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VOLTACON Li2021 BATTERY 2.4KWH 48V User Manual
Voltacon Li2021 2.4KWH 48V Battery User Manual
Dear customer,
This is your Li2021 48V50Ah LFP battery battery for home energy storage system.
We provide safe, well-designed and high-performance standard LFP battery pack
for you. The battery pack is compact, easy to install, free of maintenance and
used as the building block of energy storage system by assembling in parallel.
It is widely applied in home applications, small commercial and industrial energy
storage system as well as Telecom stations.
This manual contains all the information necessary to install, use and
maintain the LFP battery. We kindly ask you to read this manual carefully before
using the product.
This manual is meant for the installer and the user of the LFP battery. Only
trained and qualified staff may install and perform maintenance on the LFP
battery.
The boundaries of its use, as described in this manual should be kept in
mind. The LFP battery may not be used in medical or in aviation-related
applications. The LFP battery may not be used for any purposes other than
described in this manual. Using the LFP battery for any other purpose will be
considered improper use and will void the warranty of the product. Voltacon
cannot be held responsible for any damage caused by improper, incorrect or
unwise use of the product. Read and understand this manual completely before
using the product. During the use of the product, user safety should always
be ensured, so installers, users, service personnel and third parties can safely
use the LFP battery.
This is the original manual, keep it in a safe location! Please consult
https://voltaconsolar.com for the latest version of all manuals.
VOLTACON UK LTD.
Add: Burnsall Road Industrial Estate, CV5 6BU, Coventry, West Midlands.
Website: https://voltaconsolar.com
Tel: +44 2477 67 55 75
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Summary of Contents for Voltacon Li2021 48V50Ah LFP
- Page 1 Voltacon Li2021 2.4KWH 48V Battery User Manual Dear customer, This is your Li2021 48V50Ah LFP battery battery for home energy storage system. We provide safe, well-designed and high-performance standard LFP battery pack for you. The battery pack is compact, easy to install, free of maintenance and used as the building block of energy storage system by assembling in parallel.
- Page 2 VOLTACON Li2021 BATTERY 2.4KWH 48V User Manual Used Symbols The following icons will be used throughout the manual: Warning “Warning” indicates a possible hazard which, if not observed, could result in severe personal injury or equipment damage. Caution “Caution” indicates a possible hazard which, if not observed, can result in serious equipment damage.
- Page 3 VOLTACON Li2021 BATTERY 2.4KWH 48V User Manual Before Using Read and understand the following instructions: Warning This equipment may only be installed, operated and maintained by trained and qualified staff. The local safety regulations and relevant operating procedures must be observed during the installation, operation and maintenance of the equipment, otherwise the equipment may be damaged.
- Page 4 9. Do not expose Li-ion battery to he at or fire. In case of fire, please use dry powder fire extinguisher. 10. Do not dismantle any part of the s ystem without contacting Voltacon authorized technical engineers. System failure caused by such will not be covered by the warranty.
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Page 5: Table Of Contents
2 Specifications ..................2 2.1 Product standard configuration ..........3 2.2 List of accessories ..............3 3 Li2021 48V50Ah LFP interface and protection functions....4 3.1 Battery front panel ..............4 3.2 Battery front panel schematic ..........5 3.3 Components ................5 3.4 Battery Management System (BMS)........ - Page 6 VOLTACON Li2021 BATTERY 2.4KWH 48V User Manual 6.4 Installation ................. 13 6.4.1 Install the battery ............13 6.4.2 Connect ground cable ..........13 6.4.3 Connecting the power cable ........14 6.4.4 Connecting communication cables ......16 6.4.5 Activation ............... 17 6.4.6 Power-on test ..............
