V-TAC VE51280W Wall Mounted Lithium Battery Instruction Manual

V-TAC VE51280W Wall Mounted Lithium Battery

Product Specifications

• Model: VE51280W
• SKU: 11525
• Capacity: 14.33kWh
• Battery Type: Lithium
• Mounting: Wall Mounted

Product Information

The V-TAC Wall Mounted Lithium Battery Model VE51280W is a high-capacity battery suitable for various applications. It provides reliable power storage and can be easily mounted on walls for convenience.

Product Usage Instructions

Installation
Follow these steps to install the battery:

1. Choose a suitable location on the wall for mounting.
2. Securely attach the battery to the wall using the provided mounting hardware.
3. Ensure proper ventilation around the battery for heat dissipation.

Power-On Instructions
To power on the battery:

1. Connect the appropriate cables to the battery terminals.
2. Turn on the power switch located on the battery.

Maintenance
Regular maintenance is essential for optimal performance:

• Inspect the battery periodically for any signs of damage.
• Clean the battery terminals and connections to ensure proper contact.
• Monitor the battery’s charge level and recharge as needed.

FAQ

• How do I check the remaining capacity of the battery?
  You can check the remaining capacity either through the battery’s display panel or by using a compatible monitoring device.

• Can I connect multiple batteries in parallel for increased capacity?
  Yes, you can connect multiple batteries in parallel to increase the overall capacity of your power storage system. Ensure proper connections and balancing for optimal performance.

INTRODUCTION

Thank you for selecting and buying V-TAC Product. V-TAC will serve you the best. Please read these instructions carefully & keep this user manual handy for future reference. If you have any another query, please contact our dealer or local vendor from whom you have purchased the product. They are trained and ready to serve you at the best.

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Foreword

Overview
This user manual mainly introduces product introduction, application description, installation instructions, power-on instructions, maintenance instructions and provides instructions the VES51280W ESS LFP battery pack for technical support engineers, maintenance engineers and users.

Reader
This document is mainly applicable to the following engineers

• Technical Support Engineer
• Installation Personnel
• Maintenance Engineer

Signs
The following signs may appear in this article, and their meanings are as follows.

Safety

Safety Precautions
Before carrying out battery work, you must read carefully the safety precautions and master the correct installation and connection methods of the battery.

• Prohibit to turn it upside down, tilt, or collide.
• Prohibit to short-circuit the positive and negative poles of the battery, otherwise it will cause the battery to be damaged.
• Prohibit to throw the battery pack into a fire source.
• Prohibit to modify the battery, and it is strictly prohibited to immerse the battery in water or other liquids.
• DO NOT place installation tools on the battery during battery installation.
• DO NOT disassemble, squeeze, bend, deform, puncture, or shred the battery without the authorization of authorized dealers.
• DO NOT exceed the temperature range, otherwise it will affect the battery performance and safety.
• The battery circuit must be kept disconnecting status during installation and maintenance operations.
• Check the battery connection end bolts regularly to confirm that the bolts are tight.

Abuse Operation

The battery pack needs to avoid abuse operations under the following (including but not limited to) conditions.

negative poles are connected reversely, the battery will be directly damaged.
External short circuit| If the battery pack is short circuited externally, the battery will be directly damaged.

Series connection application

| The battery pack does not support the application of battery packs in series. If the battery packs are forced to be connected in series, the batteries may be directly damaged, and may even cause fire, explosion and other dangers.

Overview

Product Description

• The VE51280W product use lithium iron phosphate (LFP) as the positive electrode material. It can be widely used in energy storage systems such as residential energy storage, back-up power, and PV self-consumption optimization.
• The battery pack is composed of 16 cells of LFP batteries in series connection, with low self-discharge, high energy density, and no memory effect. This type of battery also has excellent performance in high rate, long cycle life, wide temperature range, and high safety.

Features

• High energy density
  Higher volume ratio energy and weight ratio energy.

• Maintenance-free
  The battery pack is maintenance-free in the process of using, which can save customers’ battery operation, maintenance testing costs and reduce the frequency of on-site replacement.

• Long cycle life
  The battery pack life is 3 times long than the ordinary lead-acid batteries.

• Excellent temperature characteristics
  When charging, the battery working temperature can reach 0°C~ +60°C. (recommended using temperature: +15°C~ + 35°C). When discharging, the battery working temperature can reach -20°C~ +60°C. (recommended using temperature: + 15°C~ + 35°C).

