Introduction
This manual provides essential information for the safe and efficient operation of your PowMr 4500W Solar Inverter. This all-in-one hybrid solar charge inverter integrates solar energy storage, utility charging, and AC sine wave output. It features a 150A MPPT solar charge controller for optimized efficiency and is compatible with various 24V battery types.
Product Overview

Front view of the PowMr 4500W Solar Inverter, showcasing its sleek design and LCD display.
The PowMr 4500W Solar Inverter is designed for robust performance in various home applications. It features a sleek design with a tempered glass panel and touch screen buttons for enhanced user experience. Key components include a 150A MPPT solar charge controller, supporting a wide photovoltaic input range of 55-450Vdc, and a maximum solar array capacity of 6000W. The inverter provides a maximum AC output power of 4500W with a power factor of 1.0.
It is equipped with built-in lithium battery activation and multiple protection mechanisms to ensure safety and longevity. The inverter is suitable for 24V systems and supports various battery types including AGM, Gel, Lead-acid, Lithium-ion, and LiFePO4 batteries.
Unboxing
Upon receiving your PowMr 4500W Solar Inverter, carefully open the packaging and verify all contents. The package typically includes the inverter unit and a user manual.
Video: Unboxing the PowMr 4500W Solar Inverter. This video demonstrates the careful unboxing process and shows the contents of the package, including the inverter unit and documentation.
Ensure that the inverter is free from any visible damage before proceeding with installation.
Setup and Installation
Proper installation is crucial for the safe and efficient operation of your solar inverter. Please follow these steps carefully. It is recommended that installation be performed by a qualified professional.
- Mounting the Inverter: Securely mount the inverter to a wall or suitable vertical surface using appropriate screws and mounting hardware. Ensure the location is well-ventilated and protected from direct sunlight and moisture.
- Removing the Port Cover: Carefully remove the protective port cover at the bottom of the inverter to access the wiring terminals.
- Connecting the Battery: Connect the battery cables to the designated battery terminals on the inverter. Ensure correct polarity (positive to positive, negative to negative).
- Connecting the Photovoltaic Array: Connect the solar panel (PV) array cables to the PV input terminals. Observe correct polarity and ensure the PV input voltage is within the specified range (55-450Vdc).
- Connecting the AC Input: Connect the AC utility input cables to the AC input terminals.
- Connecting the AC Load: Connect your AC loads to the AC output terminals.
- Grounding the Inverter: Connect a ground wire from the inverter's grounding terminal to a reliable earth ground.
- Replacing the Port Cover: Once all connections are secure, replace the port cover to protect the terminals.
- Activating the System: Close the circuit breaker for the system. Turn on the inverter switch. The inverter will activate and display operational data on the LCD screen.
Video: Inverter Quick Installation Wiring Guide. This video provides a visual step-by-step guide for wiring and installing the inverter, covering battery, PV, AC input, and AC load connections, as well as grounding and activation.
Always ensure all connections are tight and secure to prevent electrical hazards.
Operating Modes
The PowMr 4500W Solar Inverter supports flexible charging and output modes to suit various energy management needs.
Charging Modes:
- Solar Power Priority: The inverter primarily uses solar energy to charge the battery.
- Utility Power Priority: The inverter prioritizes utility grid power for battery charging.
- AC Power Priority: The inverter uses AC power (from utility or generator) to charge the battery.
Output Modes:
- Solar Priority: Loads are primarily powered by solar energy.
- Utility Priority: Loads are primarily powered by the utility grid.
- Battery Priority: Loads are primarily powered by the battery.
Refer to the inverter's LCD display and control buttons (ESC, UP, DOWN, ENTER) for navigating and selecting desired operating modes. The 6.25-inch LCD display with backlight provides clear status and data.
Battery Compatibility and Protection
This inverter is compatible with a wide range of 24V batteries, including:
- AGM batteries
- Gel batteries
- Lead-acid batteries
- Lithium-ion batteries
- LiFePO4 batteries
It features built-in lithium activation, which automatically activates lithium batteries when solar energy is present (after 3 seconds). Comprehensive battery protection features include short circuit protection, over/under voltage protection, and overcharge protection, all designed to extend battery life and ensure safe operation.

