1. Увод
The PowMr SL03-30A Solar Charge Controller is designed to manage the power flow from your solar panels to your battery bank, ensuring efficient charging and protecting your batteries from overcharge and over-discharge. This controller is suitable for 12V/24V systems and supports various battery types including Lithium and Lead-Acid batteries. It features an LCD display for monitoring system parameters and offers multiple protection functions to enhance system safety and longevity.
2. Кључне карактеристике

Слика: Прекоview of the PowMr SL03-30A Solar Charge Controller's main features, including 12V/24V auto-detection, energy recording, temperature compensation, aluminum heat sink, eight electronic protections, compatibility with Lithium/Lead-acid batteries, and light & timer control.
- 12V/24V Auto-detection: Automatically identifies system voltage.
- Energy Recording/Current Display: Provides real-time monitoring of energy and current.
- Компензација температуре: Adjusts charging parameters based on ambient temperature.
- Алуминијумски хладњак: Ensures efficient heat dissipation for stable operation.
- Eight Electronic Protections: Comprehensive safety features including overcharge, over-discharge, short-circuit, and reverse current protection.
- Компатибилност батерија: Supports Lithium and Lead-Acid battery types (Flooded, GEL, AGM, LiFePO4).
- Light & Timer Control: Programmable load control functions.
- ЛЦД екран: Clear interface for parameter viewing and adjustment.

Слика: Интерна view of the controller highlighting key components such as the copper coil for stable charge/discharge, a fuse for double protection, and MOSFETs made from good raw materials for current sensing.
3. Безбедносна упутства
Please read all instructions carefully before installation and operation. Failure to follow these instructions may result in damage to the controller, battery, or solar panels, and may void the warranty.
- Ensure the battery is connected first to allow the controller to recognize the system voltage.
- Always connect the solar panels and load after the battery.
- Disconnect the solar panels and load before disconnecting the battery.
- Install the controller in a well-ventilated, dry, and cool environment, away from flammable materials.
- Avoid touching or short-circuiting wires or terminals.
- Користите одговарајуће пресеке жица за све спојеве како бисте спречили прегревање.
- This device is for indoor use only. Avoid exposure to water or excessive humidity.
- Чувати ван домашаја деце.
4. Инсталација
4.1 Wiring Sequence
- Connect the battery to the charge controller. Ensure correct polarity (+ to + and - to -). The controller will display the battery voltage.
- Connect the solar panel to the charge controller. Ensure correct polarity. The controller will begin charging the battery.
- Connect the load to the charge controller. Ensure correct polarity.
Важно: Always connect the battery first and disconnect it last. This sequence prevents damage to the controller from voltagе сургес.
4.2 Монтажа
Mount the controller vertically on a wall or flat surface in a well-ventilated area, away from direct sunlight, high temperatures, and water. Ensure there is sufficient air circulation around the heat sink.

Image: The PowMr SL03-30A Solar Charge Controller showing its mounting holes on the sides, indicating how it can be affixed to a surface.

Image: A detailed wiring diagram for the solar charge controller, showing connections for PV combiner box, battery bank, DC load, and inverter. It also illustrates the LCD display and various parameters.
4.3 Video Guide: How to Connect the Controller
Video: This video demonstrates the correct wiring procedure for the PowMr SL03-30A Solar Charge Controller, showing how to connect the battery and solar panels. It also shows how to browse the interface and adjust settings.
5. Операција
5.1 LCD Display and Buttons
The controller features an LCD display and three buttons for operation: UP, DOWN, and SET.
- Дугме ГОРЕ: Navigates through display interfaces, increases parameter values.
- Дугме ДОЛЕ: Navigates through display interfaces, decreases parameter values.
- СЕТ дугме: Enters/exits setting mode, confirms parameter changes.
5.2 Browsing Display Interfaces
Press the UP or DOWN button to cycle through various display interfaces, including battery voltage, charging current, accumulated discharge, and load status.
5.3 Подешавања параметара
To enter the setting interface, long-press the SET button for 5 seconds. Use the UP and DOWN buttons to adjust values and the SET button to confirm and move to the next parameter. Long-press SET again to save changes and exit.
Подесиви параметри укључују:
- Тип батерије: Select the correct battery type (e.g., Lead-Acid, Lithium).
- Режим контроле оптерећења: Set timer for load operation (e.g., 24H for continuous, 16H for dusk-to-dawn).
- Цхарге Волtage: Adjust maximum charge voltage.
- Дисцхарге Цут-офф Волtage: Подесите минималну запреминуtage before load disconnection.
- Поновно повезивање пражњењаtage: Подесите волtage at which the load reconnects.
Refer to the "Specifications" section for default and adjustable ranges for each parameter.
6. Заштитне функције

