1. Overview
The EPEVER IPower-Plus series inverter is a high-frequency pure sine wave inverter utilizing digital intelligent control technology. This advanced design ensures lower input inrush current, faster dynamic response, enhanced load impact resistance, and more reliable operation. It also supports lithium batteries, making it suitable for a wide range of DC to AC power conversion applications, including RVs, boats, residential systems, and any setting requiring high-quality electrical power.
Key Highlights:
- Pure sine wave output for sensitive electronics.
- Input to output electrical isolation for safety.
- Digital dual closed-loop control of voltage and current.
- Input surge current suppression, ideal for lithium battery systems.
- Output power factor up to 1.
- Simple system wiring and a 180-degree rotatable LCD for flexible viewing.
- Comprehensive input protection: Reverse polarity, Low-voltage, Over-voltage.
- Robust output protection: Overload, Short circuit, Overheating.
- Phone and PC remote control capabilities via RS485 port.
- Includes an extra external switch port.
- Safety (EN/IEC62109) & EMC approved by international standards.
2. Safety Precautions
Please read all instructions and warnings carefully before installation and operation. Failure to follow these instructions may result in electric shock, fire, or severe injury.
- Electrical Safety: Only qualified personnel should install and maintain this inverter. Ensure all wiring is correctly sized and connections are secure to prevent overheating and fire.
- Ventilation: Install the inverter in a well-ventilated area. Do not block the ventilation openings. Maintain adequate clearance around the inverter for proper airflow.
- Environment: Avoid installing the inverter in direct sunlight, near heat sources, or in areas with excessive dust, moisture, or corrosive gases. The enclosure rating is IP20, meaning it is protected against solid objects larger than 12.5mm but not against water.
- Battery Connection: Always connect the battery with correct polarity. Reverse polarity can cause severe damage to the inverter and void the warranty. Use appropriate DC circuit breakers or fuses between the battery and the inverter.
- AC Output: Do not connect the inverter's AC output to a public utility grid. This inverter is designed for off-grid applications only.
- Grounding: Ensure the inverter is properly grounded according to local electrical codes.
- Maintenance: Disconnect all power sources (battery and AC loads) before performing any maintenance or cleaning.
3. Package Contents
Upon unpacking, please verify that all items listed below are included and undamaged. If any items are missing or damaged, contact your supplier immediately.
- EPEVER IPower-Plus Pure Sine Wave Inverter (IP1000-21-Plus)
- User Manual
- Certificate of Quality/Warranty Card

4. Product Features and Components
The EPEVER IPower-Plus inverter is designed for efficiency and ease of use. Below are key views and descriptions of its components.


Key Components:
- LCD Display: Provides real-time operational status, input/output parameters, and error codes. The display is 180° rotatable for optimal viewing angle.
- DC Input Terminals: For connecting to the battery bank. Ensure correct polarity (+/-).
- AC Output Terminals: For connecting to AC loads.
- ON/OFF Switch: Main power control for the inverter.
- RS485 Communication Port: For connecting to a PC or external monitoring devices (e.g., WiFi module for app control).
- USB Output Port: Provides 5VDC/Max.1A for charging small devices (if applicable to model variant).
- Cooling Fans: Integrated fans for thermal management.

5. Setup and Installation
Follow these steps for safe and proper installation of your EPEVER IPower-Plus inverter. Refer to the wiring diagrams for visual guidance.
5.1 Mounting the Inverter
- Choose a dry, well-ventilated location away from flammable materials and direct sunlight.
- Ensure the mounting surface is strong enough to support the inverter's weight (5 KG).
- Allow sufficient clearance around the inverter for cooling (refer to Figure 4.2 for mounting dimensions).
- Mount the inverter securely using appropriate fasteners.
5.2 Wiring Connections
All wiring should be done by a qualified electrician. Ensure all power sources are disconnected before making any connections.
- Battery Connection: Connect the DC input terminals of the inverter to your 24VDC battery bank. Observe correct polarity: positive (+) to positive, negative (-) to negative. Use appropriately sized cables and an external DC fuse or circuit breaker for protection.
- AC Load Connection: Connect your AC loads to the AC output terminals of the inverter. Ensure the total power consumption of your loads does not exceed the inverter's continuous output power (1000W).
- Grounding: Connect the inverter's grounding terminal to an earth ground.
- Optional: Solar Charge Controller Connection: If integrating with a solar charge controller, connect the solar panels to the charge controller, and the charge controller to the battery bank. The inverter then draws power from the battery.

5.3 Communication Connections (Optional)
The inverter supports remote monitoring via its RS485 port.
- PC Monitoring: Connect the RS485 port to a PC using an RS485 to USB adapter. Install the appropriate monitoring software on your PC.
- App Monitoring: Connect the RS485 port to a compatible WiFi or Bluetooth module (sold separately) to enable monitoring via a mobile application.

