1. Introduction
The PowMr POW-HVM1K-12V is a multi-function hybrid inverter/charger designed to provide uninterruptible power support. It combines the functions of an inverter, solar charger, and battery charger into a compact and lightweight unit. The comprehensive LCD display allows users to configure various settings, including battery charging current, AC/solar charger priority, and acceptable input voltage ranges, to suit different applications.
2. Package Contents
Upon opening the package, you should find the following items:
- PowMr POW-HVM1K-12V Hybrid Solar Inverter
- User Manual
- Set of U-shaped terminals for battery connection
Video: Unboxing the PowMr POW-HVM1K-12V Hybrid Solar Inverter, showing the inverter, U-shaped terminals, and user manual.
3. Features
- Pure sine wave output for sensitive electronics.
- Configurable input voltage range for home appliances and personal computers via LCD settings.
- Configurable battery charging current based on applications via LCD settings.
- Configurable AC/Solar Charger priority via LCD settings.
- Compatible with utility grid or generator power.
- Auto restart function when AC power is restored.
- Comprehensive protection against overload, over-temperature, and short circuits.
- Smart battery charger design for optimized battery performance.
- Cold start function.
- Optional WIFI/GPRS communication module.
- Compatible with various 12V battery types, including Lithium, LiFePO4, Flooded, Gel, AGM, and user-defined settings.
- Maximum PV Array Power: 600W.
- MPPT Voltage Range: 20-150VDC.
- Maximum Charging Current: 80A (AC + PV combined).
4. Specifications
| Parameter | Value |
|---|---|
| Model | POW-HVM1K-12V |
| Rated Output Power | 1000VA / 1000W |
| Output Voltage Waveform | Pure Sine Wave |
| Output Voltage Regulation | 230Vac ± 5% |
| Output Frequency | 50Hz / 60Hz (self-detection) |
| Peak Efficiency | 94% |
| Overload Protection | 3S @ >150% load; 5S @ 100% ~ 150% load |
| Surge Capacity | 2 * rated power for 5 seconds |
| Charging Algorithm | 3-Step |
| Max AC Charging Current | 40A |
| Max. PV Array Power | 600W |
| PV Array MPPT Voltage Range | 20 ~ 150Vdc |
| Max. PV Array Open Circuit Voltage | 150Vdc |
| Max Solar Charging Current | 40A |
| Max (AC + Solar) Charging Current | 80A |
| Battery Voltage | 12VDC |
| Compatible Battery Types | Lithium, Flooded, Gel, AGM, User Model |
| Application | Home solar system |
| Certification | CE |
| Operating Temperature Range | -10 °C to 50 °C |
| Storage Temperature | -15 °C to 60 °C |
| Humidity | 5% to 95% Relative Humidity (Non-condensing) |
| Dimension (L x W x H) | 286mm x 240mm x 91mm |
| Net Weight | 3.2kg |
5. Product Overview
Familiarize yourself with the components and connections of your inverter.

Figure 1: Front and Rear Panel Overview
Key Components:
- LCD Display
- Status Indicator
- Charging Indicator
- Fault Indicator
- Function Buttons
- Power On/Off Switch
- AC Input
- AC Output
- PV Input
- Battery Input
- Circuit Breaker
- Output Receptacles

Figure 2: Inverter Front View with Key Specifications

Figure 3: Inverter Dimensions and Feature Highlights
6. Setup and Installation
This inverter is designed for 12V energy storage applications and can be integrated into a hybrid power system. Ensure all connections are secure and follow local electrical codes.
6.1 System Configuration
The inverter supports a hybrid power system setup, integrating PV (solar panels), a generator, utility power, a battery bank, and home appliances.

Figure 4: Hybrid Power System Diagram
6.2 Battery Connection
The inverter is compatible with various 12V battery types. Use the provided U-shaped terminals for secure battery connections.

Figure 5: Compatible 12V Battery Types
Supported Battery Types:
- GEL Batteries
- AGM Batteries
- Flooded Batteries
- LiFePO4 Batteries
- Lithium Batteries
- User-Defined Battery Models
6.3 PV Array Connection
The inverter can accommodate up to 600W of photovoltaic arrays with an MPPT voltage range of 20-150VDC.
6.4 AC Input/Output Connection
Connect the AC input from the utility grid or a generator, and connect your home appliances to the AC output. The inverter delivers 230V AC output voltage.
7. Operating Modes
The inverter offers various charging and load output modes to optimize energy usage.

Figure 6: Charging and Output Modes
7.1 Charging Modes
You can configure the inverter to prioritize different power sources for battery charging:
- Solar First: Prioritizes solar power for charging.
- Utility First: Prioritizes utility grid power for charging.
- Solar and Utility: Uses both solar and utility power for charging.
- Only Solar: Charges batteries exclusively from solar power.
7.2 Load Output Working Modes
The inverter can also be configured to prioritize power sources for supplying connected loads:
- Utility First: Prioritizes utility grid power for loads.
- Solar First: Prioritizes solar power for loads.
- SBU First (Solar-Battery-Utility): Prioritizes solar, then battery, then utility for loads.
8. Maintenance
Regular maintenance ensures optimal performance and longevity of your inverter.
- Cleaning: Keep the inverter clean and free from dust. Ensure ventilation openings are not blocked.
- Connection Checks: Periodically inspect all wiring connections (PV, battery, AC input/output) to ensure they are tight and free from corrosion.
- Environmental Conditions: Ensure the inverter is operated within the specified temperature and humidity ranges.
- Battery Health: Monitor your battery's health and charge levels, especially if using lead-acid batteries, to prevent deep discharge or overcharge.
9. Troubleshooting
This section provides general guidance for common issues. For detailed troubleshooting, refer to the full user manual.
9.1 Common Issues
- No Power Output: Check all input power sources (PV, AC utility/generator) and battery connections. Ensure the inverter is switched on.
- Charging Issues: Verify solar panel connections and output, check AC input, and ensure battery settings are correct for your battery type.
- Fault Indicator On: Refer to the LCD display for specific error codes and consult the detailed manual for corresponding solutions. Common faults include overload, over-temperature, or short circuit.

Figure 7: Multi-Protection Functions
10. User Tips
This section would typically include advice and insights from other users or frequently asked questions. As no specific user feedback was provided, here are some general tips:
- Optimal Placement: Install the inverter in a well-ventilated area, away from direct sunlight and moisture, to prevent overheating.
- Battery Matching: Always ensure your battery bank voltage and capacity are appropriate for the inverter's specifications to maximize efficiency and battery lifespan.
- Monitoring: Regularly check the LCD display for system status and any alerts.
11. Warranty and Support
The PowMr POW-HVM1K-12V Hybrid Solar Inverter typically comes with a 1-year warranty. For specific warranty terms, technical support, or service inquiries, please contact the PowMr Factory EU Store or your authorized dealer.

Figure 8: Warranty Information





