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Lead Acid Automotive Battery Plastic Case

Lead Acid Automotive Battery Plastic Case

The Automotive AGM Start-Stop Lead-Acid Battery Housing is a purpose-built protective case designed specifically for AGM start-stop lead-acid batteries. It is molded from flame-retardant grade polypropylene (PP) and complies with automotive component safety standards such as ISO 14982 and GB/T 28046. The housing offers core advantages, including fire resistance, vibration and pressure durability, precise sealing, and high/low temperature tolerance. It serves as a critical battery component for both OEM applications and aftermarket replacements, compatible with start-stop systems in passenger cars, commercial vehicles, and other vehicle types. Compared with traditional metal battery cases, the plastic housing reduces weight by over 40%, effectively lowering the overall vehicle load and contributing to improved fuel efficiency.

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About
Taizhou Sanding Molding Co., Ltd.

Taizhou Sanding Molding Co., Ltd., established in November 2007, with Wang Tongliang as its legal representative and a registered capital of 2.28 million yuan, is located at No. 1188 Qihang Road, Sanjia Street, Taizhou Bay New Area, Taizhou City, Zhejiang Province, covering an area of ​​28,000 square meters. It is a private manufacturing enterprise with nearly 20 years of experience in the molding industry. The company currently has over 100 employees, including 5 professional technicians, 18 administrative personnel, and over 70 production staff. In 2023, it completed customs import and export registration, possessing independent import and export qualifications. Its current operations are stable, with standardized social security coverage and compliant operations.

Regarding core qualifications and technical strength, the company has been recognized as a National High-tech Enterprise, a Science and Technology-based SME, and an Innovative SME. As one of the drafting units of the national standard for battery plastic casings, it passed ISO9001 quality management system certification in 2008, holds 7 qualification certificates and 5 administrative licenses, and has established a standardized production and quality control system. The company possesses an independent mold design and development team and a complete set of mold processing equipment, accumulating deep expertise in the field of battery shell molds. With the technical support of the Taizhou Plastics Research Institute (a Taizhou partner of the Institute of Materials Technology and Engineering, Chinese Academy of Sciences), it has successfully overcome application challenges related to high-temperature resistant ABS and high-temperature flame-retardant ABS materials. As of December 2025, the company held a total of 43 patents, demonstrating outstanding technology transfer capabilities. In terms of testing and production capacity, the company is equipped with a full set of testing facilities, capable of independently completing tests for core indicators such as impact strength, tensile strength, and flame retardancy. It owns over 60 injection molding machines ranging from 200 grams to 20,000 grams, capable of handling injection molded products weighing up to 15 kilograms per piece, with ample production capacity to flexibly adapt to diverse production needs.

The company focuses on mold manufacturing and plastic product R&D and production as its dual cores, covering the entire chain from design and R&D to production and sales. It also possesses supporting capabilities in new material technology R&D and industrial design. In 2023, the company expanded its business scope, adding technology import and export and goods import and export businesses, actively developing both domestic and international trade. The company's core products are primarily battery casings, focusing on energy storage, communication battery casings and other plastic productS, such as custom automotive battery case for lead-acid battery assembly . It is a leading automotive battery container plastic OEM manufacturer in the downstream battery industry, having supplied Huawei with high-temperature resistant and flame-retardant ABS battery casings in bulk, earning high praise from this leading client. In terms of diversified expansion, the company entered the bathroom plastic products sector in 2016, achieving mass production and serving well-known local bathroom companies in Taizhou. Simultaneously, it has expanded into furniture plastic products, daily necessities plastic parts, and pet supplies, offering a diverse product range tailored to market demands. In 2020, the company successfully won the bid for the smart toilet seat and back cover mold project from Qingdao Weixi Intelligent Technology, demonstrating its technological strength in the bathroom sector. Furthermore, the company also manufactures automotive and motorcycle parts, and plastic parts for motors and water pumps, leveraging its core molding capabilities to extend into other product categories and enhance its business resilience.

In terms of business model and development layout, the company operates primarily under the ODM/OEM model, providing customers with full-process customized services from product design to mass production and delivery. It also undertakes OEM production orders, balancing profit and capacity utilization. Simultaneously, it is steadily exploring the OBM model, developing its own brands to meet the demands of foreign trade transformation. Domestically, the company has cultivated deep roots in downstream industries such as batteries, sanitary ware, and daily necessities, accumulating stable customer resources. Internationally, it completed its registration and commenced its strategic layout in 2023, focusing on advantageous categories such as energy storage battery casings and targeting overseas new energy and daily necessities markets, possessing a solid foundation for foreign trade expansion. Leveraging the advantages of the Taizhou molding industry cluster, the company uses "precision molds + high-quality plastic products" as its core competitiveness, continuously deepening its presence in the new energy battery casing market while expanding into potential categories such as sanitary ware, daily necessities, and pet supplies. It is steadily promoting integrated domestic and international trade development, striving to become a high-quality molding supplier in its niche markets.