Image: A circular diagram illustrating the eight electronic protection features of the PowMr SL03-30A Solar Charge Controller, including power off memory, short-circuit, over-charging, open-circuit, over-load, under-voltage discharge, over-heat, and dual MOSFET reverse current protection.
The PowMr SL03-30A controller incorporates multiple protection mechanisms to ensure the safety and longevity of your solar system:
- Заштита од прекомерног пуњења: Prevents battery damage from excessive charging.
- Заштита од прекомерног пражњења: Disconnects the load when battery voltage drops below a safe level.
- Заштита од кратког споја: Аутоматски се искључује у случају кратког споја.
- Open-circuit Protection: Protects the system if the solar panel circuit is open.
- Заштита од обрнутог поларитета: Prevents damage from incorrect battery or solar panel connections.
- Заштита од преоптерећења: Disconnects the load if current exceeds the rated limit.
- Заштита од прегревања: Reduces power or shuts down if the controller's internal temperature is too high.
- Искључена меморија: Чува подешавања чак и након нестанка струје.
7. Спецификације

Image: A comprehensive table detailing the specifications for PowMr SL03-10A, SL03-20A, SL03-30A, and SL03-40A models, including normal battery voltage, charge/discharge current, battery type, system recognize range, charging regulation, maximum PV open circuit voltage, and various protection parameters.
| Параметар | Value (SL03-30A) |
|---|---|
| Нормална батерија Волtage | 12В/24В Ауто |
| Цхарге Цуррент | 30А |
| Струја пражњења | 30А |
| Тип батерије | Lead-Acid Battery (Flooded, AGM, Gel, Calcium), LiFePO4 (Lithium) |
| System Recognize Range | Lead-Acid Battery: 8V-15V(12V System), 18V-30V(24V System) LiFePO4: 8V-15V(12V), 18V-30V(24V) |
| Charging Regulation | Bulk, Absorption, Float, Equalization |
| Макс. ПВ Опен Цирцуит Волtagе (Воц) | <=50В |
| Max. PV Input Wattagе (12В/24В) | 360В/720В |
| Stop-charge Voltage | Default 14.4V (12V), 28.8V (24V) (adjustable) |
| Float-charge Voltage | Default 13.6V (12V), 27.2V (24V) (adjustable) |
| Лов Волtage Reconnected | Default 12.4V (12V), 24.8V (24V) (adjustable) |
| Лов Волtagе Искључивање | Default 10.8V (12V), 21.6V (24V) (adjustable) |
| No Load Losses | <10мА |
| Компензација температуре батерије | Automatic with optional NTC thermal probe (adjustable) |
| Радна температура | -20°Ц до +60°Ц |
| Outline Size (L*W*H) | 143*77*40 мм |
| Размак монтажних рупа | 134*55мм |
| Тежина | 260г |
КСНУМКС. Решавање проблема
This section provides solutions to common issues you might encounter with your PowMr SL03-30A Solar Charge Controller.
| Проблем | Могући узрок | Решење |
|---|---|---|
| Дисплеј контролера је искључен. | Није повезана батерија или је батерија напуњенаtagе прениско. | Connect the battery correctly. Ensure battery voltagе је изнад 8 В. |
| "LLL" or "HHH" displayed on screen. | No PV input or PV voltage too low/high. | Ensure solar panels are connected and receiving sunlight. Check PV voltage. |
| Батерија се не пуни. | Solar panel not connected, insufficient sunlight, or incorrect wiring. | Check solar panel connections and ensure adequate sunlight. Verify wiring polarity. |
| Оптерећење не ради. | Load disconnected, battery voltage too low (over-discharge protection), or load control settings. | Check load connections. Charge battery. Adjust load control timer (e.g., set to 24H for continuous). |
| Прегревање контролера. | Слаба вентилација или прекомерно оптерећење/струја пуњења. | Ensure proper ventilation around the controller. Reduce load or charging current if consistently overheating. |
9. Одржавање
Regular maintenance ensures optimal performance and extends the lifespan of your solar charge controller.
- чистоћа: Одржавајте контролер чистим и без прашине и прљавштине. Користите суву крпу за чишћење.
- Везе: Периодично проверавајте све спојеве ожичења да ли су чврсти и да ли постоји корозија. Лабави спојеви могу проузроковати прегревање и лоше перформансе.
- вентилација: Ensure the ventilation openings are not blocked to allow for proper heat dissipation.
- Здравље батерије: Запремина батерије монитораtage and health regularly. Replace batteries as needed.
- Услови животне средине: Ensure the controller is operating within its specified temperature and humidity ranges.
10. Гаранција и подршка
For warranty information, technical support, or service inquiries, please contact PowMr customer service through the retailer where the product was purchased or visit the official PowMr website. Please have your model number (SL03-30A) and purchase date available when contacting support.
За више информација посетите PowMr Store.