1. Въведение
The POWERTECH MP3752 is an intelligent and lightweight solar charge controller designed to manage the power flow from your solar panels to your battery bank. Utilizing Pulse Width Modulation (PWM) technology, it ensures efficient and safe battery charging. This controller offers a set-and-forget operation, providing maximum charge into your batteries without constant monitoring. It integrates essential safety features such as overload, short-circuit, over-discharge, and reverse-polarity protection. Additionally, a convenient USB port on the front panel allows for up to 1.2A charging, useful for mobile devices during power outages. The unit supports various battery types including sealed lead-acid, Gel, and flooded cells, and automatically selects the optimal charging mode (bulk, equalise, float).
2. Информация за безопасност
Please read all instructions carefully before installation and operation. Failure to follow these instructions may result in damage to the unit, battery, or personal injury.
- Уверете се, че всички връзки са правилни и сигурни, преди да включите захранването.
- Do not connect the solar controller to an AC power source.
- Инсталирайте контролера в добре проветриво помещение, далеч от запалими материали и пряка слънчева светлина.
- Avoid short-circuiting the battery terminals or solar panel terminals.
- Always connect the battery first, then the solar panel, and finally the load. Disconnect in reverse order.
- This device is not waterproof; protect it from moisture and water.
- Само квалифициран персонал трябва да извършва монтаж и поддръжка.
3. Характеристики на продукта
- Automatic charge mode selection (Bulk, Equalise, Float).
- Suitable for both 12V and 24V battery banks.
- Integrated USB charging port (5V, 1.2A max) on the front panel.
- Supports sealed lead-acid, Gel, and flooded battery types.
- Comprehensive protection features: overload, short-circuit, over-discharge, reverse-polarity.
- Pulse Width Modulation (PWM) charging technology.
4. Съдържание на пакета
Моля, проверете съдържанието на пакета при получаване:
- 1 x POWERTECH MP3752 Solar Controller
- 1 x Ръководство за потребителя (този документ)
5. Продуктът свършиview и Връзки

Фигура 1: Отпред view of the POWERTECH MP3752 Solar Controller. This image displays the PV LOAD, UVW, LVD, Load ON, Over Load, Short-Circuit indicators, the USB port, and the connection terminals for solar panels, battery, and load.
The MP3752 controller features clearly marked terminals for easy connection. Refer to Figure 1 for a visual guide to the controller's layout and indicators.
Терминали за свързване:
- Solar Panel Input (PV): Connect your solar panel array here. Ensure correct polarity (+ and -).
- Свързване на батерията: Connect your 12V or 24V battery bank here. Observe correct polarity (+ and -).
- Изходно натоварване: Connect your DC loads (e.g., lights, fans) here. Observe correct polarity (+ and -).
- USB порт: 5V, 1.2A max output for charging small electronic devices.
6. Настройка и инсталация
Следвайте тези стъпки за правилно инсталиране на вашия контролер за зареждане на слънчева енергия:
- Монтаж: Choose a dry, well-ventilated indoor location, away from direct sunlight, high temperatures, and moisture. Ensure sufficient air circulation around the controller.
- Свързване на батерията:
- Connect the positive (+) terminal of the battery to the battery positive (+) terminal on the controller.
- Connect the negative (-) terminal of the battery to the battery negative (-) terminal on the controller.
- The controller will automatically detect if it's a 12V or 24V system.
- Свързване на слънчевия панел:
- Connect the positive (+) terminal of the solar panel to the solar panel positive (+) terminal on the controller.
- Connect the negative (-) terminal of the solar panel to the solar panel negative (-) terminal on the controller.
- Ensure the open-circuit voltage of the solar panel does not exceed the maximum input voltage of the controller (typically 50V for 12/24V systems).
- Заредете връзка:
- Connect the positive (+) terminal of your DC load to the load positive (+) terminal on the controller.
- Connect the negative (-) terminal of your DC load to the load negative (-) terminal on the controller.
- Do not exceed the maximum rated current for the load output (20A).
- Проверете връзките: Double-check all connections for correct polarity and tightness before proceeding.