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Page 7: Product Introduction
VOLTACON Li2021 BATTERY 2.4KWH 48V User Manual 1 Product introduction Li2021 48V50Ah LFP is working as a building block for home energy storage system with a reliable and accurate battery management system. Together with storage inverter, the system can realize the... -
Page 8: Specifications
2 Specifications Table 2-1 Battery Pack Specifications Battery Model Li2021 48V50Ah LFP Chemistry Nominal Voltage Voltage Range 44.5V-53.5V Nominal Capacity 50Ah Nominal Energy 2.4kWh Unit Dimension 440mm* 430mm * 88.5mm (2U) Unit Weight 23kg Standard Charge Current Maximum Charge Current... -
Page 9: Product Standard Configuration
VOLTACON Li2021 BATTERY 2.4KWH 48V User Manual 2.1 Product standard configuration Items Quantity Specifications Pictures Li2021 48V50Ah LFP pack; including BMS, three interfaces (CAN/RS-485/ Li2021 Dry Contact), 2 Link ports, 48V50Ah LED power indicator and insulated coating metal case. Input/output... -
Page 10: Li2021 48V50Ah Lfp Interface And Protection Functions
VOLTACON Li2021 BATTERY 2.4KWH 48V User Manual 3 Li2021 48V50Ah LFP interface and protection functions 3.1 Battery front panel 3.2 Battery front panel schematic ⑧ ⑩ ⑤ ○ ③ ② ⑥ ⑦ ① ④ ⑨ Grounding RS485 POWER(ON/OFF) Link Port 0... -
Page 11: Components
VOLTACON Li2021 BATTERY 2.4KWH 48V User Manual 3.3 Components Name Label Functions description Ground Grounding Power button. When switched to "ON", the system can be activated by the Power button POWER "SW" key or external power supply; when switched to "OFF", the system is off. -
Page 12: Battery Management System (Bms)
Positive input and output interface interface (positive) 3.4 Battery Management System (BMS) Voltacon BMS is widely applied in Telco Station as well as low voltage home ESS in China, Europe, and Australia, etc. The BMS manages and protects the battery system stably and accurately by measuring &... -
Page 13: Operating Environment
VOLTACON Li2021 BATTERY 2.4KWH 48V User Manual string of cell 7) Short-circuit protection 8) Over-current protection during charging 9) Over-current protection during discharging 10) Over-temperature warning, alarms, protection and recovery of cells 11) Low-temperature warning, alarms, protection and recovery of... -
Page 14: Packaging, Transportation, Storage Requirements
VOLTACON Li2021 BATTERY 2.4KWH 48V User Manual direct sunlight, no corrosive gas, no explosive gas, no insulating gas, no insulating conductive dust. 5 Packaging, transportation, storage requirements 5.1 Transportation Always check all applicable local, national, and international regulations before transporting an LFP battery. -
Page 15: Installation And Configuration
VOLTACON Li2021 BATTERY 2.4KWH 48V User Manual See previous storage temperature conditions. The self-discharge of the LFP battery is 1%-2% per month. Keep the battery SOC to 40%-60% during storage. 1. Disconnect the LFP battery from all loads and, if present, the charging device. -
Page 16: Checking The Operating Environment
VOLTACON Li2021 BATTERY 2.4KWH 48V User Manual Before installing or removing the device, make sure that the power system is not powered and that the battery device is turned off. Distribution cabling should be reasonable and with protective measures to avoid being touched during operation. -
Page 17: Technical Preparation
VOLTACON Li2021 BATTERY 2.4KWH 48V User Manual 6.1.4 Technical preparation Electrical interface settings: If the battery is connected to the user device directly, please check: ● Whether the DC charging interface of the energy storage inverter meets the charging voltage and current requirements in “Table 2-1 Battery Pack Specifications”. -
Page 18: The Preparatory Work
2. Ensure the charging voltage of power supply equipment is DC53.5±0.5V 3. All power supply should be off 6.4 Installation 6.4.1 Install the battery The Li2021 48V50Ah LFP can be installed either vertically or horizontally. In this chapter, it’s the main instructions for horizontal installation such... -
Page 19: Connect Ground Cable
VOLTACON Li2021 BATTERY 2.4KWH 48V User Manual as installation in a 19-inch cabinet. Vertical installation is similar. All equipment must be steady during installation. 6.4.2 Connect ground cable Unscrew the screw at the grounding hole on the front panel of the battery, wrap the ground cable around the screw, and tighten with a screwdriver. - Page 20 VOLTACON Li2021 BATTERY 2.4KWH 48V User Manual storage inverter (or the junction box) with a black cable. ● Multiple batteries: the connection between batteries, as well as the connection between the battery and ESS inverter is in parallel. First, connect the two positive terminals of adjacent batteries with the red cable;...
