From Makers Electronics's description

CN3791 MPPT Solar Charger Module 6V HW-032A The CN3791 MPPT Solar Charger Module 6V (HW-032A) is an intelligent solar battery charging board built around the CN3791 charging controller IC. It is specifically designed for charging a single-cell 3.7V Li-ion or Li-Po battery from a 6V nominal solar panel, utilizing Maximum Power Point Tracking (MPPT) technology to maximize energy harvested from the solar panel under varying sunlight conditions. The module uses a constant-current/constant-voltage (CC/CV) charging algorithm to ensure safe and efficient battery charging. The HW-032A module is ideal for off-grid electronics, solar-powered IoT devices, weather stations, portable battery systems, and renewable energy projects. It includes battery protection features such as automatic recharge, soft start, battery activation for deeply discharged cells, and charging status indicators. With multiple input/output connection options, it can be easily integrated into custom solar-powered designs. Features: MPPT (Maximum Power Point Tracking) technology. Designed for 6V nominal solar panels. Complete CC/CV lithium battery charging algorithm. Supports single-cell Li-ion and Li-Po batteries. High charging efficiency. Automatic battery recharge. Battery activation for deeply discharged batteries. Soft-start charging. Built-in charging status indicators. Battery over-voltage protection. Compact PCB for embedded applications. Easy connection using JST connectors and solder pads. Specifications: Parameter Value Controller IC CN3791 Module Model HW-032A Solar Panel Input 6V Nominal (5V–9V Recommended) Battery Type 1S Li-ion / Li-Po Battery Voltage 3.7V Nominal Charge Termination Voltage 4.2V ±1% Maximum Charging Current Up to 2A Charging Method CC/CV MPPT Supported PWM Switching Frequency 300kHz Operating Temperature -40°C to +85°C Status Indicators Charging LED / Full Charge LED Pinout: Applications: Solar-powered IoT devices. Remote sensor nodes. Weather stations. Portable solar chargers. DIY solar battery systems. Outdoor monitoring equipment. Garden lighting. Renewable energy projects. Emergency backup power systems. Educational solar energy projects. Package Includes: 1x CN3791 MPPT Solar Charger Module 6V HW-032A.

From Makers Electronics's description

CN3791 MPPT Solar Charger Module 9V HW-032B The CN-3791 MPPT Solar Charger Module 9V HW-032B is a high-efficiency solar charging module designed for charging a single 3.7V lithium-ion or lithium-polymer battery directly from a 9V solar panel. Based on the CN3791 switching charger IC, the module utilizes Maximum Power Point Tracking (MPPT) technology to maximize the energy harvested from photovoltaic panels, improving charging efficiency under varying sunlight conditions. Features: Based on the CN3791 MPPT solar charger IC. Designed for 9V solar panel input. Charges a single 3.7V Li-ion or LiPo battery. Maximum Power Point Tracking (MPPT) for improved solar energy utilization. Constant Current (CC) and Constant Voltage (CV) charging. Charging current up to 2A (depending on solar panel capability and thermal conditions). Specifications: Parameter Value Charging IC CN3791. Module Model HW-032B. Charging Method MPPT, CC/CV. Solar Panel Input 9VDC Nominal. Battery Type 1-Cell Li-ion/LiPo. Battery Voltage 3.7V Nominal, 4.2V Full Charge. Maximum Charge Current Up to2A. Switching Frequency 300kHz. Charging Indicators CH (Red), OK (Blue). Auto Recharge Supported. Soft Start Supported. Operating Temperature -40°C to +85°C. Solar Connector PH2.0-2P. Battery Connector PH2.0-2P. PCB Dimensions 44.8×20mm. Configuration: Applications: Solar-powered IoT devices. Portable solar charging systems. 18650 battery charging. LiPo battery charging. Remote monitoring stations. Environmental sensor nodes. DIY solar projects. Off-grid electronic systems. Educational renewable energy projects. Battery-powered embedded systems. Package Include: 1x CN3791 MPPT Solar Charger Module 9V HW-032B. 2x Jst Connector

From Makers Electronics's description

CN3791 MPPT Solar Charger Module 12V CN3791 12V MPPT Solar LiPo Charger Module is a maximum power point tracking (MPPT) solar charger for single-cell LiPo batteries. This MPPT solar charger provides you with the ability to get the most possible power out of your solar panel or other photovoltaic device and into a rechargeable LiPo battery. Set-up is easy as well, just plug your solar panel into one side of the solar charger and your battery into the other and you are good to start charging! Solar maximum power point tracking (MPPT) is to ensure that the light intensity change, photovoltaic cells output maximum power, to make full use of solar energy. In general, need to use a switch-mode DC-DC converter to realize the MPPT function, keep the output voltage, and charging current product maximize (output). The output of the Solar Charger is intended to charge a single polymer lithium-ion cell. The load should be connected in parallel with the battery. Each Solar Charger comes equipped with a CN3791 power tracking battery charging circuit and pre-installed four 2-pin JST/PH2.0 connectors. Features: Maximum Power Point Tracking (MPPT) Solar Charger Module 2-Pin JST Connectors for Solar Panel and Battery Connection PWM Switching Frequency of 300KHz Maximum Charging Current of 2A Specifications: Parameter Value Charging IC CN3791. Charging Method MPPT, CC/CV. Solar Panel Input 12VDC Nominal. Battery Type 1-Cell Li-ion/LiPo. Battery Voltage 3.7V Nominal, 4.2V Full Charge. Maximum Charge Current Up to2A. Switching Frequency 300kHz. Charging Indicators CH (Red), OK (Blue). Auto Recharge Supported. Soft Start Supported. Operating Temperature -40°C to +85°C. Solar Connector PH2.0-2P. Battery Connector PH2.0-2P. Configuration: Package Includes: 1 x CN3791 12V MPPT Solar Charger Module 1 x Pair of wires with 2-pin JST connector on both sides

