Dyness B3 ESS Unit Lithium Battery 3.6kWh 48V

Statement of Law

Copyright of this document belongs to Daqin New Energy Tech (Taizhou) Co., Ltd.

No part of this documentation maybe excerpted, reproduced, translated, annotated or duplicated in any form or by any means without the prior written permission of Daqin New Energy Tech (Taizhou) Co., Ltd. All Rights Reserved.

This product complies with the design requirements of environmental protection and personal safety. The storage, use and disposal of the products shall be carried out in accordance with the product manual, relevant contract or relevant laws and regulations. Customer can check the related information on the website of Daqin New Energy Tech (Taizhou) Co., Ltd when the product or technology is updated.
Web URL：http://www.dyness-tech.com.cn
Please note that the product can be modified without prior notice.

Revision   History

Revision NO.

|

Revision Date

|

Revision Reason

---|---|---

1.0

|

2019.04.24

|

1. First Published

1.1

|

2019.06.24

|

1. System adds DIP switch
2. Renamed B4874 to B3

1.2

|

2019.07.29

|

1. Update the cable specification

1.3

| 2020.06.28|

1. Add battery parameter settings on the inverter.
2. Add register on the website after installation.

1.4

|

2020.09.27

|

1. Add new inverters in DIP switch description

1.5

|

2021.01.10

|

1. Update the design

1.6

|

2021.03.24

|

1. Update the description of the DIP setting 2.Delete the description of the non-DIP model

1.7

|

2021.09.06

|

1. Update the size of new B3
2. Power cable is changed to optional3.Update charge current limit value to 1A in protection mode.
3. Update DIP switch description.

Safety Precautions maintenance instructions

Warning

• Please do not put the battery into water or fire, in case of explosion or any other situation that might endanger your life.
• Please connect wires properly while installation, do not reverse connect.
• To avoid short circuit, please do not connect positive and negative poles with conductor on the same device.
• Please avoid any form of damage to battery, especially stab, hit, trample or strike.
• Please shut off the power completely when removing the device or reconnecting wires during the daily use or it could cause the danger of electric shock.
• Please use dry powder extinguisher to put out the flame when encountering a fire hazard, liquid extinguisher could result in the risk of explosion.
• For your safety, please do not arbitrarily dismantle any component in any circumstances.
  The maintenance must be implemented by authorized technical personnel or our company’s technical support. Device breakdown due to unauthorized operation will not be covered under warranty.

Caution

• Our product have been strictly inspected before shipment. Please contact us if you find any abnormal phenomena such as device outer case bulging.
• The product shall be grounded properly before use in order to ensure your safety.
• To assure the proper use please make sure parameters among the relevant device are compatible and matched.
• Please do not mixed-use batteries from different manufacturers, different types and models, as well as old and new together.
• Ambient and storage method could impact the product life span, please comply with the operation environment instruction to ensure device works in proper condition.
• For long-term storage, the battery should be recharged once every 6 months, and the amount of electric charge shall exceed 80% of the rated capacity.
• Please charge the battery in 18 hours after it fully discharged or over-discharging protection mode is activated.
• Formula of theoretical standby time: T=C/I (T is standby time, C is battery capacity, I is total current of all loads)

Preface

Manual declaration

B3 lithium iron phosphate battery energy storage system can provide energy storage for photovoltaic power generation users through parallel combination. Our product can store extra electricity into battery from photovoltaic power generation system in daytime and supply stable power to user’s equipment as power backup at nighttime or any time when needed. It can improve the efficiency of photovoltaic power generation and increase the electric power efficiency by peak load shifting.

This user manual details the basic structure, parameters, basic procedures and methods of installation and operation and maintenance of the equipment.

Introduction

Brief Introduction

B3 lithium iron phosphate battery system is a standard battery system unit, customers can choose a certain number of B3 according to their needs, by connecting parallel to form a larger capacity battery pack, to meet the user’s long-term power supply needs. The product is
especially suitable for energy storage applications with high operating temperatures, limited installation space, long power backup time and long service life.

