Ningbo Zhaoxu Plastic Products Co., Ltd. undertakes mold development and injection molding processing for lithium battery housings of power tools. We support custom manufacturing from drawings, custom production from samples, and injection molding with customer-supplied molds and materials. Integrating custom plastic mold development, precision injection molding and finished product assembly, we provide one-stop supporting services from product structure evaluation, mold manufacturing to mass injection molding for power tool manufacturers, lithium battery PACK factories and cross-border e-commerce trading customers.

      Lithium battery housings for power tools protect internal battery cells and protection board assemblies. The products have high requirements for impact resistance, drop resistance, wear resistance, assembly tolerance, snap structural strength and flame retardancy. Some products adopt two-color button structures. Dimensions of housing snaps, positioning posts and ribs directly affect battery assembly and disassembly feel. We can complete mold design, machining, mold trial, mass injection molding and supporting post-processing according to customer drawings or physical samples.

      The factory is located in Fanci Mold City, Longshan, Cixi, Ningbo, covering a production area of 2000 square meters with independent mold workshop, injection molding workshop and assembly workshop. The mold workshop is equipped with complete processing equipment including CNC machining centers, high-speed engraving and milling machines, EDM machines and grinders. Haitian injection molding machines equipped with servo manipulators and production monitoring systems are used in the injection workshop to stably realize mass production of plastic parts.

Product Processing Advantages

      1. Integrated mold opening and injection molding service. The whole process of mold design & fabrication and injection production is completed in-house to reduce outsourced processes and facilitate project follow-up and quality control.

      2. Full mold processing capability. We independently complete CNC milling, EDM, polishing, mold fitting and trial for the whole set of molds, control mold development cycle and realize rapid mold revision and adjustment.

      3. Pre-project DFM structural evaluation. Risk assessment for battery housing snaps, ribs, positioning posts and assembly positions, optimize structures in advance to prevent snap breakage, too tight or loose assembly, housing warpage and other issues.

      4. Multiple plastic raw materials available. Flame-retardant and impact-resistant grades such as ABS, ABS+PC, PC and PA can be selected to meet safety standard, drop resistance and wear resistance requirements of lithium battery housings. Two-color overmold molds are supported for integral forming of housings and unlock buttons.

      5. Strict control of assembly dimensional accuracy to guarantee snap plugging feel and housing closing gaps. Logo characters can be directly engraved on molds to reduce subsequent silk-screen printing processes.

      6. Supporting post-processing services available, including appearance inspection, simple assembly and packaged delivery to reduce customers’ workload of secondary processing.

Applicable Product Categories

      Injection molding of lithium battery housings for power tools

      Upper and lower plastic shells for lithium battery protective housings

      Mold development for power tool battery pack housings

      Custom two-color button housings for lithium batteries

      Processing of plastic housings for power batteries

      Integral forming of logo characters on battery housings

      Custom plastic housings for various energy storage and tool batteries

      The above are regular processing categories. Feasibility evaluation for other plastic battery housings is available upon drawings or samples.

Common Material Guide

      ABS: Good toughness and impact resistance, cost-effective, flame-retardant grades optional, commonly used for ordinary power tool battery housings.

      ABS+PC alloy: Combines toughness, heat resistance and drop resistance with good dimensional stability, widely used for mid-to-high end power tool battery housings.

      PC: Excellent impact resistance and flame retardancy, high temperature resistance, preferred for battery pack housings with high safety requirements.

      PA Nylon: Wear-resistant and impact-resistant, suitable for high-strength working conditions, mostly used for lithium battery housings under special working conditions.

      Material selection is comprehensively determined by product safety flame retardant grade, drop resistance requirements and cost. Engineers provide material selection suggestions.

Processing Workflow

      Customer submits requirements with drawings or physical samples→DFM feasibility assessment by engineers→Proposal and quotation issued for mutual confirmation→Mold structural design→Mold fabrication→Mold assembly & T1 mold trial→Sample delivery for customer confirmation→Mold revision and adjustment based on feedback→Mass injection molding after approval→Finished product inspection & packaging→Logistics delivery→After-sales follow-up.

      During requirement evaluation, customers provide 2D/3D drawings or physical samples. Engineers analyze product structure and material requirements. Quotation will be available within 1‑2 working days.

      Mold design focuses on snaps, reinforcing ribs, positioning posts, logo characters and two-color structures (if applicable). Machining starts after design approval.

      After mold trial, samples are inspected for dimension, snap strength, assembly gap and appearance. Mass production will be launched after customer approval.

Quality Control

      Raw material grades are checked upon incoming storage; material certificates can be provided for flame-retardant materials.

      First article inspection for each production batch to verify dimensions, snap assembly and appearance.

      Periodic patrol inspection during production to control defects such as plastic part warpage, short shot, cracks and flash.

      Full inspection of key assembly positions for finished products; defective products are sorted and isolated.

      Traceable production records including machine number and raw material batch for convenient problem review.

Factory Profile

      The factory covers approximately 2000 square meters with separate workshops for mold, injection molding and assembly.

      Mold equipment includes more than ten complete sets of machines such as CNC machining centers, high-speed engraving and milling machines, EDM machines and grinders.

      Injection molding equipment are Haitian injection machines equipped with servo manipulators and production monitoring systems.

      The core engineers have 25 years of plastic molding experience and 15 years of auto parts quality control experience, with supporting service experience for OEM manufacturers.

      The factory is located in Fanci Mold City, Longshan Town, Cixi, Ningbo, close to National Highway 329 with convenient logistics and transportation.

Cooperation Steps

      1. Inquiry & Communication: Provide 3D drawings or physical samples and specify annual output, flame retardancy, assembly and other requirements. Response and communication within 1 working day.

      2. Solution Evaluation: Engineers complete product assessment and issue quotations for molds and products within 1‑2 working days.

      3. Quotation Confirmation: Confirm steel grade, materials, lead time and cooperation terms.

      4. Mold Development: Complete structural design, machining, assembly, mold trial and revision. Lead time depends on product complexity.

      5. Sample Confirmation: Deliver trial samples for customers to check assembly, appearance and dimensions and complete mold acceptance.

      6. Mass Production: Carry out injection production according to orders and deliver goods after inspection and packaging.

FAQ

Q: Can you develop molds if I only have physical battery housing samples without drawings?

A: Yes. We support 3D scanning and reverse engineering from samples to generate 3D models for mold development.

Q: The battery housing needs flame retardancy and drop resistance. Is it achievable?

A: Yes. We select corresponding flame-retardant and impact-resistant plastic raw materials to meet relevant safety requirements for lithium batteries.

Q: For the red unlock button on the housing, can two-color overmold integrated molds be made?

A: Yes. Two-color mold development is supported. The housing and button can be formed by one-time injection molding.

Q: What is the MOQ for lithium battery housing injection molding?

A: MOQ depends on product structure and mold scheme. Both small trial orders and large-volume orders are acceptable, subject to quotation.

Q: Can the housing logo be formed directly by mold?

A: Yes. Concave and convex characters can be engraved on mold inserts for direct injection forming. Silk screen printing and laser engraving after molding are also available.

Q: Will samples be provided for confirmation before mass production?

A: Yes. Samples will be provided after mold trial, and mass production will start only after customer approval.

Contact Information

Company Name: Ningbo Zhaoxu Plastic Products Co., Ltd.

Factory Address: No.5 Weisan Road, Fanci, Longshan Town, Cixi City, Ningbo, Zhejiang Province

Business Scope: Injection molding of power tool lithium battery housings, custom mold development for battery pack housings, two-color overmold molds, precision injection molds, custom manufacturing from samples & drawings

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