Basic Functions

• Monitor
  The battery system uses a high-performance BMS, it has protection functions such as current, voltage.

• Alarm
  Support abnormal alarms such as overvoltage, under-voltage, overcurrent, short circuit, high and low temperature, battery failure, hardware failure, etc.

• Communication
  Provide 2*RJ45 interfaces, upload alarming and data of batteries through the RS485/CAN communication protocol.

• Parallel connection application
  Max. support 15pcs batteries in parallel connection. (Recommendation: for bettter performance, when the number of batteries exceeds 2pcs, please connect all batteries to the bus-bar.)

• Balance function
  Support the cells balance function.

Application Scenario

• The battery pack is used to provide backup power, load shifting, peaking shaving and can be used for residential energy storage, solar energy storage and other application scenarios.
• The normal working operation diagram of the battery pack can be as shown in the figure below.

Application Description

Parallel Connection Application

• The battery packs support parallel connection, and synchronously increases the backup time or backup power.
• Confirm the consistency between the battery packs, check the SOC and voltage and turn off the batteries before connecting them in parallel.

Low-temperature Application

• Low-temperature Charging
  The battery pack does not support direct charging of the battery below 0°C. When the minimum temperature of the battery is below 0°C, the BMS will cut-off the charging circuit and cannot be charged.

• Low-temperature Discharging
  The battery pack does not support discharge below -20°C. When the minimum temperature of battery is below -20°C, the BMS will cut-off the discharge circuit and cannot discharge.

Low Battery-capacity Storage (SOC <5%)
After the battery pack is power off, there will be BMS static power consumption and self-discharge loss. In actual scenarios, it is necessary to avoid low-battery-pow- er state (SOC≤5%) storage. If it is unavoidable, the longest storage period is 30days @25°C, 15 days@45°C. The battery needs to be recharged in time after storage, otherwise the battery may be damaged due to over-discharge, and the entire battery pack needs to be replaced.
The following conditions may cause the battery pack to be stored in a discharged state:

• After the utility power failure, the line/fault cannot be eliminated in time, and the power supply cannot be restored for a long time.
• After the installation and commissioning work is completed, the utility power is turned off directly, but the battery pack is not powered off, which will cause the battery to enter the low power consumption mode.
• Other reasons cause the battery pack to fail to enter low power consumption normally.

Application of Nearing the Ocean
The atmospheric corrosion environment is defined and classified according to the natural environment state, and the A/B environment is defined as follows:

• environment refers to the ocean or the land near the pollution source, or the environment with simple shelter (such as awning). “Near the ocean” refers to the area 0.5 ~ 3.7km away from the ocean; “Near the pollution source” refers to the area within the following radius: 3.7km from the saltwater lake, 3km from heavy pollution sources such as smelters, coal mines, and thermal power plants, chemical industry, rubber, electroplating, etc. 2km from medium pollution sources such as chemical industry, rubber and electroplating, etc. And 1km from light pollution sources such as food, leather and heating boilers, etc.
• environment. Refers to the environment on land or outside with simple shelter (such as awning) within 500m from the coast, or the environment on the sea.
  NOTE
  The VE51280W has an IP rating of IP65, which allows it to be used in A/B environment. However, for better performance, it is recommended to use an air- conditioning system if possible.

Product Introduction

Dimensions

Panel Introduction
The VE51280W operation panel is shown as follows.

The definition of the VE51280W operation panel is shown as follows.

3

|

COM 1/COM 2

| 2*RJ45 interface for communication:

COM1 for communication with inverter;

COM2 is used for communication between batteries.

4| Battery Output| Battery power terminals
5| GND| Grounding
6| POWER(ON/OFF)| Power switch

The SOC indicator used to identify the current capacity status of the battery. The number of blinking indicators corresponds to different remaining capacity. The  specific meaning is shown as follows.

The corresponding relationship between operation status and indicator operation status is shown as follows.

ADC Fault、Reverse Connection Fault）

Keep Off| –| Standby/Sleep

PIN Definition
VE51280W has 2 communication interfaces: COM1 and COM2, the PIN definition of COM ports are shown as follows.