From Micro Ohm's description

CN3791 12V MPPT Solar Charger Module A compact MPPT solar charging board for a single 3.7V Li-ion/LiPo cell. Now fully documented with indicator behavior, switching frequency, thermal range, and charge algorithm details. Size 44.8 × 20 mm , dual PH2.0-2P connectors both sides, and rear pads to select 5V/6V/9V/12V panel presets. [Updated] Includes LED status (CH/OK), ~300 kHz PWM switching , auto-recharge & soft-start , and –40 to +85 °C operating range . لوحة شحن شمسي MPPT لخلية ليثيوم 3.7 فولت واحدة، مع توثيق كامل لسلوك لمبات البيان، وتردد التبديل، ونطاق الحرارة، وتفاصيل خوارزمية الشحن. الأبعاد 44.8 × 20 مم ، وموصلات PH2.0-2P مزدوجة على الجهتين، ووسائد خلفية لاختيار جهد اللوح 5/6/9/12 فولت . [تحديث] تتضمن حالة اللمبات (CH/OK)، وتبديل ~300 كيلوهرتز ، و إعادة شحن تلقائية وبداية لينة ، ونطاق تشغيل –40 إلى +85 °م . What makes it great / لماذا هذه اللوحة مميزة ✅ True MPPT tracking to harvest more power vs. linear chargers. ✅ Rear solder-select presets : 5V / 6V / 9V / 12V to match many mini-panels. ✅ Up to ~2 A charge with R050 sense (panel & thermal permitting). [Updated] Rated in file. ✅ CC/CV algorithm with 4.2 V constant-voltage target for Li-ion cells. [Updated] 4.2 V CV set-point noted. ✅ Auto-recharge & soft-start for safe recovery and smooth engagement. [Updated] ✅ ~300 kHz PWM switching for compact magnetics and low ripple. [Updated] ✅ Wide ambient range –40 °C…+85 °C for outdoor nodes. [Updated] ✅ MPPT حقيقي لإخراج طاقة أعلى مقارنة بالشواحن الخطية. ✅ اختيار جهد اللوح من الخلف : 5/6/9/12 فولت لملاءمة الألواح الصغيرة. ✅ تيار شحن حتى ~2 أمبير مع R050 (وفق قدرة اللوح وإدارة الحرارة). [تحديث] قيمة مذكورة في الملف. ✅ خوارزمية CC/CV بجهد تعويم ثابت 4.2 فولت لليثيوم. [تحديث] ✅ إعادة شحن تلقائية وبداية لينة لأمان أفضل. [تحديث] ✅ تبديل ~300 كيلوهرتز لمكونات صغيرة وتموّج منخفض. [تحديث] ✅ نطاق بيئي واسع –40…+85°م لعُقد خارجية. [تحديث] Indicators & UX / المؤشرات وتجربة الاستخدام CH (Red) LED : ON during charging; blinks when approaching full. OK (Blue) LED : OFF while charging; ON when fully charged . Auto-recharge : if cell voltage droops after full, charging restarts automatically. Soft-start : reduces inrush when connecting panel or battery. لمبة CH الحمراء : مضيئة أثناء الشحن؛ وتومض عند الاقتراب من الامتلاء. لمبة OK الزرقاء : تضيء عند اكتمال الشحن وتكون مطفأة أثناء الشحن. إعادة شحن تلقائية : يعاود الشحن تلقائيًا إذا انخفض جهد الخلية بعد الامتلاء. بدء لَيّن (Soft-start) : يُقلل اندفاع التيار عند توصيل اللوح أو البطارية. Connectors & layout / التوصيلات والتخطيط Left: SOLAR IN — two PH2.0-2P sockets in parallel ( + / − ). Right: BAT — two PH2.0-2P sockets ( BAT+ / BAT− ) for the single 3.7 V Li-ion/LiPo cell and BAT output . Bottom through-holes : VIN, GND, GND, BAT for soldered wiring. Rear pads : bridge one preset ( 5/6/9/12 V ) to match panel (see photo). يسار اللوحة: SOLAR IN — مقبسان PH2.0-2P متوازيان ( + / − ). يمين اللوحة: BAT — مقبسان PH2.0-2P ( BAT+ / BAT− ) لخلية ليثيوم 3.7 فولت والخروج. ثقوب سفلية : VIN, GND, GND, BAT للحام الأسلاك. وسائد خلفية : اجسر إعدادًا واحدًا ( 5/6/9/12 فولت ) بما يطابق اللوح. Electrical behavior / السلوك الكهربائي Input (panel) nominal: selectable 5–12 V presets; file describes “12 V