BYD BATTERY-BOX PREMIUM QUICK START GUIDE

Valid for HVM-US models: 8.3, 11.0, 13.8, 16.6, 19.3, 22.1

Attention: High Voltage!

This Quick Start Guide provides essential assistance for the installation of the BYD Battery-Box Premium HVM-US. It is a shortened guide and does not replace the comprehensive Operating Manual, which must be read and understood completely before installation. The Operating Manual can be downloaded from www.bydbatterybox.com.

This guide and the procedures described are intended for use by skilled workers only. A skilled worker possesses knowledge of on-grid systems, electrical device installation, associated dangers and risks, mitigation methods, and adheres to this guide, the complete installation manual, and all safety precautions.

To ensure normal operation, download the Be Connect 2.0 app and complete the configuration as per this document. For commissioning or operational errors, consult the Service Guideline and Checklist. If the battery system does not start at all, contact BYD's local after-sales service team within 48 hours to prevent permanent damage.

Do not stack batteries without protective packages during storage or handling, except during installation.

The app "Be Connect 2.0" is available on Google Play and the App Store.

1. Scope of Delivery

Visual representation of items included in the delivery package.

BCU (Battery Control Unit): 1x
Base: 2x
HVM-US module: 2x
Hanger (BCU Part Left): 1x
Hanger (BCU Part Right): 1x
Hanger (Wall Part): 1x
Documents: 1x
M4 Screw: 4x
M6 Bolt and Nut: 2x
M5 Screw: 2x
J M4 Screw: 1x

2. Not Included in Scope of Delivery

Visual representation of items not included but required for installation.

DC Cable (6-16 mm² (9-5 AWG), double insulated): 2x
Expansion Anchor Bolt (M6): 2x
PE with Terminal (terminal 5 mm (13/64 in), cable 10 mm² (7 AWG)): 1x
Cat5 Shield (Metal Shielded RJ45 of Cat5 or higher): 1x
Rigid Conduit (3/4" conduit size punch): 1x

3. Tools

Visual representation of required tools.

Network Wire Clamp
Pen
Phillips Screwdriver Bit
Torque Wrench
Flat-Head Screwdriver
Wire Stripper
Cylinder Screwdriver
Wrench
Tape Measure
Drill

4. Installation Location

Environmental conditions for the installation site.

Maximum Temperature: +50 °C (122 °F)
Minimum Temperature: -10 °C (14 °F)
Relative Humidity (RH): +5 % ~ +95 %

5. Module Parallel Connection Limitation

The BYD Battery-Box Premium HVM-US system supports a maximum of 3 towers in parallel.

6. Installation

Step-by-step visual guide for installing the battery system.

Step 1: Prepare the Base and BCU

Attach the BCU (A) to the Base (B) using M6 Bolts and Nuts (I).

Step 2: Mount Wall Hangers

Secure the Wall Hangers (G) to the wall. Ensure proper wall mounting according to specifications (e.g., WALL mm (in)).

Step 3: Attach BCU Part Hangers

Attach the BCU Part Left (D) and BCU Part Right (E) hangers to the BCU using M5 Screws (H).

Step 4: Mount BCU on Wall Hangers

Place the BCU onto the mounted wall hangers.

Step 5: Install HVM-US Modules

Install the HVM-US modules (C) using M4 Screws (J). The diagram shows two modules being installed.

Step 6: Connect Modules in Series

Connect the battery modules in series as shown in the diagram. The diagram implies internal connections or jumper cables between modules.

Step 7: Connect PE Cable

Connect the PE (Protective Earth) cable using the provided terminal. The diagram shows a terminal with a specific size (e.g., 8 mm, 5.5 Nm torque).

Step 8: Connect DC Cables

Connect the DC cables (K) to the P+ and P- terminals. Ensure double-insulated cables are used with the specified external diameter (4-9 mm) and cross-section area (6-16 mm² / 9-5 AWG). Verify the correct cable cross-section with the inverter manual.

Step 9: Connect Data Cable Between Battery Systems

Connect the Cat5 Shield data cable between battery modules (Master and Slave units) for communication.

Step 10: Connect Data Cable to Inverter

Connect the data cable from the Master battery unit to the inverter.

Step 11: Connect Network Cable

Connect the network cable as indicated.

Step 12: Close the Panel

Ensure the front panel is closed. The battery cannot be turned on if the panel is not closed.

Step 13: Commissioning

Connect to the Battery WiFi to continue. The default password is "BYDB-Box".

Follow the on-screen prompts in the "Be Connect 2.0" app:

Agree to the Privacy Policy.
Start the configuration process.
Connect to the Battery WiFi network (e.g., BYD-XXXX). Note that this network may not have internet access.
Enter the configuration details for the system, inverter, and grid. Refer to the compatible inverter list and the Operating Manual.

The configuration process involves setting the date, time, inverter type, system parameters, and grid settings.

When adding modules, ensure the SOC of the existing tower is similar to the SOC of the extension module (normally about 30%).

7. Connection Diagram

Schematic diagrams illustrating how to connect the battery system.

Single Tower Connection

Diagram shows connections between the Inverter, BCU (labeled P+ P-), and communication ports (Ethernet, CAN/RS485). Includes pinout details for CAN/RS485 ports.

Inverter Side: P+, P-, Ethernet, CAN/RS485.
BCU Side: P+, P-, Ethernet, CAN/RS485 (COM_Parallel IN/OUT).
CAN/RS485 Pinout:
- PIN 1: CAN H
- PIN 2: CAN L
- PIN 3: EN_GND
- PIN 4: EN
- PIN 5: 12V IN
- PIN 6: 12V IN_GND
- PIN 7: RS485B
- PIN 8: RS485A

Three Towers Connection

Diagram shows a Master unit connected to two Slave units. The diagram can be adapted for two towers by ignoring the Slave 1 connections.