Installation

Precautions for Installation

• Light intensity is required near the installation location.
• Comply with the safety operation technical regulations when lifting and handling heavy objects.
• Equipment and tools must be complete, intact, and reliable. It is strictly
• prohibited to use tools with cracks, burrs, loose handles, etc., that do not meet the safety standards.
• Installation operations must be guided by qualified engineers.
• During installation, two people must work together, one operating and the other inspecting.
• The original cable connection and operation process shall not change without the authorization of the company’s consent.

Installation Preparation

Tools Preparation
ATTENTION
Use insulated tools to avoid electric shock. If you use tools without insulation protection, you need to wrap the exposed metal parts with insulation tape for insulation treatment.
The following table describes the tools and meters that may be used before installation.

Packing List

Unpacking and Inspection

• After receiving the goods on-site, please check whether the packing box is intact and inspect the goods in time. If the packing box is slightly damaged, please sign the cargo list to confirm receipt and indicate the extent of the damage. If the damage of the packing box is serious, please refuse to sign.
• Please carry out an unpacking inspection after receiving all the goods. If users find that the received goods do not match the packing list, please contact Vtac as soon as possible.

Installation

• Step 1. Place the battery to a flat surface.
  NOTE

  • Please place the VE51280W battery on a flat surface, ensuring there is adequate space on both sides of the battery (recommended to be greater than 200mm).
  • If possible, the installation site should be as spacious and ventilated as possible. If the site is small and confined, please configure auxiliary heat dissipation equipment.
    To ensure more stable installation, please mount the battery to the wall before use.

• Step 2. Fix the 2pcs brackets to the battery.

  • Step 2.1. Remove the screws from the back of the battery.
  • Step 2.2. Take out the 2pcs brackets from the battery package.
  • Step 2.3. Use the removed screws (Step 2.1) to fix the brackets to the back of the battery.

• Step 3. Fix the 2pcs* ‘Fixing screws’ on the wall.

Cable Connection

Power Cable Connection
NOTE
Please contact Vtac or the supplier to purchase the following cables. They are maybe not included in the battery box and can be obtained in the Master/Slave Cable Kit provided by Vtac or the suppliers.

How to use the touch-safe power cable connectors

• Press the unlock on the power cable while inserting the power cable into the socket.

• The following is the power cables connection display of the battery to the inverter.

Communication Cable Connection
Locate the direction of the communication cable with the socket and then insert the communication cable to the socket.
NOTE
How to use the communication cable connectors
Open the communication port cover, align it with the corresponding socket, and insert it.

120 Resistor Connection
To ensure stable communication with the inverter when using more than two batteries in parallel, follow these steps:

• Step 1. Take out a 1202 resistor from the ‘Slave Battery Kit’.
• Step 2. Insert the 120S resistor into the ‘COM 2’ port of the last VE51280W.

Grounding Cable Connection
Connect the grounding cable to the ground.

Parallel Connection

If you will install less than 2pcs batteries (Battery quantity≤2), please refer to the following wiring configuration.

2 pcs

| Master Cable Kit 1 set
Slave Cable Kit 1 set

If you will install more than 2pcs batteries (No more than 15pcs), you will have the following two system wiring options.

Option 1. Connect all batteries to the bus bar.
NOTE

• For this wiring solution, you will need to prepare bus bars and power cables to connect the bus bars to the inverter in addition. You can either purchase them independently or obtain them from Vtac or the supplier.
• In this wiring solution, the Max. output current of the system will be 150A* the quantity of batteries in parallel.

Option 2. Connect batteries by ‘hand to hand’ .
NOTE
If you want to use this wiring method, please note that the Max. output current of the inverter is set in advance to 200A. To avoid damaging to the BMS

Slave Cable Kit 2 set
4 pcs| Master Cable Kit 2 set
Slave Cable Kit * 3 set
…| …

N pcs (5sN<15)

| Master Cable Kit 2 set
Slave Cable Kit (N-1) set (5sN<15)
…| …
15 pcs| Master Cable Kit 2 set
Slave Cable Kit 14 set

Make Your System Run

ATTENTION
Please strictly follow the steps below for check and operation. Vtac will not be responsible for any issues caused by improper operation.

Parameter Setting

NOTE

• The setting of different inverters will be different.
• Make sure the inverter/charger is powered on before powering on the battery.
• Must not change the parameters casually in the site.