Product Properties

B3 energy storage product’s positive electrode materials are lithium iron phosphate, battery cells are managed effectively by BMS with better performance, the system’s features as below:

• Comply with European ROHS, Certified SGS, employ non-toxic, non-pollution environment friendly battery.
• Anode materials are lithium iron phosphate (LiFePO4), safer with longer life span.
• Carries battery management system with better performance, possesses protection function like over-discharge, over-charge, over-current, abnormal temperature.
• Self-management on charging and discharging, Single core balancing function.
• Intelligent design configures integrated inspection module.
• Flexible configurations allow parallel of multi battery for longer standby time.
• Self-ventilation with lower system noise.
• Less battery self-discharge, then recharging period can be up to 10 months during the storage.
• No memory effect so that battery can be charged and discharged shallowly.
• With wide range of temperature for working environment, -20℃~ +55 ℃, circulation span and discharging performance are well under high temperature.
• Less volume, lighter weight.

Product identity definition

Battery voltage is higher than safe voltage, direct contact with electric shock hazard.

Be careful with your actions and be aware of the dangers.
Read the user manual before using.
The scrapped battery cannot be put into the garbage can and must be professionally recycled.
After the battery life is terminated, the battery can continue to be used after it recycled by the professional recycling organization and do not discard it at will.
This battery product meets European directive requirements.
This battery product passed the TUV certification test.
Dangerous goods warning label on the top of the battery module

Product Specification

Size and Weight

Table 2-1 B3 Device size

Product

|

Nominal Voltage

| Nominal Capacity|

Dimension

|

Weight

---|---|---|---|---

B3

|

DC48V

|

75Ah

|

480×405×132mm

|

≈32.5kg

Performance Parameter

Table 2-2 B3 performance parameter

Item|

B3Parameter value

---|---
Nominal Voltage (V)|

48

Work Voltage Range (V)|

42~54

Nominal Capacity (Ah)|

75

Nominal Energy (kWh)|

3.6

Recommended Charge/Discharge Current (A)|

37.5

Max. Power Charge/Discharge Current (A)|

75

Peak Power Charge/Discharge Current (A)|

100 (15S)

Charge Voltage (Vdc)|

53.5

Interface Definition

This section elaborates the interface functions of the front interface of the device.

Table 2-3 Interface Definition

Item

|

Name

|

Definition

---|---|---
1|

Powerswitch

| OFF/ON, remains ‘ON when using
2|

Positivesocket

| Battery outputor parallel positive line
3|

ADD

| DIP switch
4|

SW (battery wake/sleep Switch)

| When power switch is in ‘ON’, long pressing SW for 3s to enable the battery for switch-on ,then switch on the DC breaker between the battery with inverter .If you need to shut down the system, firstly swicth off the DC breaker between the battery with the inverter, then press SW for 3s and switch the power button to “OFF”.
5|

SOC

| Green light, showing battery capacity
6|

ALM

| Red lights, flash when warming, always on when Protection. When the condition of triggering protection is removed, the battery can recover automatically
7|

RUN

| Green light, flashing when standby, always on when discharge, flash when charging
8|

CAN/485

| Communication Port Communication (factory default CAN communication)
9|

DRY CONTACT

| /
10|

Negative socket

| Battery output or parallel negative line
11|

Grounding

| Shell ground connection
12|

COM

| Communication port, support RS232

DIP switch definition and description

Table 2-4 Interface Definition

DIP switch position (master communication protocol and baud rate selection)

1

|

2

|

3

|

4

Define different protocols ； Distinguish between master and slave

| OFF：CAN: 500K,485: 9600
ON：CAN: 250K,485: 115200

DIP switch description:

When the batteries are connected in parallel, the master communicates with the slaves through the CAN interface. The master summarizes the information of the entire battery system and communicates with the inverter through CAN or 485.

1. If the master is the latest B3 battery with DIP switch:

2. The communication cable from the master CAN IN to the inverter comm port should be the correct one.

3. When the battery works with GOODWE、Solis、LUX、Sofar、DEYE、VICTRON、 IMEON、Sungrow、SMA、RENAC、DELIOS、SAJ(CAN Comm) ,before starting the battery, you need put the master DIP switch “# 3” to the “ON” position (to the top), then turn on the batteries.
   Master Setting 1
   

4. If the battery communicates with the Axpert-king/VMIII/MAX,Infinisolar,Growatt
   SPH/SPA(CAN comm)、GMDE, turn the master DIP switch “#2” to “ON” position.
   Master Setting 2
   

5. If the battery communicates with the Growatt SPF HVM-P/ES/WPV by RS485 comm, turn the master DIP switch “#2” and “#3” to “ON”.
   Master Setting 3
   

6. If the battery communicates with the Schneider Conext Series, turn the master DIP switch “#1” and “#3” to “ON”.
   Master Setting 4
   

7. When you setup the master DIP as setting 1~4,all the slaves keep the DIP 0000,no need change.

8.  If the energy storage system has only one B3, it is the master itself, and still follow the above steps.

Note: For more information of matching inverter brands, please subject to the latest document. <The list of compatibility between Dyness ESS and Inverters >.

