibility and application notes Designed for use with lithium battery packs commonly used in small off grid and portable solar systems. Intended for integration with appropriately rated solar panels and battery packs. Ensure panel voltage and current stay within the module and battery specifications for safe operation. Physical form is a compact PCB module with standard solder pads and mounting holes for straightforward connection and installation. Performance and build MPPT charge regulation improves energy conversion from panel to battery compared with simple PWM regulators. Compact PCB construction with electronic components assembled for typical hobbyist and small system applications. Lightweight and suitable for use where space and weight are limited. Practical use scenarios Portable camping power: pair with a small foldable solar panel and a lithium battery pack to increase charging efficiency for devices and lights while on the move. Garden and outdoor lighting systems: a PWM regulator in a low power solar lighting setup to extend usable nighttime illumination by harvesting more panel energy during the day. DIY off grid projects and small backup power: integrate into hobby solar kits, educational projects, or compact off grid systems to improve battery charging performance. Installation guidance Requires basic electrical skills for soldering or secure wire connections and safe mounting practice. Confirm that solar panel voltage and expected charging current match the module and battery capabilities before use. Use with compatible lithium battery chemistries and appropriate battery management where required. This CN3795 MPPT solar charging controller board is intended as a functional regulator module to improve panel to battery conversion in small lithium battery solar systems and as a direct replacement option for CN3795 based controllers.