Check before Running

• Step 1. Check whether the cables are connected correctly.
• Step 2. Check whether the batteries are grounded.
• Step 3. Check these following status of switchs.
  • The power switch of the battery should be off.
  • The DC switch of the inverter should be off.
  • The circuit breaker from the inverter to the grid should be off.

Power-on

• Step 4. Turn on the DC switch of inverter.
  • Turn on the switch between the inverter and grid.
  • Turn on the circuit breaker between the inverter and battery (if any).
• Step 5. Turn on the power switch of battery. And waiting for the Run/Alarm indicator lights from green blinking into green, means power on successfully!

If you want to Power off your system
If you need to shut down the system for some reason, please refer to the following steps.

• Step 1. Turn off the inverter first.
• Step 2. Turn off the battery then.

Shipment & Maintenance & Storage

Shipment
It is suitable for the transportation of vehicles, ships and airplanes. During transportation, shading, sun protection and civilized loading and unloading should be performed. The box containing the product is allowed to be transported by any means of transportation. In the process of loading and unloading, the battery should be handled with care to prevent falling, rolling, and heavy pressure. Avoid direct rain and snow and mechanical impact during transportation.
And here is the suggestion for the initial SOC before shipment by different transportation:

• Airplane:30%~40%
• Sea:50% ~60%
• Vehicle:50% ~60%
  NOTE
  Whether the loading SOC status of the battery is allowed, you need to consult the relevant government transportation department.

Maintenance

Battery Maintenance Considerations
When maintaining the battery, it is required to use insulated tools or wrap the tools in insulation.

• DO NOT place any debris on the top of the battery.
• DO NOT use any organic solvents to clean the battery.
• DO NOT smoke or use naked flames near the battery.
• After the battery is discharged, the battery should be charged in time to avoid affecting the battery life.
• When not using the battery for a long time, please charge the battery to 40% ~ 50% charged state. Long-term storage with low battery may damage the battery.
• All maintenance work must be carried out by professionals.

Routine Maintenance
The staff should perform visual inspection on VE51280W battery according to the inspection plan, please refer to the following table for maintenance.

clean the appearance of the battery pack with a cotton cloth.

The battery pack terminal is damaged, replace the cable.

If the appearance is damaged, leaking or deformed, take a photo and replace the defective battery pack.

Please contact supplier or the authorized dealers in time for other abnormal situations.

 | The terminals are in good condition.

Battery Appearance

| The battery pack shell is intact, and there is no bumps, breaks, or leakage.
 | The appearance of the battery pack does not leak.
 | No deformation or swelling of the shell.
Alarm| No Alarm.| Find the solution as per alarm information.

NOTE
Suggested routine maintenance for every three-month.

(Suggested) Complete Cycle

|

Have a complete charge & discharge cycleunder the equipment no

lack of power.

| Check whether happens alarm action, and please check with the alarm list.

Please contact with supplier or the authorized dealers if the alarm still exists.

Cables

| There is no aging of the connecting wire and no cracking of the insulation layer.

The bolts at the cable connection are not loose.

|

Replace the faulty connection. Fastening bolts.

Battery Storage

• The recommended storage temperature is 15°C ~ 35°C.
• Battery performance degradation after long-term storage, please shorten shelf time as possible as you can.
• Recharge charge before using to recover capacity loss of self-discharge during storage and transport.
• Storage battery should be at 40%-50% SOC when the battery is not used for a long time.
• Storage battery over 40°C or under 0°C will reduce battery life.
• Storage battery in dry and low temperature, well ventilated place.

If the battery is not used for a long time, the battery must be charged at regular intervals. The charging requirements are as follows:

SOC

3.Charge by 0.2C to 40%~50% SOC

0C~20C or 30C~40C

|

Each 3 months

Trouble Shooting

Please refer to the table below to deal with common faults：

The indicator does not flash

| l The power cable of the battery pack is not properly connected.

l The power switch is off.

l The BMS is in a sleep state.

l BMS is damaged.

| l Reconnect the power cable of the battery pack.

l Turn on the power switch.

l Charge the battery pack.

l Replace BMS.

Unable to discharge

|

l The terminal of the battery pack is damaged.

l BMS communication failure.

l The power switch is off.

| l Replace the battery pack wiring terminals.

l Reconnect the communication line between the BMS and the battery pack. If the communication cable is damaged, replace the communication cable.

l Turn on the power switch.