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Page 21: Connecting Communication Cables
VOLTACON Li2021 BATTERY 2.4KWH 48V User Manual output cables can be connected from different batteries. Figure 6-1 Schematic diagram of battery connection 6.4.4 Connecting communication cables Single battery: Choose which port to be inserted according to the communication protocol (RS485/CAN/RS232) between the battery and ESS inverter, then insert the communication cables to the port;... -
Page 22: Activation
VOLTACON Li2021 BATTERY 2.4KWH 48V User Manual cascade mode: one is the host and the rest are the slaves. Please refer to the following picture for the cascade connection. then, insert the communication cable to the port according to the communication protocol between batteries and ESS inverter. -
Page 23: Power-On Test
VOLTACON Li2021 BATTERY 2.4KWH 48V User Manual firmly connected, also make sure there is no short circuit and reverse connection; 2. Turn all battery POWER buttons to “ON”; 3. Single battery: press the SW button of the battery for 1 second. - Page 24 VOLTACON Li2021 BATTERY 2.4KWH 48V User Manual 2) If the battery is fully charged and the battery does not supply power to the load, the battery enters the standby state; 3) If the battery is supplying power to the load, the battery enters a discharging state.
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Page 25: Communication
VOLTACON Li2021 BATTERY 2.4KWH 48V User Manual constantly bright means full, off means Alarm Flash 3 Flash 3 uncharged, and flicker means charging Protection Light OFF Stop discharge, protect start Note: The flashing instructions, flash 1-0.25s light/3.75s off; flash 2- 0.5s light/0.5s off;... -
Page 26: Rs485 Port And Can Port
VOLTACON Li2021 BATTERY 2.4KWH 48V User Manual Default baud rate of RS232 ports: 115200bps. 7.2 RS485 port and CAN port. Table 7-2 RS485 Connector Pin Assignments RJ45 port Pin number Signal RS485A... - Page 27 VOLTACON Li2021 BATTERY 2.4KWH 48V User Manual RS485B Table 7-2 CAN Connector Pin Assignments RJ45port Pin number Signal Default baud rate of CAN and RS-485 port: 115200bps...
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Page 28: Troubleshooting
VOLTACON Li2021 BATTERY 2.4KWH 48V User Manual 8 Troubleshooting Please refer to the troubleshooting methods mentioned below. Please read the “Table 6-3 LED indication” of this manual before troubleshooting to prevent false operations. For example, it doesn’t indicate the battery is faulty if the ALM alarm red light on the front panel is blinking or constantly on. -
Page 29: Unable To Charge
VOLTACON Li2021 BATTERY 2.4KWH 48V User Manual 8.2 Unable to charge Problem Troubleshooting Steps Solution 1. Confirm that the battery is turned on; 2. Check the power cord. Confirm that the power cord is correctly connected and the charging circuit is normal;... -
Page 30: Alm Indicator Is Always On
VOLTACON Li2021 BATTERY 2.4KWH 48V User Manual 8.4 ALM indicator is always on When the ALM indicator is constantly red and the other indicators are off, the battery is in the “Protection” state which is normal. When the condition which triggered protection is released, the battery will automatically return to normal operation.
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