VEVOR 24V Lithium Battery

Product Overview

Standard Parameters

Battery Specifications

Working Environment Temperature

User Guide

Product Appearance Introduction

The battery features M8*14mm Negative and Positive Terminals.

Additional Components: M8(14MM) TERMINAL BOLTS*2

The terminal bolts are used to secure multiple cable lugs to a single battery terminal. The bolts can be replaced with M8 bolts of other lengths based on actual needs.

Important Safety Instructions

• Please keep the battery away from heat sources, sparks, flames, and hazardous chemicals.
• Maintain Adequate Ventilation and Heat Dissipation: Place the battery in a well-ventilated area with sufficient heat dissipation to prevent overheating and damage.
• Size the Battery Cables and Connectors Appropriately: Use high-stranded copper connectors and heavy gauge cables. Ensure identical cable lengths and avoid accidents caused by unsuitable connectors or cables that make the connection a heat source during battery operation.
• Please tighten all cable connections, as loose cable connections can cause terminal meltdown or fire.
• DO NOT puncture, drop, crush, burn, penetrate, shake, or strike the battery. The battery should be securely fastened during handling to prevent impact or dropping.
• It should be safely secured to a solid plane and the cables safely tied to a suitable location to avoid arcing and sparking due to friction.
• DO NOT press it by placing heavy stuff on top of it for long periods, which may damage it due to an internal short circuit.
• DO NOT immerse the battery in water whether the battery is in use or on standby.
• DO NOT open, dismantle, or modify the battery.
• DO NOT touch the exposed electrolyte or powder if the battery casing is damaged. Uncovered electrolyte or powder that has contacted the skin or eyes MUST be flushed out with plenty of clean water immediately. Seek medical attention afterward.
• Avoid Short Circuit: Please use circuit breakers, fuses, or disconnects that have been properly sized by certified electricians, licensed installers, or regional code authorities to protect all the electrical equipment in your system. The battery has a built-in battery management system (BMS) that protects the battery cells from over-charge, over-discharge, and over-current; however, this alone will not protect your system from severe electrical conditions.
• Trained and certified technicians are required for safe and reliable installation. This product manual can only serve as a guideline as it cannot cover all possible scenarios.
• Verify Correct Polarity: Please verify the polarity before connecting the wiring. Reverse polarity can and will destroy the battery and other electrical equipment. Use a multimeter to determine proper polarity.
• Avoid Exposed Metal Terminals or Connectors: The terminals of this battery are always live. Avoid exposed metal terminals or connectors. DO NOT place tools on the terminals or touch them with bare hands. DO NOT short circuit or use outside of specified electrical ratings.

Things to Know Before Using

• When using the battery, please be careful to avoid metal or conductive objects touching the positive and negative poles of the battery at the same time, otherwise it may cause a short circuit.
• Tightly screw in the post bolts. The battery could not be mounted upside down. Having loose battery terminals will cause the terminals to build up heat, resulting in damage to the battery.
• This battery is not intended to be used to start any devices; please DO NOT use it as a starting battery.

Suggestions for Long-term Storage

• Temperature: The battery can be operated at a temperature of -20°C to 45°C (-4°F to 113°F). Store in a fireproof container and away from children.
• Capacity: For a longer-lasting product, it is best to store your battery at a 50% charge level and recharge every three months if it is not going to be used for a long time. [Calendar emoji] Recharge Every 3 Months [Thermometer emoji] 10°C~35°C

Controller

Recommend Charging Current

Recommend Charging Mode: 25.6V(29.2V)L! (LiFePO4)

Controller Settings: Refer to the below parameters if you need to manually set up your controller. As different types of batteries have different charging modes (refer to Page 04), it is recommended to set only the following parameters for LiFePO4 batteries. The settings for other types of batteries do not apply to LiFePO4 batteries except for the following settings.

Battery Charger

Use 29.2V lithium iron phosphate (LiFePO4) battery charger to maximize the capacity.

