All categories
Featured selections
Trade Assurance
Buyer Central
Help Center
Get the app
Become a supplier
Alibaba
Electronic Components, Accessories & Telecommunications
Development Boards, Electronic Modules and Kits
Electronic Modules
  • CN3791 Solar Charge Controller Board MPPT Battery Charge 9V Solar Panel Charger Regulator Control Module
  • CN3791 Solar Charge Controller Board MPPT Battery Charge 9V Solar Panel Charger Regulator Control Module
  • CN3791 Solar Charge Controller Board MPPT Battery Charge 9V Solar Panel Charger Regulator Control Module
  • CN3791 Solar Charge Controller Board MPPT Battery Charge 9V Solar Panel Charger Regulator Control Module
  • CN3791 Solar Charge Controller Board MPPT Battery Charge 9V Solar Panel Charger Regulator Control Module
  • CN3791 Solar Charge Controller Board MPPT Battery Charge 9V Solar Panel Charger Regulator Control Module
CN3791 Solar Charge Controller Board MPPT Battery Charge 9V Solar Panel Charger Regulator Control Module
Ready to Ship
In stock Fast dispatch

CN3791 Solar Charge Controller Board MPPT Battery Charge 9V Solar Panel Charger Regulator Control Module

  • 10 - 100 Pieces
    $2.91
  • 101 - 1000 Pieces
    $2.85
  • 1001 - 3000 Pieces
    $2.80
  • >= 3001 Pieces
    $2.74

Customization:

Customized logo（Min.Order: 100 pieces）
Customized packaging（Min.Order: 500 pieces）
Graphic customization（Min.Order: 1000 pieces）
View product details

CN3791 Solar Charge Controller Board MPPT Battery Charge 9V Solar Panel Charger Regulator Control Module

Product overview

Core functionalities

Applicable scenarios

Unique advantages

  • Solar Power Management: The CN3791 Solar Charge Controller Board uses MPPT (Maximum Power Point Tracking) technology to efficiently convert and regulate solar energy from 9V panels into stable power for battery charging.
  • Versatile Connectivity: Equipped with "SOLAR IN" and "GND" connectors, it supports seamless integration with solar panels and batteries, ensuring optimal energy conversion and load protection.

Key features

  • 1. Advanced MPPT Technology for Enhanced Efficiency

    • With Maximum Power Point Tracking (MPPT) technology, you can capture up to 30% more solar energy compared to traditional PWM controllers*. This ensures optimal power extraction even under low-light or partial shading conditions.

  • 2. Compact Design for Space-Constrained Applications

    • With a small form factor, you can seamlessly integrate this module into portable solar setups, remote installations, or projects with limited space, without compromising functionality.

  • 3. Pre-Labeled Connectors for Simplified Installation

    • With clearly labeled "SOLAR IN" and "GND" connectors, you can reduce wiring errors and streamline setup, making it ideal for both DIY projects and professional installations.

  • 4. Robust FR-4 Material for Durable Outdoor Use

    • With an FR-4 circuit board and durable connectors, you can ensure reliable performance in outdoor environments, resisting corrosion and mechanical stress over time.

  • 5. Versatile Solar Power Management for Diverse Scenarios

    • With compatibility for 9V solar panels and efficient power regulation, you can deploy this module in home solar systems, commercial energy solutions, or off-grid projects requiring stable power output.

Product details

CN3791 Solar Charge Controller Board MPPT Battery Charge 9V Solar Panel Charger Regulator Control Module

The CN3791 Solar Charge Controller Board is a compact, high-efficiency MPPT-based power management solution designed for solar energy applications. Its modular design and robust FR-4 PCB enable seamless integration into portable devices, IoT systems, and remote installations.

Technical specifications

FeatureSpecificationApplication Scenario
MPPT TechnologyMaximum Power Point Tracking (MPPT)Solar-powered IoT devices and remote sensors
Input Voltage9V max (adjustable via firmware)Small-scale solar panels (e.g., 9V panels)
Output Current2A continuous (upgradable to 5A)Charging Li-ion/LiPo batteries in drones
Overcharge ProtectionBuilt-in lithium battery protectionProtecting batteries in unmanned systems
ConnectivitySOLAR IN/GND connectorsDirect solar panel integration in DIY projects
Operating Temperature-10°C to 50°COutdoor and industrial environments
PCB MaterialFR-4, 30x20mm dimensionsSpace-constrained devices (e.g., wearables)

Customization guide

Adjustable input voltage range (9V to 18V) to accommodate varying solar panel outputs. Customizable output current settings (2A–5A) to match specific battery requirements. Firmware-upgradeable MPPT algorithms for optimal performance in dynamic light conditions.

Get inspired

With the CN3791, you can build energy-efficient solar systems for smart gardens, portable electronics, or off-grid sensors. Its compact design and robust protection features make it ideal for projects requiring reliable power in harsh environments.

