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

예시:

• 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
• 내충격성
• IP65/IP67 waterproof protection

2.2 Matching Specific Performance Requirements

Standard batteries may not meet the requirements of professional equipment.

OEM solutions can customize:

전압 옵션

일반적인 구성:

• 12V
• 24V
• 36V
• 48V
• 51.2V
• 72V

Capacity Options

예시:

• 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

예시:

• AGV 로봇
• AMR robots
• 전동 자전거
• 지게차
• 골프 카트
• 에너지 저장 시스템

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
• 충전 전류
• Discharge rate
• 통신 프로토콜

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

포함:

• 전압 테스트
• 내부 저항 테스트
• 용량 테스트
• 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:

• 자동화된 조립 라인
• Laser welding equipment
• Spot welding equipment
• Aging test rooms
• High and low-temperature testing equipment
• 방수 테스트 장비

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 개발
• Parameter adjustment

Mechanical Engineering Team

Responsible for:

• CAD design
• Battery housing design
• Waterproof structure design

Testing Team

Responsible for:

• Performance verification
• 안전 시험
• Reliability testing

5. OEM Battery Development Process

A complete development process usually includes:

Step 1: Requirement Confirmation

Customer provides:

• Application details
• 배터리 사양
• Size limitations
• Certification requirements

Step 2: Battery Solution Design

Engineers determine:

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

예시:

48V 20Ah battery pack:

13-series lithium cells:

13S × 3.7V ≈ 48V

Step 3: Prototype Production

Prototype samples are created for:

• Engineering verification
• 기능 테스트

Testing includes:

• 전압
• 용량
• Discharge performance
• Communication functions

Step 4: Reliability Testing

Electrical Performance Testing

포함:

• Charge/discharge testing
• 주기 수명 테스트
• 용량 테스트

Safety Testing

포함:

• 과충전 방지
• 과방전 방지
• 단락 보호
• Temperature rise testing

Step 5: Mass Production

Manufacturing process:

세포 선별
↓
Cell assembly
↓
Welding
↓
BMS installation
↓
Battery pack assembly
↓
Aging test
↓
Final inspection
↓
Shipment

6. Three Core Components of OEM Battery Packs

6.1 Battery Cell Selection

Common battery chemistries:

LiFePO4 Battery Cells

장점:

• 높은 안전성
• 긴 주기 수명
• 뛰어난 열 안정성

Suitable for:

• AGV
• Energy storage
• 지게차
• 산업용 로봇

NMC Lithium Battery Cells

장점:

• 더 높은 에너지 밀도
• Compact size
• 경량 설계

Suitable for:

• 전기 자동차
• 전동 공구
• Portable equipment

6.2 Battery Management System (BMS)

BMS is the intelligent control system of a battery pack.

Main functions:

Protection Functions

포함:

• 과충전 방지
• 과방전 방지
• 과전류 보호
• 단락 보호
• 온도 보호

Smart Communication

Advanced BMS supports:

• CAN 통신
• RS485
• Bluetooth APP

Used in:

• AGV
• AMR
• 산업 장비

6.3 Battery Structure Design

Professional battery design should consider:

• Heat dissipation
• Waterproof performance
• 내충격성
• Maintenance convenience

Common protection ratings:

• IP65
• IP67
• IP68

7. OEM Battery Certification Requirements

Different markets require different certifications.

일반적인 인증은 다음과 같습니다:

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

주요 요구 사항:

• 긴 주기 수명
• Fast charging capability
• 높은 안전성
• CAN 통신

Typical voltages:

24V / 48V / 72V

Electric Bike Batteries

중요한 요소:

• 경량 설계
• 방수 보호
• Long range
• UL certification

Common systems:

36V
48V
52V

에너지 저장 배터리

Recommended:

LiFePO4

중요한 요소:

• 긴 수명
• 높은 안전성
• Large capacity

예시:

51.2V 100Ah

Industrial Equipment Batteries

Requirements:

• High reliability
• Wide temperature operation
• 내충격성

애플리케이션:

• 지게차
• 청소 기계
• 산업용 로봇

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:

• 엔지니어링 설계
• Welding technology
• BMS matching
• Quality control process

Mistake 3: Ignoring Certifications

Without proper certifications, products may face:

• Customs clearance problems
• Market restrictions
• 고객 불만 사항

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?

자주 묻는 질문

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?

예.

Common options include:

• EVE
• 삼성SDI
• LG 에너지 솔루션
• Panasonic
• FEB

Q4: Can OEM battery packs be exported globally?

Yes, but buyers should confirm:

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

결론

올바른 선택 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.