Diagram illustrates the Master-Slave communication setup for multiple towers. Cable length up to 20 m (65.62 ft) is indicated.

8. PE and DC Cables Connection

Detailed view of PE and DC cable connections.

PE Connection: Connect the PE cable to the designated terminal. Torque specification: 8 mm, 5.5 Nm (48.68 Ibf·in).

DC Connection: Connect the DC cables (K) to the P+ and P- terminals. Use double-insulated cables with an external diameter of 4-9 mm (5/32-23/64 in) and a cross-section area of 6-16 mm² (9-5 AWG). Ensure the cable cross-section is compatible with the inverter.

9. Connecting the Data Cable to other Battery System(s)

Use a Cat5 or higher shielded cable to connect the Master battery unit to Slave units for inter-system communication.

10. Data Cable Connection to Inverter

Use a Cat5 or higher shielded cable to connect the Master battery unit to the inverter for communication.

11. Connecting the Network

Diagram shows connecting a network cable, likely for internet access or monitoring.

12. Close up

NOTICE: If the panel is not closed, the battery cannot be turned on.

13. Commissioning

This section details the initial setup and configuration process using the "Be Connect 2.0" app.

Connect to Battery WiFi: Connect your device to the battery's WiFi network. The default password is "BYDB-Box".
Download Firmware: The app may prompt for firmware download.
Agree to Privacy Policy: Accept the terms and conditions.
Start Configuration: Initiate the system configuration.
Configure System Settings: Set Date, Time, Inverter type, System parameters, and Grid settings. Refer to the compatible inverter list and Operating Manual for correct settings.

The system configuration is necessary for commissioning. The battery WLAN will automatically shut off after five hours. It can be reactivated by pressing the LED button or restarting the system.

Example configuration details shown: Date: Jul-16, 2021, Time: 17:21, Inverter: Fronius, Model: HVM-US, Quantity of Battery Modules In Parallel: 4.

14. Switch ON/OFF Procedure

Visual guide for switching the battery system ON and OFF.

Switch ON Procedure:

Ensure all connections are secure.
Turn the main DC switch ON (if available).
Turn the main AC switch ON (if available).
The system will initiate. Wait for the status indicators.

Switch OFF Procedure:

Turn the main AC switch OFF (if available).
Turn the main DC switch OFF (if available).
Wait for the system to shut down completely.

The battery WLAN will automatically shut off in five hours. Press the LED button once for approximately one second or restart the system to activate it.

15. Extension

To extend the battery system with new modules:

Preparation: Within 5 days before extension, it is recommended to fully charge the original system to SOC 100% at least once.
Measure New Module Voltage: Measure the voltage (X) of the new battery module.
Determine New Module SOC: Refer to the table below to find the corresponding SOC (Y) for the measured voltage (X).
Match SOC: Charge or discharge the original battery system until its SOC is approximately equal to Y.
Add Module: Connect the new battery module.
Re-configure: Perform the system configuration after adding the new module.

Voltage (X) / V	SOC (Y)
<50.4	0~5%
50.4V < 51.52	5~10%
51.52V < 51.84	10~15%
51.84V < 52.32	15~20%
52.32V < 52.672	20~25%
52.672V < 52.848	25~30%

Table showing voltage ranges and corresponding State of Charge (SOC) for new battery modules during extension.

16. LED Status

Indicator lights on the battery system show its operational status.

LED Pattern	Description
Blinking white and blue alternatively (0.5s ON, 0.5s OFF)	The battery system is initiating.
Solid white (2s ON, 2s OFF)	Idle (the battery system is neither charging nor discharging).
Blinking white slowly (1s ON, 1s OFF)	The battery system is charging.
Blinking white quickly (0.5s ON, 0.5s OFF)	The battery system is discharging.
White Blue (alternating, 1s ON, 1s OFF)	The battery system is discharging, and the SOC is below 15 %.
White Blue (alternating, 1s ON, 2s OFF)	An error has occurred (refer to service guideline and checklist for further details).

Communication Options with Inverters

Details on connecting the battery system to compatible inverters, specifically mentioning Fronius models.

CAN Port (8-pin Connector)

For Fronius Primo Gen24 Plus / Symo Gen24 Plus (option a):

Battery-Box PIN	Fronius
1	CAN H
2	CAN L
3	EN_GND
4	EN
5	12V IN
6	12V IN_GND
7	RS485B
8	RS485A

CAN port pinout for Fronius connection (option a). Cable Length: 20 m.

For Fronius Primo Gen24 Plus / Symo Gen24 Plus (option b):

Battery-Box PIN	Fronius
1	V+
2	MO+
3	MO-
4	SHIELD
5	V+
6	GND
7	MO+
8	MO-

Modbus port pinout for Fronius connection (option b). Cable Length: 20 m.

WLAN Name, Password, and Serial Number

The default WLAN name and password for accessing the battery's configuration interface are provided. The serial number (SN) format is also indicated.

Example: WLAN: BYD-XXXX, PASSWORD: BYDB-Box, SN: P036T020ZXXXXXXXXXX

Contact Information

BYD Global Service

Email: bboxservice@byd.com

Phone: +86 755 89888888-47175

Address: No. 3009, BYD Road, Pingshan, Shenzhen, 518118, P.R. China

Website: www.bydbatterybox.com

US Service

Email: us.homeenergy@byd.com

Phone: 626-491-2333

Address: 888 E Walnut, St. Suite 200A, Pasadena, CA 91101, USA