Custom OEM Battery Pack Manufacturer: A Complete Procurement Guide

With the rapid growth of electrification in industries such as electric vehicles, AGV/AMR robots, energy storage systems, power tools, medical devices, and smart equipment, more companies are looking for custom OEM battery pack manufacturers instead of purchasing standard batteries.

A reliable OEM battery supplier should provide more than battery cells. They should have the capabilities of battery solution design, BMS development, structural design, certification testing, mass production, and after-sales support.

For global buyers, choosing the wrong battery supplier may lead to delayed projects, failed certifications, quality issues, and supply chain risks.

This guide explains:

• What OEM battery pack manufacturing means
• How to select the right battery supplier
• Custom battery development process
• Key technical specifications to evaluate
• Battery cell, BMS, and structural design requirements
• International certification requirements
• How to evaluate an OEM battery factory

1. What Is an OEM Battery Pack Manufacturer?

An OEM (Original Equipment Manufacturer) battery pack manufacturer designs and produces customized battery solutions according to customer requirements.

Unlike standard battery suppliers, OEM battery manufacturing includes:

✅ Battery cell selection
✅ Battery pack design
✅ Battery Management System (BMS) development
✅ Protection circuit design
✅ Housing and mechanical design
✅ Connector customization
✅ Communication protocol development
✅ Safety testing
✅ Mass production

例如

• AGV robots require 24V/48V/72V high-cycle battery systems
• E-bikes require UL2271 certified lithium batteries
• Energy storage systems require 51.2V LiFePO4 battery packs
• Medical devices require reliable and compact battery solutions

These applications usually require customized battery packs instead of off-the-shelf products.

2. Why Choose OEM Battery Pack Manufacturing?

2.1 Customized Design for Limited Space

Different devices have different internal structures.

OEM battery manufacturers can design battery packs according to:

• Length
• Width
• Height
• Installation method
• Connector position

For example, robot batteries may require:

• Slim design
• Quick replacement structure
• 抗冲击性
• IP65/IP67 waterproof protection

2.2 Matching Specific Performance Requirements

Standard batteries may not meet the requirements of professional equipment.

OEM solutions can customize:

电压选项

常见配置：

• 12V
• 24V
• 36V
• 48V
• 51.2V
• 72V

Capacity Options

例如

• 10 安培
• 20 安培
• 50Ah
• 100Ah+

Discharge Performance

Designed according to application requirements:

• Standard discharge
• High-rate discharge
• High peak current output

2.3 Improving Product Competitiveness

For equipment manufacturers, customized battery solutions provide:

• Product differentiation
• More stable supply chain
• Better user experience
• Higher product value

3. Information Required Before Purchasing OEM Battery Packs

Before contacting an OEM battery supplier, prepare a detailed RFQ (Request for Quotation).

Basic Battery Specifications

Application Information

The supplier needs to understand:

Application Scenario

例如

• AGV 机器人
• AMR robots
• 电动自行车
• 叉车
• 高尔夫球车
• 储能系统

Working Environment

Consider:

• Indoor or outdoor operation
• High temperature conditions
• Low temperature conditions
• Humidity
• Vibration environment

Electrical Requirements

Important parameters include:

• Maximum continuous current
• Peak discharge current
• 充电电流
• Discharge rate
• 通信协议

Advanced BMS systems may support:

• CAN
• RS485
• UART
• Modbus

4. How to Select the Right OEM Battery Supplier?

Price should not be the only factor when selecting a battery manufacturer. A comprehensive evaluation is required.

4.1 Evaluate Factory Manufacturing Capability

A professional OEM battery factory should have:

Battery Cell Testing Capability

包括

• 电压测试
• 内部电阻测试
• 能力测试
• Cell matching and sorting

High-quality battery packs require:

• Consistent voltage
• Consistent internal resistance
• Balanced capacity

Battery Pack Production Capability

Check whether the factory has:

• 自动化装配线
• Laser welding equipment
• Spot welding equipment
• Aging test rooms
• High and low-temperature testing equipment
• 防水测试设备

Quality Management System

Recommended certifications:

• ISO9001
• ISO14001
• IATF16949 (automotive applications)
• Complete quality inspection procedures

4.2 Check R&D Capability

A true OEM battery manufacturer should have professional engineering teams.

Electrical Engineering Team

Responsible for:

• Circuit design
• BMS 开发
• Parameter adjustment

Mechanical Engineering Team

Responsible for:

• CAD design
• Battery housing design
• Waterproof structure design

Testing Team

Responsible for:

• Performance verification
• 安全测试
• Reliability testing

5. OEM Battery Development Process

A complete development process usually includes:

Step 1: Requirement Confirmation

Customer provides:

• Application details
• 电池规格
• Size limitations
• Certification requirements

Step 2: Battery Solution Design

Engineers determine:

• Battery cell model
• Series and parallel configuration
• BMS solution
• Housing structure

例如

48V 20Ah battery pack:

13-series lithium cells:

13S × 3.7V ≈ 48V

Step 3: Prototype Production

Prototype samples are created for:

• Engineering verification
• 功能测试

Testing includes:

• 电压
• 容量
• Discharge performance
• Communication functions

Step 4: Reliability Testing

Electrical Performance Testing

包括

• Charge/discharge testing
• 周期寿命测试
• 能力测试

安全测试

包括

• 过充电保护
• 过放电保护
• 短路保护
• Temperature rise testing

Step 5: Mass Production

Manufacturing process:

细胞分选
↓
Cell assembly
↓
Welding
↓
BMS 安装
↓
Battery pack assembly
↓
老化试验
↓
Final inspection
↓
Shipment

6. Three Core Components of OEM Battery Packs

6.1 Battery Cell Selection

Common battery chemistries:

LiFePO4 Battery Cells

优势

• 安全性高
• 循环寿命长
• 卓越的热稳定性

Suitable for:

• AGV
• Energy storage
• 叉车
• 工业机器人

NMC Lithium Battery Cells

优势

• 更高的能量密度
• Compact size
• 轻质设计

Suitable for:

• 电动汽车
• 电动工具
• Portable equipment

6.2 Battery Management System (BMS)

BMS is the intelligent control system of a battery pack.

Main functions:

Protection Functions

包括

• 过充电保护
• 过放电保护
• 过流保护
• 短路保护
• 温度保护

Smart Communication

Advanced BMS supports:

• CAN 通信
• RS485
• Bluetooth APP

Used in:

• AGV
• AMR
• 工业设备

6.3 Battery Structure Design

Professional battery design should consider:

• Heat dissipation
• Waterproof performance
• 抗冲击性
• Maintenance convenience

Common protection ratings:

• IP65
• IP67
• IP68

7. OEM Battery Certification Requirements

Different markets require different certifications.

常见的认证包括

UN38.3 focuses on transportation safety testing, while IEC 62133 focuses on battery safety performance. OEM buyers should confirm certification requirements based on their target market.

8. How to Choose OEM Batteries for Different Applications?

AGV / AMR Robot Batteries

Recommended:

LiFePO4 battery technology

主要要求

• 循环寿命长
• Fast charging capability
• 安全性高
• CAN 通信

Typical voltages:

24V / 48V / 72V

Electric Bike Batteries

重要因素

• 轻质设计
• 防水保护
• Long range
• UL certification

Common systems:

36V
48V
52V

储能电池

Recommended:

磷酸铁锂

重要因素

• 使用寿命长
• 安全性高
• Large capacity

例如

51.2V 100Ah

Industrial Equipment Batteries

Requirements:

• High reliability
• Wide temperature operation
• 抗冲击性

应用：

• 叉车
• 清洁机器
• 工业机器人

9. Common Mistakes When Purchasing OEM Battery Packs

Mistake 1: Only Comparing Prices

Low-cost batteries may involve:

• Lower-grade cells
• Simplified BMS
• Reduced testing procedures

Mistake 2: Only Focusing on Battery Cell Brands

A famous battery cell brand does not automatically guarantee a high-quality battery pack.

PACK quality also depends on:

• 工程设计
• Welding technology
• BMS matching
• Quality control process

Mistake 3: Ignoring Certifications

Without proper certifications, products may face:

• Customs clearance problems
• Market restrictions
• 客户投诉

10. OEM Battery Supplier Evaluation Checklist

Before choosing a supplier, confirm:

✅ Does the company have an independent battery R&D team?
✅ Can they provide prototype samples?
✅ Do they provide complete test reports?
✅ Can they support international certifications?
✅ Do they have export experience?
✅ Can they provide long-term supply?
✅ Do they offer technical support after delivery?

常见问题

Q1: How long does OEM battery development take?

Typical timeline:

• Solution design: 3-7 days
• Prototype development: 2-6 weeks
• Mass production: Depends on order quantity

Q2: What is the MOQ for customized battery packs?

MOQ depends on:

• Battery model
• Structural complexity
• Cell supply availability

Some manufacturers support small-batch prototype testing before mass production.

Q3: Can customers specify battery cell brands?

是的。.

Common options include:

• 伊娃
• 三星 SDI
• LG 能源解决方案
• 松下公司
• FEB

Q4: Can OEM battery packs be exported globally?

Yes, but buyers should confirm:

• UN38.3
• MSDS
• Shipping documents
• Target market certifications

结论

选择正确的 OEM battery pack manufacturer means selecting a long-term technology partner.

A professional OEM supplier provides more than batteries. They provide:

⚡ Battery solution design
⚡ Product safety assurance
⚡ Stable mass production capability
⚡ Global certification support

For companies developing AGV robots, electric vehicles, energy storage systems, and industrial equipment, a reliable OEM battery solution can reduce development risks and accelerate product commercialization.

Dongguan Yizhan Electronics Technology Co., Ltd.  specializes in lithium battery PACK OEM/ODM solutions, providing customized 18650, 21700, LiFePO4, and NMC battery solutions for AGV, AMR robots, electric vehicles, energy storage systems, and industrial equipment. We support 24V-72V customized battery development, smart BMS communication, waterproof designs, and global certification services.