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

例を挙げよう：

• 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
• 耐衝撃性
• IP65/IP67 waterproof protection

2.2 Matching Specific Performance Requirements

Standard batteries may not meet the requirements of professional equipment.

OEM solutions can customize:

電圧オプション

一般的な構成：

• 12V
• 24V
• 36V
• 48V
• 51.2V
• 72V

Capacity Options

例を挙げよう：

• 10Ah
• 20Ah
• 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

例を挙げよう：

• AGVロボット
• AMR robots
• Eバイク
• フォークリフト
• ゴルフカート
• エネルギー貯蔵システム

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
• 充電電流
• Discharge rate
• 通信プロトコル

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

含む：

• 電圧試験
• 内部抵抗試験
• キャパシティ・テスト
• 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:

• 自動組立ライン
• Laser welding equipment
• Spot welding equipment
• Aging test rooms
• High and low-temperature testing equipment
• 防水試験装置

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開発
• Parameter adjustment

Mechanical Engineering Team

Responsible for:

• CAD design
• Battery housing design
• Waterproof structure design

Testing Team

Responsible for:

• Performance verification
• 安全性試験
• Reliability testing

5. OEM Battery Development Process

A complete development process usually includes:

Step 1: Requirement Confirmation

Customer provides:

• Application details
• バッテリー仕様
• Size limitations
• Certification requirements

Step 2: Battery Solution Design

Engineers determine:

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

例

48V 20Ah battery pack:

13-series lithium cells:

13S × 3.7V ≈ 48V

Step 3: Prototype Production

Prototype samples are created for:

• Engineering verification
• 機能テスト

Testing includes:

• 電圧
• 定員
• Discharge performance
• Communication functions

Step 4: Reliability Testing

Electrical Performance Testing

含む：

• Charge/discharge testing
• サイクル寿命試験
• キャパシティ・テスト

安全試験

含む：

• 過充電保護
• 過放電保護
• 短絡保護
• Temperature rise testing

Step 5: Mass Production

Manufacturing process:

細胞選別
↓
Cell assembly
↓
Welding
↓
BMS設置
↓
Battery pack assembly
↓
エージングテスト
↓
Final inspection
↓
Shipment

6. Three Core Components of OEM Battery Packs

6.1 Battery Cell Selection

Common battery chemistries:

LiFePO4 Battery Cells

メリット

• 高い安全性
• 長いサイクル寿命
• 優れた熱安定性

Suitable for:

• AGV
• Energy storage
• フォークリフト
• 産業用ロボット

NMC Lithium Battery Cells

メリット

• より高いエネルギー密度
• Compact size
• 軽量設計

Suitable for:

• 電気自動車
• 電動工具
• Portable equipment

6.2 Battery Management System (BMS)

BMS is the intelligent control system of a battery pack.

Main functions:

Protection Functions

含む：

• 過充電保護
• 過放電保護
• 過電流保護
• 短絡保護
• 温度保護

Smart Communication

Advanced BMS supports:

• CAN通信
• RS485
• Bluetooth APP

Used in:

• AGV
• AMR
• 産業機器

6.3 Battery Structure Design

Professional battery design should consider:

• Heat dissipation
• Waterproof performance
• 耐衝撃性
• Maintenance convenience

Common protection ratings:

• IP65
• IP67
• IP68

7. OEM Battery Certification Requirements

Different markets require different certifications.

一般的な資格には以下のようなものがある：

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

主な要件

• 長いサイクル寿命
• Fast charging capability
• 高い安全性
• CAN通信

Typical voltages:

24V / 48V / 72V

Electric Bike Batteries

重要な要素：

• 軽量設計
• 防水プロテクション
• Long range
• UL certification

Common systems:

36V
48V
52V

Energy Storage Batteries

Recommended:

LiFePO4

重要な要素：

• 長寿命
• 高い安全性
• Large capacity

例

51.2V 100Ah

Industrial Equipment Batteries

Requirements:

• High reliability
• Wide temperature operation
• 耐衝撃性

アプリケーション

• フォークリフト
• 洗浄機
• 産業用ロボット

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:

• エンジニアリング・デザイン
• Welding technology
• BMS matching
• Quality control process

Mistake 3: Ignoring Certifications

Without proper certifications, products may face:

• Customs clearance problems
• Market restrictions
• 顧客からの苦情

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?

よくあるご質問

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?

そうだ。.

Common options include:

• イーブ
• サムスンSDI
• LGエナジー・ソリューション
• パナソニック
• FEB

Q4: Can OEM battery packs be exported globally?

Yes, but buyers should confirm:

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

結論

正しい選択 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.