Below is pin Definition of B3

Foot position

|

Color

|

Definition

---|---|---
PIN1|

Orange/white

| 485B
PIN2|

Orange

| 485A
PIN3|

Green/white

| GND
PIN4|

Blue

| CANH
PIN5|

Blue/white

| CANL
PIN6|

Green

| Reserve
PIN7|

Brown/white

| XIN
PIN8|

Brown

| Reserve
PIN9|

Orange/white

| Reserve
PIN10|

Orange

| Reserve
PIN11|

Green/white

| GND
PIN12|

Blue

| CANH
PIN13|

Blue/white

| CANL
PIN14|

Green

| Reserve
PIN15|

Brown/white

| XOUT
PIN16|

Brown

| Reserve

The Pin definition of COM port

Reserve

PIN2|

GND

PIN3|

TXD

PIN4|

RXD

PIN5|

GND

PIN6|

Reserve

Note: Please pay attention of the communication com definition of inverter ,in order to avoid   voltage in the port to affect communication.

status indicators of B3

Battery Status

|

SOC

|

LED1

|

LED2

|

LED3

|

LED4

|

LED5

|

ALM

|

RUN

---|---|---|---|---|---|---|---|---
Shutdown| /|

off

|

off

|

off

|

off

|

off

|

off

|

off

Standby|

80%＜SOC≤100%

|

●

|

●

|

●

|

●

|

●

|

off

| Flashing

60%＜SOC≤80%

|

●

|

●

|

●

|

●

|

off

|

off

| Flashing

40%＜SOC≤60%

|

●

|

●

|

●

|

off

|

off

|

off

| Flashing

20%＜SOC≤40%

|

●

| ●|

off

|

off

|

off

|

off

| Flashing

0%＜SOC≤20%

|

●

|

off

|

off

|

off

|

off

|

Flashing

| Flashing

SOC=0

|

off

|

off

|

off

|

off

|

off

| Flashing

/●

|

Flashing

Charging|

SOC=100%

|

●

|

●

|

●

|

●

|

●

|

off

| Flashing
80%＜SOC＜100%|

●

|

●

|

●

| ●| Flashing|

off

| Flashing

60%＜SOC≤80%

|

●

|

●

|

●

| Flashing| off|

off

| Flashing

40%＜SOC≤60%

|

●

|

●

| Flashing| off|

off

|

off

| Flashing

20%＜SOC≤40%

|

●

| Flashing| off|

off

|

off

|

off

| Flashing

0% ≤SOC≤20%

| Flashing| off|

off

|

off

|

off

|

off

| Flashing
Discharging|

80%＜SOC≤100%

|

●

|

●

|

●

|

●

|

●

|

off

|

●

60%＜SOC≤80%

|

●

|

●

|

●

| ●|

off

|

off

|

●

40%＜SOC≤60%

|

●

|

●

|

●

|

off

|

off

|

off

|

●

20%＜SOC≤40%

|

●

|

●

|

off

|

off

|

off

|

off

|

●

0%＜SOC≤20%

|

●

|

off

|

off

|

off

|

off

|

Flashing

|

●

SOC=0

|

off

|

off

|

off

|

off

|

off

| Flashing

/●

|

Flashing/●

A special ALM light flashing state: when the communication between batteries is lost or abnormal, all the lights from SOC to RUN of the master battery will flash   together.

● means green light always on ● means red light always on Flashing: means green light flashing or red light flashing

Battery Management System(BMS)

Voltage Protection

Low Voltage Protection in Discharging：
When any battery cell voltage or total voltage is lower than the rated protection value during discharging, the over-discharging protection is activated, and the battery buzzer makes an alarm sound. Then battery system stops supplying power to the outside. When the voltage of each cell back to rated return range, the protection is over.
Over Voltage Protection in Charging：
Battery will stops charging when total voltage or any battery cell voltage reaches the rated protection value during charging stage. When total voltage or all cell back to rated range, the protection is over.

Current Protection

**Over Current Protection in Charging：**

B3: when the charge current ＞90A, current limit protection mode is activated, current will be limited to 1A,protection is removed after rated time delaying 10S. Circulate like this until the current is lower than 90A.