Image: The inverter is compatible with AGM, Gel, FLD, Li, and SLD battery types. When solar energy is available, lithium batteries are activated after 3 seconds.

Image: Full protection features including over temperature, over voltage, PV over voltage, short circuit, discharge, and over charge protection.
Maintenance
Regular maintenance ensures the longevity and optimal performance of your PowMr solar inverter.
- Cleaning: Keep the inverter's exterior clean. The tempered glass panel is easy to clean. Ensure ventilation openings are free from dust and debris. The inverter includes three cooling fans and a dust-proof cover to aid in heat dissipation and dust prevention.
- Connection Checks: Periodically inspect all electrical connections (battery, PV, AC input/output, ground) for tightness and corrosion.
- Environmental Conditions: Ensure the inverter is operating within its specified environmental conditions (temperature, humidity) to prevent overheating or damage.
- Firmware Updates: Check the manufacturer's website for any available firmware updates to ensure your inverter has the latest features and bug fixes.

Image: Smart design with cooling fans for heat dissipation and a dust-proof cover to protect internal components, extending service life.
Troubleshooting
If you encounter issues with your PowMr solar inverter, refer to the following general troubleshooting tips. For complex problems, contact customer support.
- No Power/Display Off:
- Check all circuit breakers and fuses.
- Verify battery connections and voltage.
- Ensure the inverter's ON/OFF switch is in the 'ON' position.
- Low Output Power:
- Check PV array connections and ensure panels are clean and not shaded.
- Verify battery charge level.
- Ensure AC load does not exceed the inverter's rated output power.
- Error Codes on Display:
- Consult the detailed user manual (physical copy or online) for specific error code meanings and recommended actions.
- Unusual Noises or Smells:
- Immediately disconnect power to the inverter and contact customer support.
Specifications
| Feature | Specification |
|---|---|
| Brand | PowMr |
| Model Number | PWMT-4500-24-230 |
| Rated Output Power | 4500VA / 4500W |
| DC Input Voltage | 24 Volts |
| Nominal Output Voltage | 230Vac ±5% |
| Output Frequency | 50Hz/60Hz |
| Electrical Output Waveform | Pure Sine Wave |
| Maximum PV Open Circuit Voltage | 450Vdc |
| PV Array MPPT Voltage Range | 55-450Vdc |
| Max MPPT PV Charging Current | 150A |
| Max PV Input Current | 18A |
| Max PV Array Power | 6000W |
| Display Type | LCD (6.25-inch, touch buttons) |
| Communication Ports | RS232, RS485 |
| Efficiency | Up to 98% |
| Number of Outlets | 1 |
| Recommended Uses For Product | Home |
| Energy Specifications Met | FCC |
Note: Specifications are subject to change without prior notice. Refer to the product label for the most accurate information.
Warranty and Support
The PowMr 4500W Solar Inverter comes with a 1-year warranty from the date of purchase. This warranty covers defects in materials and workmanship under normal use.
For technical support, warranty claims, or further assistance, please contact PowMr customer service through their official website or the retailer where the product was purchased. Please have your model number (PWMT-4500-24-230) and purchase details ready when contacting support.
Application Range
The PowMr 4500W Solar Inverter is versatile and suitable for a wide array of applications, providing reliable power in various settings.
- Outdoors and Camping
- Household power backup
- Photovoltaic Rooftop installations
- RV and Mobile applications
- Yacht and Marine use
- Commercial Electricity solutions
- Emergency Electricity supply
- Solar Light systems
- Agricultural Electricity needs

Image: Visual representation of the inverter's diverse applications, including outdoor, household, rooftop, RV, yacht, commercial, camping, emergency, solar light, and agricultural settings.