input” correspondence to 12 V-class panels. Battery target: 4.2 V ± (typ.) constant-voltage for Li-ion full charge. Charge stages: MPPT tracking → Constant-Current (set by Rsense) → Constant-Voltage → Auto-recharge . Switching frequency: ~300 kHz PWM . Operating ambient: –40 °C to +85 °C . دخل اللوح الاسمي: اختيار 5–12 فولت ؛ يوضح الملف توافق دخل 12 فولت مع ألواح فئة 12 فولت. هدف البطارية: 4.2 فولت (تقريبًا) كجهد ثابت لشحن الليثيوم الكامل. مراحل الشحن: تتبّع MPPT → تيار ثابت (يحدده مقاوم القياس) → جهد ثابت → إعادة شحن تلقائية . تردد التبديل: ~300 كيلوهرتز . نطاق التشغيل البيئي: –40 إلى +85°م . Quick wiring / التوصيل السريع Bridge rear preset ( 5/6/9/12 V ) to match panel. Connect SOLAR IN +/− (check polarity). Connect BAT +/− to one protected Li-ion/LiPo cell (3.7 V nominal). During first run, monitor charge current and board temperature . اجسر إعداد الخلف ( 5/6/9/12 فولت ) بما يوافق اللوح. صِل SOLAR IN +/− (مع القطبية الصحيحة). صِل BAT +/− إلى خلية واحدة ليثيوم (3.7 فولت اسمي) ويفضل بحماية. راقب تيار الشحن و حرارة اللوحة في التشغيل الأول. Dimensions & footprint / الأبعاد وبصمة التركيب 44.8 × 20 mm PCB (per image). PH2.0 connector pitch. Keep airflow around the inductor and Schottky diode . لوحة 44.8 × 20 مم ، وخطوة موصل PH2.0 ، مع تهوية حول الملف والمقوّم. Specifications / المواصفات (consolidated) Item Detail Controller CN3791 MPPT Li-ion charger Battery 1-cell 3.7 V Li-ion/LiPo (4.2 V full) Charge Current ~2 A max (R050 sense) [Updated] Switching Freq. ~300 kHz [Updated] Panel Presets 5V / 6V / 9V / 12V (rear solder select) Indicators CH (red) charging ON / blinking near full; OK (blue) ON when full [Updated] Auto Functions Auto-recharge & soft-start [Updated] Operating Temp –40…+85 °C [Updated] I/O 2×PH2.0-2P SOLAR IN, 2×PH2.0-2P BAT, VIN/GND/GND/BAT through-holes Size 44.8 × 20 mm Notes / ملاحظات: Use a protected cell or external BMS . Not for multi-cell packs. Ensure panel Voc and current capability match the selected preset and thermal limits. Hidden SEO : CN3791 MPPT board, 3.7V LiPo solar charger, mini MPPT charger module. : شاحن شمسي MPPT لليثيوم، وحدة CN3791. : PH2.0 connector, R050 sense, CC/CV, panel preset, VIN GND BAT. : CN3065/CN3085 linear boards (non-MPPT). : “CN3791 MPPT 12V module”, “Li-ion solar charger 3.7V MPPT”. CN3791, CN-3791, MPPT solar charger, MPPT charger module, 12V panel charger, Li-ion/LiPo single cell, 3.7V lithium charger, 4.2V CC/CV, 2A charge current, 300kHz switching, auto-recharge, soft-start, CH LED, OK LED, PH2.0 connector, solar IN, BAT OUT, 5V panel preset, 6V panel preset, 9V panel preset, 12V panel preset, DIY solar, IoT node power, 18650 solar charger, garden light charger, micro solar system, off-grid sensor, compact MPPT board, lithium protection recommended, high efficiency charger, سي ان 3791, CN3791 شاحن شمسي, وحدة شحن MPPT, كنترولر شحن شمسي, شاحن خلية ليثيوم 3.7 فولت, شاحن 18650 شمسي, خوارزمية CC/CV, تيار شحن 2 أمبير, تردد 300 كيلوهرتز, إعادة شحن تلقائية, بدء ليّن, لمبة CH, لمبة OK, موصل PH2.0, دخل لوح شمسي, خرج بطارية, إعداد 5 فولت, إعداد 6 فولت, إعداد 9 فولت, إعداد 12 فولت, مشروع طاقة شمسية صغير, إنترنت الأشياء, إنارة حدائق, نظام مستقل صغير, لوحة MPPT مدمجة, شحن ليثيوم 4.2 فولت, كفاءة عالية.