1. Уводзіны
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. Асноўныя магчымасці

Выява: Зверхуview 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.
- Тэмпературная кампенсацыя: Adjusts charging parameters based on ambient temperature.
- Алюмініевы радыятар: Забяспечвае эфектыўнае рассейванне цяпла для стабільнай працы.
- Eight Electronic Protections: Comprehensive safety features including overcharge, over-discharge, short-circuit, and reverse current protection.
- Сумяшчальнасць з батарэяй: Supports Lithium and Lead-Acid battery types (Flooded, GEL, AGM, LiFePO4).
- Light & Timer Control: Programmable load control functions.
- ВК-дысплей: Clear interface for parameter viewing and adjustment.

Выява: Унутраная 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. Інструкцыі па тэхніцы бяспекі
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.
- Use appropriate wire gauges for all connections to prevent overheating.
- This device is for indoor use only. Avoid exposure to water or excessive humidity.
- Захоўваць у месцах, недаступных дзецям.
4. Ўстаноўка
4.1 Паслядоўнасць падключэння
- 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.
Важна: Always connect the battery first and disconnect it last. This sequence prevents damage to the controller from voltagэлектронныя скокі.
4.2 Мантаж
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. Аперацыя
5.1 ВК-дысплей і кнопкі
The controller features an LCD display and three buttons for operation: UP, DOWN, and SET.
- Кнопка UP: Navigates through display interfaces, increases parameter values.
- Кнопка ўніз: Navigates through display interfaces, decreases parameter values.
- Кнопка SET: 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 Налады параметраў
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.
Adjustable parameters include:
- Тып батарэі: Select the correct battery type (e.g., Lead-Acid, Lithium).
- Рэжым кіравання нагрузкай: Set timer for load operation (e.g., 24H for continuous, 16H for dusk-to-dawn).
- Зарада Voltage: Adjust maximum charge voltage.
- Разраду Cut-off Voltage: Усталюйце мінімальны аб'ёмtage before load disconnection.
- Discharge Reconnect Voltage: Усталюйце гучнасцьtage at which the load reconnects.
Refer to the "Specifications" section for default and adjustable ranges for each parameter.
6. Функцыі абароны

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:
- Абарона ад перазарадкі: Запабягае пашкоджанню акумулятара з-за празмернай зарадкі.
- Абарона ад празмернага разраду: Disconnects the load when battery voltagе падае ніжэй за бяспечны ўзровень.
- Абарона ад кароткага замыкання: Аўтаматычна адключаецца ў выпадку кароткага замыкання.
- Open-circuit Protection: Protects the system if the solar panel circuit is open.
- Абарона ад зваротнай палярнасці: Prevents damage from incorrect battery or solar panel connections.
- Абарона ад перагрузкі: Disconnects the load if current exceeds the rated limit.
- Абарона ад перагрэву: Reduces power or shuts down if the controller's internal temperature is too high.
- Выключэнне памяці: Захоўвае налады нават пасля адключэння электрычнасці.
7. Тэхнічныя характарыстыкі

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.
| Параметр | Value (SL03-30A) |
|---|---|
| Нармальны аб'ём батарэіtage | 12V / 24V Аўто |
| Ток зарада | 30А |
| Ток разраду | 30А |
| Тып батарэі | 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. PV Open Circuit Voltagе (Voc) | <= 50 В |
| Max. PV Input Wattage (12В/24В) | 360 Вт/720 Вт |
| Stop-charge Voltage | Default 14.4V (12V), 28.8V (24V) (adjustable) |
| Float-charge Voltage | Default 13.6V (12V), 27.2V (24V) (adjustable) |
| Нізкі абtage Reconnected | Default 12.4V (12V), 24.8V (24V) (adjustable) |
| Нізкі абtage Адключэнне | Default 10.8V (12V), 21.6V (24V) (adjustable) |
| No Load Losses | <10 мА |
| Кампенсацыя тэмпературы батарэі | Automatic with optional NTC thermal probe (adjustable) |
| Працоўная тэмпература | -20°C да +60°C |
| Outline Size (L*W*H) | 143*77*40 мм |
| Адлегласць паміж мантажнымі адтулінамі | 134*55 мм |
| Вага | 260 г |
8. Выпраўленне непаладак
This section provides solutions to common issues you might encounter with your PowMr SL03-30A Solar Charge Controller.
| праблема | Магчымая прычына | Рашэнне |
|---|---|---|
| Дысплей кантролера выключаны. | Акумулятар не падключаны або зарад батарэіtagе занадта нізка. | Connect the battery correctly. Ensure battery voltage вышэй за 8 В. |
| "LLL" or "HHH" displayed on screen. | No PV input or PV voltagзанадта нізкі/высокі. | Ensure solar panels are connected and receiving sunlight. Check PV voltage. |
| Акумулятар не зараджаецца. | Solar panel not connected, insufficient sunlight, or incorrect wiring. | Check solar panel connections and ensure adequate sunlight. Verify wiring polarity. |
| Загрузка не працуе. | 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). |
| Controller overheating. | Poor ventilation or excessive load/charging current. | Ensure proper ventilation around the controller. Reduce load or charging current if consistently overheating. |
9. Тэхнічнае абслугоўванне
Рэгулярнае тэхнічнае абслугоўванне забяспечвае аптымальную прадукцыйнасць і падаўжае тэрмін службы вашага кантролера сонечнай зарадкі.
- Чысціня: Трымайце кантролер чыстым і без пылу і смецця. Выкарыстоўвайце для чысткі сухую тканіну.
- Сувязі: Periodically check all wiring connections for tightness and corrosion. Loose connections can cause overheating and poor performance.
- Вентыляцыя: Ensure the ventilation openings are not blocked to allow for proper heat dissipation.
- Зарад батарэі: Аб'ём батарэі манітораtage and health regularly. Replace batteries as needed.
- Умовы навакольнага асяроддзя: Ensure the controller is operating within its specified temperature and humidity ranges.
10. Гарантыя і падтрымка
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.
Для атрымання дадатковай інфармацыі наведайце PowMr Store.





