Epever XTRA-N G3/G3 BLE MPPT Solar Charge Controller User Manual

1. Product Overview

The Epever XTRA-N G3/XTRA-N G3 BLE series solar charge controllers are advanced Maximum Power Point Tracking (MPPT) devices designed to optimize power harvesting from solar panels and efficiently charge batteries. These controllers feature a new design concept, with the XTRA-N G3 BLE model including a built-in Bluetooth module for convenient parameter reading and writing via a mobile application.

Utilizing an advanced MPPT control algorithm, these controllers minimize power loss and tracking time, ensuring maximum energy capture under various conditions. They support independent voltage regulation, allowing direct load connection even without a battery, which is particularly beneficial for lithium battery systems by preventing unstable output voltage due to internal battery protection. The low self-consumption design extends system standby time.

Key features include charging power/current limits and automatic power reduction under high temperatures, ensuring system stability even with excess PV modules or in hot environments. With IP33 ingress protection and an isolated RS485 communication port, these controllers offer enhanced reliability and versatility for various applications like RVs, household systems, and monitoring fields.

The controllers employ a three-stage charging mode to prolong battery lifespan and improve performance, complemented by comprehensive electronic protections against overcharge, over-discharge, and reverse polarity for both PV and battery connections, making the solar system more reliable and durable.

2. Key Features

• High-quality components (ST or IR) for extended service life.
• Advanced MPPT technology with ultra-fast tracking speed (up to 99.5% efficiency).
• Maximum DC/DC transfer efficiency up to 98.5%.
• Advanced MPPT control algorithm to minimize the lost rate and lost time.
• Accurate recognition and tracking of multi-peaks maximum power point.
• Wider MPP (maximum power point) running voltage to optimize PV utilization.
• Supports multiple battery types, including lithium batteries.
• Stable self-activation function for lithium batteries.
• Battery voltage parameters can be set directly on the LCD.
• Battery temperature compensation.
• Limits charging power & current to rated values.
• Real-time energy statistics function.
• Automatic charging power reduction for over-temperature conditions.
• Built-in Bluetooth (XTRA-N G3 BLE model) for EPEVER APP control.
• RS485 communication interface with optional 4G or Wi-Fi modules for remote monitoring.
• Parameters can be set via PC software, APP, or remote meter.
• Constant voltage output function.
• Comprehensive electronic protections.
• Multiple load work modes.
• Dustproof and waterproof design with IP33 enclosure.
• Low self-consumption (less than 10mA).
• Operates at full load without charging power reduction within the working temperature range.

3. Setup and Installation

3.1 Unboxing and Inspection

Carefully unpack the Epever XTRA-N G3/G3 BLE MPPT Solar Charge Controller and inspect it for any signs of damage during transit. Ensure all components listed in the packaging are present.

3.2 Mounting the Controller

Mount the controller in a well-ventilated area, away from direct sunlight, high temperatures, and moisture. Ensure there is sufficient clearance around the unit for proper heat dissipation. Use appropriate screws and mounting hardware for secure installation.

Figure 1: Front view of the Epever MPPT Solar Charge Controller.

Figure 2: Angled view of the Epever MPPT Solar Charge Controller, highlighting the terminal connections at the bottom.

Figure 3: Side view of the Epever MPPT Solar Charge Controller.

Figure 4: Bottom view of the Epever MPPT Solar Charge Controller, showing the heat sink and terminal block.

Figure 5: Rear view of the Epever MPPT Solar Charge Controller, showing the mounting points.

3.3 Wiring Connections

Follow the wiring sequence carefully to prevent damage to the controller or system components. Always connect the battery first, then the solar panel, and finally the load.

1. Connect the Battery: Loosen the screws on the battery terminals. Connect the positive and negative battery cables to the corresponding terminals on the controller. Ensure a secure connection.
2. Connect the Solar Panel: Connect the positive and negative solar panel cables to the PV terminals on the controller. Verify correct polarity.
3. Connect the Load (Optional): If using a DC load directly from the controller, connect the load cables to the load terminals.

Important: Ensure all connections are tight and correct polarity is observed to avoid damage.

4. Operating Instructions

4.1 Display and Buttons

The controller features an LCD display and five buttons for navigation and settings:

• PV/+ Button: Navigate forward or increase values.
• BATT/-> Button: Navigate backward or decrease values.
• LOAD/- Button: Access load settings or decrease values.
• SET Button: Enter setting mode or confirm selection.
• ESC Button: Exit current menu or cancel operation.

4.2 Setting Battery Type

It is crucial to set the correct battery type for optimal charging and battery longevity. The controller supports various battery types including Sealed (default), Gel, Flooded, LiFePO4 (LFP15S, LFP8S, LFP4S), and Li(NiCoMn)O2 (LCNM3S, LCNM6S, LCNM7S, LCNM14S, LCNM13S), and User-defined.

1. Step 1: Press the SET button to enter the setting interface.
2. Step 2: Press and hold the BATT/-> button for 5 seconds under the PV generated energy interface. The battery type value will start flashing.
3. Step 3: Use the PV/+ or LOAD/- buttons to cycle through the available battery types (SEL, GEL, FLD, F15, F08, F04, F16, N03, N06, N07, N14, N13, USE).
4. Step 4: Once the desired battery type is displayed, press the SET button to confirm your selection.

Note: If the controller supports 48V system voltage, the battery type will display LiFePO4 F15/F16, and Li(NiCoMn)O2 N13/N14.

Figure 6: Battery Type Selection Flowchart. This diagram illustrates the sequence of battery types available for selection: Sealed (default), Gel, Flooded, various LiFePO4 (LFP) and Li(NiCoMn)O2 (LCNM) configurations, and User-defined.

Special Note for Lithium Batteries:

• When a lithium battery is used, the system voltage cannot be identified automatically.
• When a lithium battery is used, the temperature compensation coefficient must be “0” and cannot be changed.

5. Maintenance

Regular maintenance ensures the longevity and optimal performance of your solar charge controller.

• Monthly: Inspect all wiring connections for tightness and corrosion. Clean the controller's exterior with a dry cloth.
• Quarterly: Check the battery terminals for any signs of sulfation or damage. Ensure proper ventilation around the controller.
• Annually: Verify the solar panel output and battery voltage are within specifications. Check for any loose mounting hardware.

Caution: Before performing any maintenance, disconnect all power sources (solar panel and battery) from the controller.

6. Troubleshooting

7. Specifications

Note: Specifications are for the 20A model. Other models (10A, 30A, 40A) will have different rated charge currents and powers. Refer to the full specification table in the original documentation for details on other models.

8. Warranty and Support

For warranty information, technical support, or further inquiries, please contact the seller or manufacturer directly. Keep your purchase receipt as proof of purchase.

Seller: YiCheng Tech Co., Ltd Store

Contact Information:

• Email: Support@solarepic.com
• Website: www.solarepic.com
• Amazon Store: www.amazon.com/solarepic

You can also find more product information and updates by following SolarEpic on YouTube and Facebook.