Recommend Charging Voltage: Between 28.4V to 29.2V

Tips

1. Connect the charger to the battery before connecting it to the grid power in case of spark. [Plug emoji]
2. It's recommended to disconnect the charger from the battery after fully charging. [Power button emoji]

Series / Parallel Connection

The Premise of Connection

To connect in series or /and parallel, batteries should meet the below conditions:

• a. identical batteries with the same battery capacity (Ah) and BMS (A);
• b. from the same brand (as lithium battery from different brands has their special BMS);
• c. purchased in near time (within one month).

Limitation for Series/Parallel Connection

Support connecting up to 16 identical batteries for up to:

• 2 in series as 48V(51.2V) battery system/
• Four battery packs in parallel, the system capacity can be expanded fourfold.

Series Connection: 48V(51.2V)100Ah

Parallel Connection: 24V(25.6V)400Ah

How to Connect Batteries

Step 1: Wear Insulating Gloves

Wear insulating gloves for protection before connecting. Please pay attention to operation safety in the process of connection. [Glove emoji]

Step 2: Voltage Balancing Before Connection

Below two steps are necessary to reduce the voltage difference between batteries and let the battery system perform the best of it in series or/and in parallel.

• Step 1: Fully charge the batteries separately. (Voltage at rest: >26.6V)
• Step 2: Connect all of the batteries in parallel, and leave them together for 12~24hrs.

They're now ready for the connection.

Step 3: Battery-to-Battery Connection

#1 Connect Batteries in Series

After series connection, the voltage of the battery system will be doubled according to the number of batteries you connect. E.g. If two 24V(25.6V) 100Ah batteries are connected in series, the battery system will be 48V(51.2V)100Ah.

#2 Connect Batteries in Parallel

After parallel connection, the capacity of the battery system will be doubled according to the number of batteries you connect. E. g. If two 24V(25.6V) 100Ah batteries are connected in parallel, the battery system will be 24V(25.6V)200Ah.

#3 Connect Batteries Both in Series & Parallel

Connect in parallel first, then series.

Step 1: Connect the batteries in parallel

Step 2: Connect the paralleled battery systems in series

Step 3: Total Input & Output Connection

Use two copper bars (instead of battery terminals) to connect all the positive and negative output input cables, ensuring that the input & output currents of each battery are balanced. (Not required when connecting batteries origin series.)

It is not recommended to use one terminal as the total positive or negative output input of the battery system as the connected terminals may heat up or even melt if the total output input current of the battery system is too high.

Battery System: 48V(51.2V)400Ah

1. As of 1/3/5/7 is connected in series with + of 2/4/6/8, please do not connect - of 1/3/5/7 with - of load or + of 2/4/6/8 with + of load, otherwise the battery system will fail to connect in series. 2. Please do not connect in reverse order, which may affect the use of the batteries.

Step 5: Rebalancing Every 6 Months

It is recommended to rebalance the battery voltage every six months following Step 2 on Page 13 if you're connecting multiple batteries as a battery system, as there might be voltage differences after six months of the battery system running.

Wiring Diagrams

2P2S Battery System: 48V(51.2V)200Ah

What to do when the battery stop working?

When the battery:

• Can't Work
• Can't be charged
• Vi=oltage<9v

It has 85% chances that BMS has shut it off for protection, and you could try one of below ways to activate the battery.

General Steps

If the BMS has cut off the battery for protection, follow the below steps to activate it.

Step 1: Cut off all the connections from the battery [Power cord emoji]

Step 2: Leave the battery aside for 30mins [Clock emoji]

Then the battery will automatically recover itself to normal voltage (>10V) and can be used after fully charged.

If the battery is unable to recover itself after the above steps, please try activating by ONE OF BELOW TWO METHODS.

After activated (voltage > 10V) and fully charged by the normal charging method, it can be used normally.

Method (1)

Use a charger with a 0V charging function (1) to fully charge the battery. (1) The charger can charge the battery starting from 0V.