Over Current Protection in Discharging：
When the discharge current is higher than the protection value, the battery buzzer alarms and the system stops discharging. Protection is released after rated time delaying.

Caution: The buzzer sound alarm setting can be manually turned off on the background software, and the factory default is on.

**Temperature Protection**

**Low/Over temperature protection in charging：**
When battery’s temperature is beyond range of -5 ℃ ~+55 ℃ during charging, temperature protection is activated, device stops charging.The protection is over when temperature back to rated working range.
**Low/Over temperature protection in discharging：**
When battery’s temperature is beyond range of -20 ℃ ~+55 ℃ during discharging, temperature protection is activated, device stops supplying power to the outside. The protection is over when temperature back to rated working range..

Other Protection

**Short Circuit Protection**：
When the battery is activated from the shutdown state, if a short circuit occurs, the system starts short-circuit protection for 60 seconds.
Self-Shutdown：
When device connects no external loads and power supply and no external communication for over 72 hours, device will dormant standby automatically.

Caution

Battery’s maximum discharging current should be more than load’s maximum working current.

Installation and Configuration

Preparation for installation

Safety   Requirement

This system can only be installed by personnel who have been trained in the power supply
system and have sufficient knowledge of the power system. The safety regulations and local safety regulations listed below should always be followed during the installation.

• All circuits connected to this power system with an external voltage of less than 48V must meet the SELV requirements defined in the IEC60950 standard.
• If operating within the power system cabinet, make sure the power system is not charged. Battery devices should also be switched off.
• Distribution cable wiring should be reasonable and has the protective measures to avoid touching these cables while operating power equipment.
• when installing the battery system, must wear the protective items below:

The isolation gloves
Safety goggles
Safety shoes

Environmental requirements

• Working temperature: -20 ℃ ~ +55 ℃
• Charging temperature range is 0℃~+55 ℃,
• Discharging temperature range is -20 ℃ ~+55 ℃
• Storage temperature: -10 ℃ ~ +35 ℃
• Relative humidity: 5% ~ 85%RH
• Elevation: no more than 4000m
• Operating environment: Indoor installation, sites avoid the sun and no wind, no conductive dust and corrosive gas. And the following conditions are met:
• Installation location should be away from the sea to avoid brine and high humidity environment.
• The ground for product arrangement shall be flat and level.
• There is no flammable explosive materials near to the installation site.
• The optimal ambient temperature is 15℃ ~ 30℃.
• Keep away from dust and messy zones.

Tools and data

Tools and meters that may be used are shown in table 3-1. Table 3-1 Tool instrument

Name

Screwdriver（Slotted、Phillips）

|

Multimeter

Torque wrench

|

Clamp current meter

Diagonal pliers

|

Insulation tape

Pointed nose pliers

|

Temperature meter

Pliers to hold the wire

|

Anti-static bracelet

Stripping pliers

|

Cable tie

Electric drill

|

Tape measure

Technical preparation

Electrical interface check

Devices that can be connected directly to the battery can be user equipment, power supplies, or other power supplies.

• Confirm whether the user’s PV power generation equipment, power supply or other power supply equipment has a DC output interface, and measure whether the DC power output voltage meets the voltage range requirements in Table 2-2.

• Confirm that the maximum discharge current capability of the DC power interface of the user’s photovoltaic power generation equipment, power supply or other power supply equipment should be higher than the maximum charging current of the products used in
  Table 2-2. If the maximum discharge capacity of the DC power interface of the user’s photovoltaic power generation equipment is less than the maximum charging current of the products used in Table 2-2, the DC power interface of the user’s photovoltaic power generation equipment shall have a current limiting function to ensure the normal operation of the user’s equipment.

• Verify that the maximum operating current of the battery-powered user equipment (inverter DC input) should be less than the maximum discharge current of the products used in Table 2-2.

The security check

• Firefighting equipment should be provided near the product, such as portable dry powder fire extinguisher.
• Automatic fire fighting system shall be provided for the case where necessary.
• No flammable, explosive and other dangerous materials are placed beside the battery.

Unpacking inspection

• When the equipment arrives at the installation site, loading and unloading should be carried out according to the rules and regulations, to prevent from being exposed to sun and rain.
• Before unpacking, the total number of packages shall be indicated according to the shipping list attached to each package, and the case shall be checked for good condition.
• In the process of unpacking, handle with care and protect the surface coating of the object.
• Open the package, the installation personnel should read the technical documents, verify the list, according to the configuration table and packing list, ensure objects are complete and intact, if the internal packing is damaged, should be examined and recorded in detail.