Unable to charge

|

l The charger is malfunctioning.

l The terminal of the battery pack is damaged.

l BMS communication failure.

l The power switch is off.

| l Replace the charger.

l Replace the battery pack wiring terminals.

l Reconnect the communication line between the BMS and the battery pack. If the communication cable is damaged, replace the communication cable.

l Turn on the power switch.

Communication fail

| l The power switch is off.

l The BMS is in a sleep status.

l The communication cable is

damage.

| l Turn on the power switch.

l Charge the battery pack.

l Replace the network cable.

Inaccurate voltage display

| l The voltage sampling line is damaged.

l BMS is damaged.

| l Replace the voltage sampling line.

l Replace BMS.

Low capacity

| l The battery pack has not been maintained for a long time.

l The single battery is damaged.

l Inaccurate voltage sampling.

| l Use an equalizer to maintain the battery pack.

l Replace the damaged single battery.

l Replace the electrical sampling line or replace

the BMS.

Low cell voltage

| l The battery pack has not been maintained for a long time.

l The single battery is damaged.

l Inaccurate voltage sampling.

| l Use an equalizer to maintain the battery pack.

l Replace the damaged single battery.

l Replace the electrical sampling line or replace

the BMS.

Warranty

Except for the following and the conditions specified in the contract, you can go to the supplier or the authorized dealers for reasonable warranty and maintenance.

1. Failure of equipment caused by unauthorized disassembly and maintenance operations without the supplier or the authorized dealers is not within the scope of the warranty.
2. Equipment damage caused by negligence during storage and transportation is not covered by the warranty.
3. The damage to the equipment caused by continuous overload work outside the electrical parameters of the equipment is not covered by the warranty.
4. Unauthorized testing of the equipment without the supplier and the authorized dealers will not be covered by the warranty.
5. Non-equipment problems, adverse consequences caused by operation and matching problems are not covered by the warranty.
6. Equipment damage caused by natural forces, force majeure, and uncontrol- lable factors, such as earthquakes, typhoons, tornadoes, volcanic eruptions, floods, lightning, heavy snow, and wars, is not covered by the warranty.
7. If the product serial number is changed, blurred, or torn, it is not covered by the warranty.

IMPORTANT NOTES

• This product contains battery type “Secondary” (rechargeable).
• Electrical and electronic equipment that has become waste is known as old equipment/de-vice. Old devices must not be disposed of with other household waste.
• Owners of old devices at the end of its service life must return the device by taking them to the collection points set up by public waste disposal authorities or distributors. This return does not entail any costs for you.
• Owners of old devices have an obligation to remove accessible batteries / rechargeable batteries as well as non-destructively removable lamps from the old device prior to return. This does not apply if old devices are being prepared for reuse with the participation of a public law firm.
• Battery removal warning: The battery contained in this product must be removed only by professional personnel only. The battery must never be removed by the end user, if not removed correctly it could damage the battery which could cause fire.
• Batteries removed from an old electronic device should be disposed of separately. This return of battery does not entail any costs for you and the user is obliged to return the battery.
• Please make sure that this product is not powered on when removing the battery. Fire hazard! Avoid short-circuiting the contacts of a detached battery. Do not incinerate the battery. Please handle the battery with Caution!
• If electrical appliances or batteries are disposed of in landfills or dumps, hazardous substances can leak into the groundwater and get into the food chain, damaging your health and well-being.
• The symbol of “Crossed rubbish bins “indicates that this product should not be disposed of with other household wastes and must be collected separately from unsorted municipal waste at the end of its service life.
• Please use the link below to view the online directory of the collection and return points: https://www.ear-system.de/ear-verzeichnis/sammel-und-ruecknahmestellen

Abbreviations

• BMS Battery Management System
• D Depth
• H Height
• LCD Liquid Crystal Display
• LFP LiFePO4
• MOSFET Metal-Oxide-Semiconductor Field-Effect Transistor
• NTC Negative Temperature Coefficient
• PC Personal Computer
• PCB Printed Circuit Board
• PCS Power Conversion System
• RTU Remote Terminal Unit
• SOC State of Charge
• W Width

References

• TAC.EU
• ear-system.de/ear-verzeichnis/sammel-und-ruecknahmestellen

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