Connect the WeChat Applet to the BMS

1) Search for ThereeTeamBMS on WeChat, or scan the QR code below with WeChat.

2) Turn on your phone's Bluetooth and location. [Bluetooth emoji] [Location pin emoji]

3) After opening the Mini Program, open the "menu" bar and click "English" to switch between Chinese and English.

4) Click Device Search, search for the battery icon shown in the figure below, and select Connect. [Search icon emoji]

5) Once connected to Bluetooth, the battery information can be read.

Monolithic Voltage Information

• High Vol: 3098mV
• Low Vol: 2998mV
• AverageVol: 3066mV
• Diff Vol: 100mV

Single Cell Voltage

[1] 2998mv, [2] 3087mv, [3] 3084mv, [4] 3098mv

Battery Temperature Information

• Maximum Temperature: 30.1°C
• Minimum Temperature: 29.9°C
• Environment Temp: 29.9°C
• Mos Temp: 30.1°C

Battery Status Information

• Balance, ChgMosOn, Dsg_OC_1
• swVolDisChg, DsgMosOn, Dsg_OC_2
• ShortCur, IC_OT, Chg_OC
• Heat_OC, Cell_UV, Chg_OT
• OpenWire, Cell_OV, Chg_UT
• Heating, Chg_UT, Dsg_OT

Cell Temperature

• [1] 30.1°C
• [2] 29.8°C

Set the battery capacity

When the default capacity set by the BMS is inconsistent with the actual battery capacity, set the battery capacity in the set capacity input box on the command control page, and then select the following modification configuration, password ZXK.2012.

Calibrate the current

When there is a deviation between the current and the actual current of the applet, you can do current calibration. First, the output of the battery pack is connected to the electronic load, and then the electronic load sets a current, and the actual discharge current is entered in the current calibration input box on the command control page, and then select the following modification configuration, password ZXK.2012.

BMS parameters are modified.

1) On the Command Control page, click BMS Parameter Settings to enter the parameter modification page.

2) After modifying the parameters, select Modify Configuration.

Manufacturer Information

Manufacturer: Shanghaimuxinmuyeyouxiangongsi

Address: Shuangchenglu 803nong11hao1602A-1609shi, baoshanqu, shanghai 200000 CN.

Imported to AUS: SIHAO PTY LTD. 1 ROKEVA STREETEASTWOOD NSW 2122 Australia

Imported to USA: Sanven Technology Ltd. Suite 250, 9166 Anaheim Place, Rancho Cucamonga, CA 91730

UK REP: YH CONSULTING LIMITED. C/O YH Consulting Limited Office 147, Centurion House, London Road, Staines-upon-Thames, Surrey, TW18 4AX

EC REP: E-CrossStu GmbH Mainzer Landstr.69, 60329 Frankfurt am Main.

FCC Statement

This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference in a residential installation. This equipment generates, uses and can radiate radio frequency energy and, if not installed and used in accordance with the instructions, may cause harmful interference to radio communications. However, there is no guarantee that interference will not occur in a particular installation. If this equipment does cause harmful interference to radio or television reception, which can be determined by turning the equipment off and on, the user is encouraged to try to correct the interference by one or more of the following measures:

• Reorient or relocate the receiving antenna.
• Increase the separation between the equipment and receiver.
• Connect the equipment into an outlet on a circuit different from that to which the receiver is connected.
• Consult the dealer or an experienced radio/TV technician for help.

Caution: Any changes or modifications to this device not explicitly approved by manufacturer could void your authority to operate this equipment.

This device complies with part 15 of the FCC Rules. Operation is subject to the following two conditions: (1) This device may not cause harmful interference, and (2) this device must accept any interference received, including interference that may cause undesired operation.

RF Exposure Information

This equipment complies with FCC radiation exposure limits set forth for an uncontrolled environment. This equipment should be installed and operated with minimum distance 20cm between the radiator and your body.

NOTE 2: Any changes or modifications to this unit not expressly approved by the party responsible for compliance could void the user's authority to operate the equipment.