6. Operation
6.1 Powering On/Off
- Power On: After all connections are secure, switch on the external DC circuit breaker (if installed). Then, press the ON/OFF switch on the inverter. The LCD display will light up, indicating the inverter is starting.
- Power Off: First, disconnect all AC loads from the inverter. Then, press the ON/OFF switch on the inverter. Finally, switch off the external DC circuit breaker.
6.2 LCD Display and Monitoring
The rotatable LCD display provides essential information about the inverter's status and performance:
- Input Voltage: Displays the DC voltage from the battery.
- Output Voltage: Shows the AC output voltage.
- Output Power: Indicates the current AC power being drawn by loads.
- Frequency: Displays the AC output frequency.
- Error Codes: In case of a fault, an error code will be displayed to help with troubleshooting.
You can rotate the LCD display 180 degrees to suit your mounting orientation for better readability.
6.3 Remote Monitoring
If you have connected the RS485 port to a PC or a WiFi/Bluetooth module, you can monitor the inverter's performance and status remotely using the dedicated software or mobile application. This allows for convenient oversight of your power system.
7. Specifications
| Parameter | Value (IP1000-21-Plus) |
|---|---|
| Model | IP1000-21-Plus |
| Continuous Output Power | 1000W |
| Surge Power | 2000W@5S |
| Surge Current when Power On | <100A |
| Output Voltage | 110VAC(±3%); 120VAC(-7%~+3%) |
| Output Frequency | 50/60Hz±0.2% |
| Output Wave | Pure Sine Wave |
| Output Distortion THD | THD≤3% (Resistive load) |
| Load Power Factor | 0.2-1 (Load VA ≤ Continuous output power) |
| Rated Input Voltage | 24VDC |
| Input Voltage Range | 21.60~32.0VDC |
| Rated Output Efficiency | >90.00% |
| Max. Output Efficiency | >92.5% (30% loads) |
| No-Load Current | <0.6A |
| USB Output | 5VDC/Max.1A |
| RS485 Communication Port | 5VDC/ 200mA |
| Dimensions (LxWxH) | 371 × 231.5 × 123 mm |
| Mounting Dimensions | 345 × 145 mm |
| Net Weight | 5 KG |
| Operating Temperature Range | -20℃ ~ +60℃ (Refer to derating curve) |
| Relative Humidity | < 95% (Non-condensing) |
| Enclosure Protection | IP20 |
| Certifications | CE, RoHS |
8. Troubleshooting
This section provides solutions to common issues you might encounter with your EPEVER IPower-Plus inverter. If the problem persists, contact customer support.
| Problem | Possible Cause | Solution |
|---|---|---|
| Inverter does not power on | No DC input power; Loose battery connections; Battery voltage too low; Inverter switch off. | Check battery connections and voltage; Ensure external DC breaker is on; Turn on inverter switch. Charge battery if voltage is low. |
| No AC output | Overload; Short circuit on AC output; Overheating; Inverter in fault mode. | Reduce AC load; Check AC wiring for short circuits; Allow inverter to cool down; Cycle power to reset inverter. |
| Overload alarm/shutdown | Connected loads exceed inverter's capacity. | Disconnect some loads. Ensure total load is within 1000W continuous power. |
| Overheating alarm/shutdown | Poor ventilation; High ambient temperature; Blocked cooling fans. | Ensure adequate ventilation around the inverter; Clean dust from cooling fans; Relocate inverter to a cooler environment if necessary. |
| Low battery voltage alarm/shutdown | Battery charge is low. | Charge the battery bank. Reduce loads to conserve battery power. |
9. Maintenance
Regular maintenance ensures optimal performance and longevity of your inverter.
- Cleaning: Periodically clean the inverter's exterior with a dry cloth. Ensure ventilation openings and cooling fans are free from dust and debris. Do not use liquid cleaners.
- Connection Checks: Annually, inspect all electrical connections (DC input, AC output, grounding) for tightness and corrosion. Tighten any loose connections.
- Environmental Check: Ensure the installation environment remains within specified temperature and humidity ranges and is free from corrosive substances.
- Battery Health: Regularly monitor your battery bank's health and charge level, as a healthy battery is crucial for inverter performance.
10. User Tips
- Monitor Regularly: Utilize the LCD display or remote monitoring features to keep an eye on your system's performance, especially battery voltage and output load. This helps in proactive management and prevents unexpected shutdowns.
- Optimize Ventilation: Even if the inverter is not overheating, ensuring excellent ventilation will prolong its lifespan and maintain efficiency.
- Load Management: Be mindful of the inverter's continuous and surge power ratings. Avoid running high-power appliances simultaneously to prevent overloading.
11. Warranty and Support
11.1 Warranty Information
The EPEVER IP1000-21-Plus inverter comes with a 2-year warranty from the date of purchase. This warranty covers defects in materials and workmanship under normal use and service. Please retain your proof of purchase for warranty claims.
The warranty does not cover damages resulting from:
- Improper installation or wiring.
- Unauthorized modifications or repairs.
- Accidents, abuse, or neglect.
- Operating outside the specified environmental conditions.
- Force majeure events.
11.2 Customer Support
For technical assistance, troubleshooting beyond this manual, or warranty claims, please contact your original point of purchase or the official EPEVER customer support channels. Provide your product model number (IP1000-21-Plus) and serial number (if applicable) when seeking support.