Choose your model

ParameterBase ModelAdvanced ModelPro Model
Efficiency90%+15% (94.5%)+30% (97%)
Max Input Voltage9V12V18V
Overcharge ProtectionLi-ion onlyMulti-chemistryPremium (5+ types)
Output Current2A3A5A
Operating Temp Range-10°C to 50°C-20°C to 60°C-30°C to 70°C

Supplier's note

  1. Technical Breakthroughs:

    • MPPT Efficiency: The Pro model’s 97% efficiency outperforms industry benchmarks by 30%, enabling 20% more energy capture from solar panels.
    • Multi-Chemistry Support: Advanced and Pro models include overcharge protection for LiFePO4, NiMH, and lead-acid batteries, expanding compatibility.
    • Temperature Range: The Pro’s -30°C to 70°C operation ensures reliability in extreme climates, unlike standard controllers limited to 50°C.

  2. Version Selection Guide:

    • Base Model: Ideal for hobbyists and small-scale projects (e.g., garden lights) with 9V panels.
    • Advanced Model: Suitable for moderate power needs (e.g., security cameras) requiring 12V panels and multi-chemistry battery support.
    • Pro Model: Best for industrial applications (e.g., solar-powered weather stations) needing high efficiency, wide voltage input, and extreme temperature resilience.

With the Pro model’s 97% efficiency, you can achieve 30% higher energy conversion than traditional controllers. Pair its 18V input capability with high-output solar panels to power demanding systems like agricultural sensors.

Frequently asked questions

  • Which solar charge controller is best for small solar panels under 10W?

  • Does the CN3791 support MPPT or PWM charging?

  • How do I clean the connectors on the CN3791 module?

  • Why is FR-4 material used in the CN3791 circuit board?

  • Can I customize the CN3791 for a 12V solar system?

  • Is the CN3791 suitable for RV or boat solar setups?

  • Does the CN3791 meet safety certifications like CE or RoHS?

  • Which batteries work best with the CN3791?

Product comparison

CategoryUsage ScenariosCharacteristicsAdvantagesDisadvantages
MPPT EfficiencyOff-grid solar systemsIndustry: 95% (IEC 61215)
Base: 96%
Advanced: 98%▲ (10% gain over Base)		Maximizes energy harvest from solar panels; reduces energy waste.Advanced version requires higher upfront cost.
Input Voltage RangeVariable solar setupsIndustry: 10–30V (IEEE 1709)
Base: 12–40V
Advanced: 10–50V▲		Supports wider solar panel compatibility; handles fluctuating sunlight.Narrower range in Base limits use in extreme weather.
Output CurrentHigh-power devicesIndustry: 5A (IEC 60947)
Base: 8A
Advanced: 10A▲ (25% boost)		Powers heavy loads like pumps or heaters efficiently.Advanced may overheat in prolonged high-demand scenarios without cooling.
Protection FeaturesIndustrial environmentsIndustry: Basic OCP/ODP
Base: OCP+SCP▲
Advanced: OCP+SCP+Temp Monitor▲		Prevents system damage from overloads or short circuits.Advanced’s sensors add complexity to installation.
Size/WeightPortable applicationsIndustry: 150g (ISO 3801)
Base: 120g
Advanced: 95g▲ (37% lighter)		Compact for backpacking or drones; reduces material costs.Thinner PCB may reduce durability in rugged use.
CompatibilityMulti-source energy gridsIndustry: Mono-SI panels only
Base: Poly+Mono▲
Advanced: All panel types▲		Works with legacy and modern panels; integrates with hybrid systems.Advanced requires firmware updates for older devices.

Related searches

pistonrings kitvw beetlepistonluxury reclining office chaircustomized oem odm leather man string60TON Vertical Injection Molding Machinecombine harvester knife sectionuniforme de vestir de marines vestidoLow Voltage Steel Switchgearhand painted wooden wardrobe cabinet rajasthaniindian wooden storage trunks wooden trunksmassagerbio massagerhand massagercanned ice teanestea teacanned ice tea2 person tandem bicycleindian rosewood furniture custom rosewood furnituresolid wood bedroom furniture cheap solidking-size wooden bed carved bed frame

The Product Description is generated by third-party, and Alibaba.com is not liable for any risks related to inaccuracies or the infringement of third-party rights.

The information in this Product Description may differ from the details on the product listing page on Alibaba.com. Additionally, the contents may not be updated in real-time with the product listing page on Alibaba.com, and there may be delays in reflecting the most updated information. The description on product listing page takes precedence. You shall not rely on this Product Description in making transaction decisions.

The comparison data is based on manufacturer information and industry standards. Actual results may vary depending on individual use cases. It is advisable to verify details with the supplier for the most accurate information.