Pylon Technologies Co., Ltd.

Introduction

This manual introduces the US2000 (VERSION B) from Pylontech. Please read this manual carefully before installing the battery and follow the instructions during the installation process. For any confusion, please contact Pylontech immediately for advice and clarification.

The US2000 (VERSION B) lithium iron phosphate battery is a new energy storage product developed and produced by Pylontech. It supports reliable power for various types of equipment and systems. The US2000 (VERSION B) is particularly suitable for high-power applications, limited installation spaces, restricted load-bearing capacities, and long cycle life requirements.

The US2000 (VERSION B) features a built-in Battery Management System (BMS) that manages and monitors cell information, including voltage, current, and temperature. The BMS also balances cell charging and discharging to extend cycle life. Multiple batteries can be connected in parallel to expand capacity and power for larger energy storage and longer power support duration needs.

Key Features:

• The entire module is non-toxic, non-polluting, and environmentally friendly.
• Cathode material is made from LiFePO4, offering safety performance and a long cycle life.
• The Battery Management System (BMS) includes protection functions for over-discharge, over-charge, over-current, and high/low temperatures.
• The system automatically manages charge and discharge states and balances current and voltage for each cell.
• Flexible configuration allows multiple battery modules to be connected in parallel for expanding capacity and power.
• An adopted self-cooling mode rapidly reduces system noise.
• The module exhibits low self-discharge, retaining charge for up to 6 months on the shelf, with no memory effect and excellent performance in shallow charge and discharge cycles.
• The working temperature range is from -10℃ to 50℃ (Charging 0~50℃; discharging -10~50℃), providing excellent discharge performance and cycle life.
• The small size and light weight, with a standard 19-inch embedded design, make it convenient for installation and maintenance.

Safety Precautions

Reminded

• It is very important and necessary to read the user manual carefully (included with accessories) before installing or using the battery. Failure to do so or to follow any instructions or warnings in this document can result in electrical shock, serious injury, or death, or can damage the battery, potentially rendering it inoperable.
• If the battery is stored for a long time, it is required to charge it every six months, ensuring the State of Charge (SOC) is no less than 80%.
• The battery needs to be recharged within 12 hours after being fully discharged.
• Do not expose cables externally.
• All battery terminals must be disconnected for maintenance.
• Please contact the supplier within 24 hours if any abnormality is detected.
• Do not use cleaning solvents to clean the battery.
• Do not expose the battery to flammable or harsh chemicals or vapors.
• Do not paint any part of the battery, including internal or external components.
• Do not connect the battery directly with PV solar wiring.
• Warranty claims are excluded for direct or indirect damage caused by the above actions.
• Any foreign object is prohibited from being inserted into any part of the battery.

Warning: Before Connecting

• After unpacking, please check the product and packing list first. If the product is damaged or lacks parts, please contact the local retailer.
• Before installation, ensure the grid power is cut off and the battery is in the turned-off mode.
• Wiring must be correct; do not mistake positive and negative cables, and ensure no short circuit with the external device.
• It is prohibited to connect the battery and AC power directly.
• The embedded BMS in the battery is designed for 48VDC; please DO NOT connect batteries in series.
• The battery system must be well-grounded, and the resistance must be less than 1Ω.
• Please ensure the electrical parameters of the battery system are compatible with related equipment.
• Keep the battery away from water and fire.

In Using

• If the battery system needs to be moved or repaired, the power must be cut off, and the battery must be completely shut down.
• It is prohibited to connect the battery with a different type of battery.
• It is prohibited to operate batteries with a faulty or incompatible inverter.
• It is prohibited to disassemble the battery (e.g., if the QC tab is removed or damaged).
• In case of fire, only a dry powder fire extinguisher can be used; liquid fire extinguishers are prohibited.
• Please do not open, repair, or disassemble the battery except by Pylontech staff or authorized personnel. Pylontech does not undertake any consequences or responsibility due to violations of safety operations or design, production, and equipment safety standards.

Specifications

Equipment Interface Instruction

This section details the front and back panel interface functions.