Packing list is as

follows: Item

|

Specification

|

Quantity

|

Figure

---|---|---|---

Battery-B3

|

48V/75Ah

480×405×132mm

|

1

|

Power cable- positive

|

Red

/25mm2/L2050mm

|

Optional: If you need, please contact the dealer to purchase

|

Power cable- negative

| Black/25mm2/L2050mm| Optional: If you need, please contact the dealer to purchase|

Parallel cable- positive

| Red/25mm2/L215mm|

1

|

Parallel cable- negative

| Black/25mm2/L215mm|

1

|

Communication parallel cable

| Black/L250mm/Double RJ45 plug|

1

|

Communication cable-to inverter

| Black/L2000mm /Double RJ45 plug|

1

|

Ground wire

|

L500mm,4mm²

|

1

|

User Manual

|

B3 User manual

|

1

|

Screw

| Combination screws M6*14|

4

|

Engineering coordination

Attention should be paid to the following items before construction:

• Power line specification.
  The power line specification shall meet the requirements of maximum discharge current for each product.

• Mounting space and bearing capacity.
  Make sure that the battery has enough room to install, and that the battery rack and bracket have enough load capacity.

• Wiring.
  Make sure the power line and ground wire are reasonable. Not easy to short- circuit, water and corrosio.

Equipment installation

Table 3-2 Installation steps

Step1| Installation preparation| Confirm that the ON/OFF switch on the front panel of B3 unit is in the “OFF” state to ensure no live operation.
---|---|---
Step 2| Mechanical installation| 1. Battery placement position determination
2. Battery module installation
Step3| Electrical installation| 1. Ground cable installation
2. Battery module parallel cable installation
3. Parallel communication cable connection
Step4| Battery system self-test| 1. Turn the ON/OFF switch to the “ON” state
2. Press SW button 3S to wake up battery
3. Check the system output voltage and led status
4. Shut down the system
Step5| Connecting inverter| 1. Connect total positive & total negative cable of the battery system to the inverter
2. Battery module total positive cable installation
3. Battery module total negative cable installation
4. Connect the communication cable from the master CAN IN to the inverter
5.Turn on the Power switch and wake up system by SW button
6.Close the DC breaker between inverter and battery
7.Turn on the inverter and check the communication between inverter and battery system

Installation preparation

1. Prepare equipment and tools for installation.
2. Check the B3 unit and confirm that the ON/OFF switch is in the “OFF” state to ensure the device is shut off.

Mechanical installation

Installation method:

The scope of product certification does not extend to third party supplied racks/cabinets.

1. Place the B3 unit on the bracket as shown in the figure and push the device into the cabinet at the installation position. (The cabinet structure in the figure is for reference only).

2. Secure the B3 unit to the cabinet with a nut through the mounting holes top on the hanging ears of the B3 unit.

3. Clearances required around battery, Showns as Figure3-4

Installation method 2: With Simple bracket installation

1. Place the B3 and brackets as shown in the figure3-5, and insert the B3 into the brackets.Use 4 screws to fix the module on the front bracket.

2. Install another pair of bracket on the first one fixed by buckles between them.

3. Insert the second one B3 into the brackets.

4. Stack the required number of battery and bracket combinations as described above, and fasten the top and bottom buckles. Shown as Figure3-8.

5. clearances required around battery, Shown as Figure3-9.

Electrical installation

Statement：For Australian market, installations should be conducted in accordance with AS/NZS 3000 and AS/NZS 5139.

Before connecting the power cables, use multi-meter to measure cable continuity, short circuit, confirm positive and negative, and accurately mark the cable labels.
Measuring methods：

• Power cable check: select the buzzer mode of multimeter and detect the both ends of the same color cable. If the buzzer calls, it means the cable is in good condition.
• Short circuit judgment: choose multi-meter resistor file, probe the same end of positive and negative pole, if the resistor shows infinity, means that the cable is available.
• After visual testing of power line connection, the positive and negative poles of the battery shall be connected respectively to the positive and negative poles of the opposite terminal.
  It is better to add a circuit breaker between the inverter and the battery system. The selection of the circuit breaker requires:

Current: I = Inverter power 45V Voltage: U>60V

For Australian Market, a over-current and isolation device is required between battery system and inverter.

