PowMr SL03-30A
PowMr SL03-30A Solar Charge Controller User Manual
Model: SL03-30A
1. Úvod
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. Klíčové vlastnosti

Obrázek: Overview 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.
- Teplotní kompenzace: Upravuje parametry nabíjení na základě okolní teploty.
- Hliníkový chladič: Zajišťuje efektivní odvod tepla pro stabilní provoz.
- Eight Electronic Protections: Comprehensive safety features including overcharge, over-discharge, short-circuit, and reverse current protection.
- Kompatibilita baterie: Supports Lithium and Lead-Acid battery types (Flooded, GEL, AGM, LiFePO4).
- Light & Timer Control: Programmable load control functions.
- LCD displej: Clear interface for parameter viewa úpravy.

Obrázek: Interní 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. Bezpečnostní pokyny
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.
- Pro všechna připojení používejte vodiče vhodného průřezu, abyste zabránili přehřátí.
- This device is for indoor use only. Avoid exposure to water or excessive humidity.
- Uchovávejte mimo dosah dětí.
4. Instalace
4.1 Pořadí zapojení
- 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.
Důležité: Always connect the battery first and disconnect it last. This sequence prevents damage to the controller from voltage přepětí.
4.2 Montáž
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. Provoz
5.1 LCD displej a tlačítka
The controller features an LCD display and three buttons for operation: UP, DOWN, and SET.
- Tlačítko NAHORU: Navigates through display interfaces, increases parameter values.
- Tlačítko DOLŮ: Navigates through display interfaces, decreases parameter values.
- Tlačítko 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 Nastavení parametrů
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:
- Typ baterie: Select the correct battery type (e.g., Lead-Acid, Lithium).
- Režim ovládání zatížení: Set timer for load operation (e.g., 24H for continuous, 16H for dusk-to-dawn).
- Charge Voltage: Adjust maximum charge voltage.
- Vypínací mezní objemtage: Nastavte minimální objemtage before load disconnection.
- Vybití Objem opětovného připojenítage: Nastavte objemtage at which the load reconnects.
Refer to the "Specifications" section for default and adjustable ranges for each parameter.
6. Ochranné funkce

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:
- Ochrana proti přebití: Zabraňuje poškození baterie v důsledku nadměrného nabíjení.
- Ochrana proti nadměrnému vybití: Odpojí zátěž při vybití baterietage klesne pod bezpečnou úroveň.
- Ochrana proti zkratu: Automaticky se vypne v případě zkratu.
- Open-circuit Protection: Protects the system if the solar panel circuit is open.
- Ochrana proti přepólování: Prevents damage from incorrect battery or solar panel connections.
- Ochrana proti přetížení: Disconnects the load if current exceeds the rated limit.
- Ochrana proti přehřátí: Reduces power or shuts down if the controller's internal temperature is too high.
- Paměť pro vypnutí: Zachovává nastavení i po výpadku napájení.
7. Specifikace

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.
| Parametr | Value (SL03-30A) |
|---|---|
| Normální baterie Voltage | 12V / 24V Auto |
| Nabíjecí proud | 30A |
| Vybíjecí proud | 30A |
| Typ baterie | 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 |
| Max. PV Open Circuit Voltage (Voc) | <= 50 V |
| Max. PV Input Wattage (12 V/24 V) | 360W/720W |
| Stop-charge Voltage | Default 14.4V (12V), 28.8V (24V) (adjustable) |
| Float-charge Voltage | Default 13.6V (12V), 27.2V (24V) (adjustable) |
| Nízký objemtage Reconnected | Default 12.4V (12V), 24.8V (24V) (adjustable) |
| Nízký objemtage Odpojení | Default 10.8V (12V), 21.6V (24V) (adjustable) |
| No Load Losses | <10 mA |
| Kompenzace teploty baterie | Automatic with optional NTC thermal probe (adjustable) |
| Provozní teplota | -20°C až +60°C |
| Outline Size (L*W*H) | 143 * 77 * 40 mm |
| Rozteč montážních otvorů | 134*55 mm |
| Hmotnost | 260 g |
8. Řešení problémů
This section provides solutions to common issues you might encounter with your PowMr SL03-30A Solar Charge Controller.
| Problém | Možná příčina | Řešení |
|---|---|---|
| Displej ovladače je vypnutý. | Není připojena baterie nebo je baterie příliš vybitátage příliš nízké. | Connect the battery correctly. Ensure battery voltage je vyšší než 8 V. |
| "LLL" or "HHH" displayed on screen. | No PV input or PV voltagpříliš nízké/vysoké. | Ensure solar panels are connected and receiving sunlight. Check PV voltage. |
| Baterie se nenabíjí. | Solar panel not connected, insufficient sunlight, or incorrect wiring. | Check solar panel connections and ensure adequate sunlight. Verify wiring polarity. |
| Zatížení nefunguje. | Zátěž odpojena, vybitá baterietage 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). |
| Přehřátí regulátoru. | Poor ventilation or excessive load/charging current. | Ensure proper ventilation around the controller. Reduce load or charging current if consistently overheating. |
9. Údržba
Pravidelná údržba zajišťuje optimální výkon a prodlužuje životnost vašeho solárního regulátoru nabíjení.
- Čistota: Udržujte ovladač čistý a bez prachu a nečistot. K čištění používejte suchý hadřík.
- Spojení: Pravidelně kontrolujte veškeré kabelové spoje, zda nejsou pevně utažené a zda nejsou zkorodované. Volné spoje mohou způsobit přehřátí a špatný výkon.
- Větrání: Ujistěte se, že větrací otvory nejsou zablokované, aby bylo zajištěno správné odvádění tepla.
- Stav baterie: Monitor baterie voltage and health regularly. Replace batteries as needed.
- Podmínky prostředí: Ensure the controller is operating within its specified temperature and humidity ranges.
10. Záruka a podpora
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.
Pro více informací navštivte PowMr Store.
Ask a question about this manual
Ask about setup, troubleshooting, compatibility, parts, safety, or missing instructions. Manuals+ will review the question and use this page’s manual context to help answer it.