US2000 (VERSION B) Product Front Interface

The front panel includes the following components:

• Grounding Port: For system grounding.
• Power Switch: Turns the entire battery BMS standby ON/OFF, with no power output.
• RUN: RUN light indicates the Power Switch is ON, and the BMS has electricity (no output power).
• Start Button: Starts the battery module, making it ready for power output.
• ADD Switch (5): Four ADD switches are used to define different address codes for each battery module when multiple modules are cascaded, supporting up to 8 addresses. If all battery cable connections are correct, the ADD switches will distribute addresses automatically and do not require manual setting.
• Console: Console Communication Terminal (RJ11 port) uses RS232 protocol for manufacturer or professional engineers to debug or service.
• CAN: CAN Communication Terminal (RJ45 port) uses CAN protocol for outputting battery information.
• RS485: RS485 Communication Terminal (RJ45 port) uses RS485 protocol for outputting battery information.
• Link Port 0, 1: Communication Terminals (RJ45 ports) use RS485 protocol for communication between multiple parallel batteries.
• Dry Contact Terminal: Provides 1 way input and 3 ways output for dry contact signals.

LED Status Indicators

• RUN Lamp: Green, solid light when charging, flashes when discharging.
• ALM Lamp: Red, flashes during an alarm and solid bright if there is equipment failure or protection.
• Battery Capacity Indicator: 6 green lamps, each representing 16.6% of capacity.

LED Indicators Instructions

Note on Flashing Instructions: Flash 1 - light 0.25s / off 3.75s; Flash 2 - 0.5s light / 0.5s off; Flash 3 - 0.5s light / 1.5s off.

RJ45 Port Pin Definition

RJ11 Port Pin Definition

Power Terminals

Power cable terminals have two pairs with the same function: one connects to equipment, and the other is for paralleling to another battery module for capacity expansion. For each single module, each terminal can achieve charging and discharging functions. Power cables use water-proofed AMPHENOL connectors. It is essential to keep pressing the [Lock Button] while pulling out the power plug.

BMS Function

Safe Handling of Lithium Batteries Guide

Schematic Diagram of Solution

The system diagram illustrates the connection between a PV Array, Inverter, Battery Module, Local Load, and the Public Grid.

Explanation of Symbol

[Danger: High Voltage] symbol indicates high voltage inside.

Safety Warnings:

• Do not disconnect, disassemble, or repair by yourself.
• Do not drop, deform, impact, cut, or spear with a sharp object.
• Do not place near open flame or incinerate.
• Do not sit or put heavy things on the battery.
• Keep away from moisture or liquid.
• Keep out of reach of children, animals, or insects.
• Contact the supplier within 24 hours if anything is wrong.

Emergency Situations:

• If leaking, fire, wet, or damaged, switch off the breaker and get away from the battery. Do not touch the leaking liquid.

Tools Required for Installation

• Wire cutter
• Crimping Modular Plier
• Screw Driver

Note: Use properly insulated tools to prevent accidental electric shock or short circuits. If insulated tools are not available, cover the entire exposed metal surfaces of the tools, except their tips, with electrical tape.

Recommended Safety Gear

• Insulated gloves
• Safety goggles
• Safety shoes

Accessories

The type and quantity of accessories are subject to the battery packing list.

Accessories include:

• RJ45 Communication Cable
• +/ - Power Cable

Note: Power cables use water-proofed AMPHENOL connectors. It is essential to keep pressing the [Lock Button] while pulling out the power plug.

Installation

Package Items

Unpacking and Check the Packing List:

For battery module package:

• Two power cables and one communication cable per battery package.
• Grounding cable.

For battery system connecting to inverter:

• Two long power cables (current capacity 120A) and one communication cable for each energy storage system.

Note: These three long cables are not included in the battery package but are provided in a separate small cable box. If anything is missed, please contact the dealer.

Installation Location

Ensure the installation location meets the following conditions:

• The area is completely waterproof.
• The floor is flat and level.
• There are no flammable or explosive materials.
• The ambient temperature is within the range of 0°C to 50°C.
• Temperature and humidity are maintained at a constant level.
• There is minimal dust and dirt in the area.