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Lead Acid Automotive Battery Plastic Case

Lead acid automotive battery plastic cases are designed to house battery cells, electrolytes, separators, and terminal systems used in passenger vehicles, commercial vehicles, trucks, and automotive power systems. The battery case plays an important role in structural protection, acid containment, sealing performance, and long-term durability.

Full Manufacturing Support

Taizhou Sanding Molding Co., Ltd. provides complete development and manufacturing support including product design, 3D modeling, mold development, mold flow analysis, prototype verification, injection molding production, quality inspection, packaging, and export delivery.

We support both standard automotive battery housings and customized battery case projects based on drawings, samples, technical specifications, or OEM requirements.

Product Range

Automotive battery cases, automotive battery covers, lead acid battery containers, starter battery housings, truck battery cases, maintenance-free battery housings, AGM battery enclosures, battery lids, and custom molded battery components.

Common Challenges in Automotive Battery Housing Manufacturing

Vehicle Vibration Resistance

Automotive batteries are constantly exposed to road vibration and mechanical shock. Poor structural design may result in cracking, deformation, or reduced service life during long-term vehicle operation.

High Temperature Exposure

Battery housings installed in engine compartments must maintain dimensional stability under elevated temperatures. Heat resistance is important for long-term reliability and sealing performance.

Acid Containment and Leak Prevention

Buyers are highly concerned about acid leakage. Proper sealing areas, accurate dimensions, and stable welding structures help reduce leakage risks and improve battery safety.

Dimensional Consistency

Automotive battery production often involves automated assembly processes. Consistent dimensions help improve assembly efficiency and reduce production defects.

Material and Engineering Considerations

Automotive Grade PP Material

Polypropylene (PP) is widely used for automotive battery housings because of its acid resistance, molding performance, and cost-effective manufacturing characteristics.

Flame Retardant Material Options

For projects requiring enhanced safety performance, flame-retardant materials can be selected according to customer specifications and application requirements.

Reinforced Structural Design

Reinforcement ribs, partition walls, cover locking areas, and terminal support structures are carefully designed to improve strength and reduce deformation risks.

Low Temperature Impact Performance

For vehicles operating in cold climates, battery housings may require improved impact resistance to maintain structural stability under low-temperature conditions.

Advantage of Sanding

In-house Mold Development

Independent mold manufacturing helps maintain dimensional precision, production consistency, and long-term tooling stability.

Mold Flow Analysis

Mold flow simulation is used to optimize filling performance, reduce shrinkage issues, and improve product quality before mass production.

Automotive Quality Control

Critical dimensions, appearance quality, structural features, and assembly performance are monitored throughout production.

Stable Batch Production

With more than 60 injection molding machines and mature production management, Sanding supports reliable and consistent supply capability.

Custom Automotive Battery Case Solutions

OEM and ODM Development Support

Sanding supports custom battery case development including dimensions, partition layouts, terminal locations, molded logos, identification marks, colors, material options, packaging solutions, and private label requirements.

Why Work with Sanding

One-stop Battery Housing Manufacturing

From product evaluation and mold development to injection molding, quality inspection, packaging, and export shipment, Sanding provides a complete manufacturing solution for automotive battery housing projects.

Our engineering team works closely with customers to improve product structure, manufacturing efficiency, and production stability throughout the development process.

FAQ of Lead Acid Automotive Battery Plastic Case

Why is vibration resistance important for automotive battery cases?

Vehicle vibration can place continuous stress on the battery housing. Proper structural design helps prevent cracking, deformation, and premature battery failure.

What material is commonly used for automotive battery housings?

Automotive battery cases are commonly manufactured from high-quality polypropylene (PP) because of its acid resistance, durability, and molding performance.

Can battery cases withstand engine compartment temperatures?

Yes. Proper material selection and structural design help maintain dimensional stability under elevated operating temperatures.

How do you prevent acid leakage in battery housings?

Leak prevention depends on accurate mold manufacturing, controlled dimensional tolerances, optimized sealing areas, and stable welding performance.

Can Sanding manufacture custom automotive battery cases?

Yes. We support OEM and ODM projects based on drawings, samples, 3D files, and technical specifications.

Are flame-retardant materials available?

Yes. Flame-retardant PP materials can be supplied according to project requirements and safety standards.

Can molded logos and identification marks be added?

Yes. Molded logos, date codes, serial marks, and customized identification features can be integrated into the mold design.

What information is needed to start a custom automotive battery housing project?

Useful information includes drawings, battery dimensions, annual demand, material requirements, performance standards, logo requirements, and packaging specifications.