Figure 2: The POWERTECH MP3752 Solar Controller shown in its packaging, illustrating its application with solar panels. This image provides a contextual view of the product's intended use.
7. Инструкции за работа
7.1. Automatic System Voltage Разпознаване
The controller automatically detects whether the connected battery bank is 12V or 24V upon initial connection. Ensure the battery is connected first for proper voltage откриване.
7.2. Режими на зареждане
The MP3752 employs intelligent PWM charging, automatically cycling through different stages to optimize battery health and lifespan:
- Групово таксуване: Delivers maximum current to rapidly bring the battery to approximately 80% charge.
- Equalise Charge: Periodically applies a higher voltage to equalize the charge among battery cells, preventing sulfation and extending battery life (for flooded batteries).
- Плаваща такса: Maintains the battery at a full charge by providing a small, constant voltagд., компенсирайки саморазреждането.
7.3. Контрол на натоварването
The load output is controlled by the controller to prevent over-discharge of the battery. When the battery voltage пада под Low Voltage Disconnect (LVD) threshold, the load output will be automatically disconnected. It will reconnect once the battery has recharged to the Low Voltage Reconnect (LVR) threshold.
Press the power button on the controller to manually turn the load output ON or OFF.
7.4. USB порт за зареждане
The 5V, 1.2A USB port can be used to charge small electronic devices like smartphones or tablets. This port is active as long as the battery has sufficient charge.
8. Индикатори
The POWERTECH MP3752 features several LED indicators to provide real-time status information:
- PV LOAD (Solar Panel Indicator):
- зелено: Solar panel is connected and generating power.
- Изключено: No solar input or insufficient light.
- Индикатор за зареждане:
- зелено: Батерията се зарежда.
- Изключено: Battery is fully charged or not charging.
- Overvoltage Индикатор:
- червено: Входен обемtage from solar panel is too high, or battery voltage is overcharge protection level.
- UVW (Battery Voltage Индикатор): Multiple LEDs indicating battery charge level.
- LVD (ниска сила на звукаtage Disconnect Indicator):
- червено: Батерия voltage is low, load output has been disconnected.
- Load ON Indicator:
- зелено: Load output is active.
- Over Load Indicator:
- червено: Load current exceeds the maximum rated current. Load output may be temporarily disconnected.
- Short-Circuit Indicator:
- червено: Short-circuit detected on the load output. Load output will be disconnected.
9. Поддръжка
To ensure optimal performance and longevity of your solar charge controller, regular maintenance is recommended:
- Почистване: Periodically clean the exterior of the controller with a dry, soft cloth. Do not use solvents or abrasive cleaners.
- Връзки: Annually check all wiring connections for tightness and corrosion. Loose connections can cause overheating and poor performance.
- Вентилация: Уверете се, че вентилационните отвори не са блокирани и че има достатъчен въздушен поток около устройството.
- Инспекция: Inspect the controller for any signs of physical damage, discoloration, or unusual odors.
10. Отстраняване на проблеми
| проблем | Възможна причина | Решение |
|---|---|---|
| No charging from solar panel. |
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| Load output not working. |
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| Overvoltage индикаторът е включен. |
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11. Спецификации
| Параметър | Стойност |
|---|---|
| Номер на модела | MP3752 (03617080) |
| System Voltage | 12V/24V Автоматично разпознаване |
| Макс. Ток на зареждане | 20A |
| Макс. Ток на натоварване | 20A |
| USB изход | 5V, 1.2A Макс |
| Тип зареждане | PWM (Bulk, Equalise, Float) |
| Поддържани типове батерии | Sealed Lead-Acid, Gel, Flooded |
| Размери на продукта | 5.83 x 3.39 x 1.38 инча |
| Тегло на артикула | 5.6 унции |
| производител | POWERTECH |
| Марка | Джейкар |
12. Гаранция и поддръжка
This product is covered by a standard manufacturer's warranty against defects in materials and workmanship. Please refer to your purchase documentation for specific warranty terms and duration. For technical support, troubleshooting assistance, or warranty claims, please contact your retailer or the manufacturer directly.
Забележка: Неоторизираното разглобяване или модификация на продукта ще анулира гаранцията.





