1. Ievads
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. Drošības informācija
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.
- Pirms strāvas pieslēgšanas pārliecinieties, vai visi savienojumi ir pareizi un droši.
- Do not connect the solar controller to an AC power source.
- Uzstādiet regulatoru labi vēdināmā vietā, prom no viegli uzliesmojošiem materiāliem un tiešiem saules stariem.
- Izvairieties no akumulatora vai saules paneļa spaiļu īssavienojuma.
- Vienmēr vispirms pievienojiet akumulatoru, pēc tam saules paneli un visbeidzot slodzi. Atvienošana jāveic apgrieztā secībā.
- This device is not waterproof; protect it from moisture and water.
- Uzstādīšanu un apkopi drīkst veikt tikai kvalificēts personāls.
3. Produkta īpašības
- 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. Iepakojuma saturs
Lūdzu, pārbaudiet iepakojuma saturu pēc saņemšanas:
- 1 x POWERTECH MP3752 Solar Controller
- 1 x Lietotāja rokasgrāmata (šis dokuments)
5. Produkts beidziesview un Savienojumi

1. attēls. Priekšpuse 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.
Savienojuma termināļi:
- Solar Panel Input (PV): Connect your solar panel array here. Ensure correct polarity (+ and -).
- Akumulatora savienojums: Connect your 12V or 24V battery bank here. Observe correct polarity (+ and -).
- Ielādēt izeju: Connect your DC loads (e.g., lights, fans) here. Observe correct polarity (+ and -).
- USB ports: 5V, 1.2A max output for charging small electronic devices.
6. Iestatīšana un instalēšana
Lai pareizi uzstādītu saules enerģijas uzlādes regulatoru, veiciet tālāk norādītās darbības.
- Montāža: Choose a dry, well-ventilated indoor location, away from direct sunlight, high temperatures, and moisture. Ensure sufficient air circulation around the controller.
- Akumulatora savienojums:
- 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.
- Saules paneļa savienojums:
- 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).
- Ielādēt savienojumu:
- 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).
- Pārbaudiet savienojumus: 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. Lietošanas instrukcijas
7.1. Automatic System Voltage Atzīšana
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 noteikšana.
7.2. Uzlādes režīmi
The MP3752 employs intelligent PWM charging, automatically cycling through different stages to optimize battery health and lifespan:
- Lielapjoma maksa: 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).
- Pludiņa maksa: Maintains the battery at a full charge by providing a small, constant voltage, compensating for self-discharge.
7.3. Slodzes kontrole
The load output is controlled by the controller to prevent over-discharge of the battery. When the battery voltage nokrītas zem 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 uzlādes ports
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. Rādītāji
The POWERTECH MP3752 features several LED indicators to provide real-time status information:
- PV LOAD (Solar Panel Indicator):
- Zaļš: Solar panel is connected and generating power.
- Izslēgts: No solar input or insufficient light.
- Uzlādes indikators:
- Zaļš: Akumulators tiek uzlādēts.
- Izslēgts: Battery is fully charged or not charging.
- Overvoltage Indikators:
- Sarkans: Ievades apjomstage from solar panel is too high, or battery voltage is overcharge protection level.
- UVW (Battery Voltage indikators): Multiple LEDs indicating battery charge level.
- LVD (zems tilpumstage Disconnect Indicator):
- Sarkans: Akumulatora tilpumstage is low, load output has been disconnected.
- Load ON Indicator:
- Zaļš: Load output is active.
- Over Load Indicator:
- Sarkans: Load current exceeds the maximum rated current. Load output may be temporarily disconnected.
- Short-Circuit Indicator:
- Sarkans: Short-circuit detected on the load output. Load output will be disconnected.
9. Apkope
To ensure optimal performance and longevity of your solar charge controller, regular maintenance is recommended:
- Tīrīšana: Periodically clean the exterior of the controller with a dry, soft cloth. Do not use solvents or abrasive cleaners.
- Savienojumi: Annually check all wiring connections for tightness and corrosion. Loose connections can cause overheating and poor performance.
- Ventilācija: Pārliecinieties, ka ventilācijas atveres nav bloķētas un ap ierīci ir pietiekama gaisa plūsma.
- Pārbaude: Inspect the controller for any signs of physical damage, discoloration, or unusual odors.
10. Traucējummeklēšana
| Problēma | Iespējamais cēlonis | Risinājums |
|---|---|---|
| No charging from solar panel. |
|
|
| Load output not working. |
|
|
| Overvoltage indikators ir ieslēgts. |
|
|
11. Specifikācijas
| Parametrs | Vērtība |
|---|---|
| Modeļa numurs | MP3752 (03617080) |
| System Voltage | 12V/24V Auto-sensing |
| Maks. Uzlādes strāva | 20A |
| Maks. Slodzes strāva | 20A |
| USB izeja | 5V, 1.2A Maks |
| Uzlādes veids | PWM (Bulk, Equalise, Float) |
| Atbalstītie akumulatoru veidi | Sealed Lead-Acid, Gel, Flooded |
| Produkta izmēri | 5.83 x 3.39 x 1.38 collas |
| Preces svars | 5.6 unces |
| Ražotājs | POWERTECH |
| Zīmols | Džeikars |
12. Garantija un atbalsts
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.
Piezīme: Neatļauta produkta izjaukšana vai pārveidošana anulēs garantiju.