The circuit breaker is installed between the battery module and the inverter, as shown in Figure 3-8:

1. After the whole system connection, set the master DIP mode according to the inverter model firstly, then start the battery.
2. The BAT-INV comms cable is from inverter comm port to master CAN IN port, BAT-BAT cable is from master CAN OUT to slave1 CAN IN,slave1 CAN OUT to slave2 CAN IN…
3. Each pair of power cable,it’s limited continuous current is 120A,so if the inverter Max. work current more than 120A,please add power cable according to the proportion. Note: For more information of matching inverter brands, please subject to the latest document .

Battery parameter settings on the inverter

Max Charging(Bulk) Voltage: 53.5V
Absorption Voltage: 53V
Float Voltage: 52.5V
Shut Down(cut off) Voltage: 47V
Shut Down(cut off) SOC: 20%
Restart Voltage: 49V
Max Charge Current: 35Abattery QTY
Max Discharge Current: 35Abattery QTY

Register on the website after installation

After the battery system installation is completed and the running is normal, you need to log in to the DYNESS official website to register the product installation and use information to make the product warranty effective. Please follow the instructions on the website to register.  http://www .dyness-tech.com → Service → Sign

Use, maintenance and troubleshooting

Battery system usage and operation instructions

After completing the electrical installation, follow these steps to start the battery system.

1.  Refer to the description of the DIP switch of 2.3.1 to prepare the battery module before starting up, then press the ON/OFF button to the ON position, press and hold the SW button for 3 seconds. After the indicator self-test, the RUN indicator will light and the SOC indicator will be on (100% SOC status in the Figure4-1)

Note: If you need to shut down the system, firstly switch off the DC breaker between the battery with the inverter, then press SW for 3s and switch the power button to.

Caution

1. After pressing the power button, if the battery status indicator on the front panel continues to be red, please refer to the “4.2 Alarm description and processing “. If the failure cannot be eliminated, please contact the dealer timely.
2. Use a voltmeter to measure whether the voltage of the circuit breaker battery access terminal is higher than 42V, and check whether the voltage polarity is consistent with the inverter input polarity. If the circuit breaker battery input terminal has a voltage output and is greater than 42V, then the battery begun to work normally.
3. After confirming that the battery output voltage and polarity are correct, turn on the inverter, close the circuit breaker.
4. Check if the indicator of the inverter and battery connection (communication indicator and battery access status indicator) is normal. If it is normal, successfully complete the connection between the battery and the inverter. If the indicator light is abnormal, please refer to the inverter manual for the cause or contact the dealer.

Alarm description and processing

When protection mode is activated or system failure occurred, the alarm signal will be given through the working status indicator on the front panel of the B3. The network management can query the specific alarm categories.  If the fault such as single cell over-voltage, charging over-current, under-voltage protection, high-temp protection and other abnormalities which affects the output, please deal with it according to Table 4-1.

Table 4-1 Main alarm and Protection

Statue

|

Alarm category

|

Alarm indication

|

Processing

---|---|---|---

Charge state

|

Over-current

| RED ,Buzzer start|

Stop charging and find out the cause of the trouble

High temp

|

RED

|

Stop charging

Discharge state

|

Over-current

|

RED Buzzer start

|

Stop discharging and find out the cause of the trouble

High temp|

RED

|

Stop discharging and find out the cause of the trouble

Total voltage under-voltage

| RED Buzzer start|

Start charging

Cell voltage under-voltage

|

RED Buzzer start

| Start charging

Analysis and treatment of common faults

Analysis and treatment of common faults in the Table 4-2:
Table 4-2 Analysis and treatment of common faults.

Storage battery replacement or add more modules
4| The battery can’t be fully charged to 100%| Charging voltage is too low| Adjust charging voltage at 53.5V or 54V
5| The power cable sparks once power on and ALM light RED| Power connection short-circuit| Turn off the battery, check the cause of the short circuit
6| Communication fault| The DIP setting of the master is wrong/ the battery type of the inverter is wrong/
Communication cable used incorrectly/
The communication cable is incorrectly connected at the battery communication port or the inverter communication
port/
The battery firmware version is too low to support the inverter| Check these possible
cause one by one

If you need any technical help or have any question, please contact the dealer in time.

DAQIN NEW ENERGY TECH (TAIZHOU) Co.,LTD
Address: Building 13, Jiangyan Industrial Park,
Sanshui Street, Jiangyan District, Taizhou City,
Jiangsu Province，225500
Email: sales@dyness-tech.com
Website: www.dyness-tech.com

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