[Warning] If the ambient temperature is outside the operating range, the battery pack will stop operating to protect itself. The optimal temperature range for battery pack operation is 0°C to 50°C. Frequent exposure to harsh temperatures may deteriorate the performance and life of the battery pack.

Installation Steps

Place battery modules into the cabinet and connect the cables.

Cabinet Installation Steps:

1. Put the battery into the cabinet.
2. Drive the 4 screws.
3. Connect the cables between battery modules.
4. Connect the cables to the inverter.

Power On Procedure

Double-check all power and communication cables.

1. Switch Power On: Switch on all battery modules. The green RUN LED light should illuminate.
2. Master/Slave Configuration: The module with an empty Link Port 0 is the Master Battery Module; others are slaves.
3. Master Battery Power On: Press the red button on the master battery to power on. All battery LED lights will illuminate one by one, starting from the master battery.

If all battery LED lights turn on and then off, it indicates the battery system is functioning correctly.

Installation with Bracket

Bracket Installation:

1. Dismantle the 2 tabs on the battery.
2. Dismantle 8 screws.
3. Set the battery into 2 pcs Phantom Plus from front and back.
4. Push the Phantom Plus to the end of the Stop Edge.

Stacking Batteries:

Aim the 4 pairs of Location Pins and Location Holes to stack the batteries together. Secure the 4 agraffes together.

Stacking Configurations:

• Maximum 4 batteries can be stacked athwart (side-by-side).
• One or two batteries can be stacked sidelong (vertically).

Note: Cable connection and battery system start-up procedures are the same as for cabinet installation.

After installation, remember to register online for full warranty at: www.pylontech.com.cn/service/registration

Troubleshooting Steps

Problem Determination Based On:

1. Whether the battery can turn on or not.
2. If the battery is turned on, check if the red light is off, flashing, or solid.
3. If the red light is off, check whether the battery can charge/discharge.

Preliminary Determination Steps:

1. Battery cannot turn on: All lights are off or not flashing. If the battery external switch is ON, the RUN light is flashing, and the external power supply voltage is 48V or more, but the battery still fails to turn on, please contact Pylontech.
2. Battery can turn on, but red light is lit, and it cannot charge or discharge: If the red light is lit, it indicates an abnormal system. Check the following values:
   • Temperature: If the temperature is above 50°C or below -10°C, the battery may not work. Solution: Move the battery to the normal operating temperature range of -10°C to 50°C.
   • Current: If the current exceeds 100A, battery protection will activate. Solution: Check if the current is too high and adjust settings on the power supply side if necessary.
   • High Voltage: If the charging voltage is above 54V, battery protection will activate. Solution: Check if the voltage is too high and adjust settings on the power supply side if necessary.
   • Low Voltage: When the battery discharges to 44.5V or less, battery protection will activate. Solution: Charge the battery for some time until the red light turns off.

If the fault cannot be located after checking the above four points, turn off the battery and seek repair.

Emergency Situations

1. Leaking Batteries

If the battery pack leaks electrolyte, avoid contact with the leaking liquid or gas. If exposed to the leaked substance, immediately perform the following actions:

• Inhalation: Evacuate the contaminated area and seek medical attention.
• Contact with eyes: Rinse eyes with flowing water for 15 minutes and seek medical attention.
• Contact with skin: Wash the affected area thoroughly with soap and water, and seek medical attention.
• Ingestion: Induce vomiting and seek medical attention.

2. Fire

NO WATER! Only dry powder fire extinguishers can be used. If possible, move the battery pack to a safe area before it catches fire.

3. Wet Batteries

If the battery pack is wet or submerged in water, do not allow people to access it, and then contact Pylontech or an authorized dealer for technical support.

4. Damaged Batteries

Damaged batteries are dangerous and must be handled with the utmost care. They are not fit for use and may pose a danger to people or property. If the battery pack appears to be damaged, pack it in its original container and return it to Pylontech or an authorized dealer.

Note: Damaged batteries may leak electrolyte or produce flammable gas. If such damage occurs, please contact Pylontech at service@pylontech.com.cn.