BioPin’s Customized Production & Successful Delivery Case
Sep 01, 2026
In the rapidly evolving new energy industry, many overseas battery manufacturers and solution engineers often face common pain points: off-the-shelf aluminum foil has inconsistent thickness, insufficient tensile strength, poor corrosion resistance, or unsuitable dimensions for their production lines.
As a professional manufacturer of battery aluminum foil with independent R&D and full-scale production capabilities, we support full-dimensional customized battery aluminum foil for global clients. Today, we share a real customized production and delivery case to demonstrate our mature customization technology, strict quality control, and stable cross-border delivery capabilities.
Project Background: Customized Demand for High-Cycle Energy Storage Battery Aluminum Foil
This cooperation client is a professional energy storage battery manufacturer in India, focusing on household and industrial large-scale energy storage battery production. Their new-generation long-cycle energy storage batteries have extremely strict requirements on the stability, durability, and consistency of positive electrode current collector aluminum foil.
Before cooperating with us, the client had been using standard commercial aluminum foil and encountered many practical production problems:
• Ordinary rolled aluminum foil has unstable tensile and elongation properties, which is easy to cause foil breakage during high-speed battery coating and winding
• Standard width and roll diameter cannot match their automated production line, resulting in low production efficiency and material waste
• Conventional finished products are prone to tiny pinholes and surface oxidation spots, failing to meet their high-standard quality inspection system
To solve the above problems, the client put forward non-standard size and high-performance customized requirements, hoping to find a factory with independent customization capability and strict process control for long-term cooperative supply.
Detailed Customized Technical Requirements
Wrapped with PE stretch film
Aluminum foil vacuum bag
Custom wooden box
After one-on-one technical communication between our engineers and the client’s team, we sorted out the core customized standards covering size, performance, process, and delivery:
• Dimensional customization: Custom ultra-narrow width and special inner hole roll diameter, different from conventional stock specifications, to fully adapt to the client’s automated winding equipment
• Performance customization: Higher tensile strength and elongation, enhanced electrolyte corrosion resistance, ultra-low surface roughness, zero pinholes and zero oxidation on the foil surface
• Process customization: Adopt an optimized low-temperature annealing process to improve the flexibility and structural stability of aluminum foil; uniform matte surface treatment to enhance active material adhesion
• Delivery customization: Dust-free precision slitting, burr-free and warp-free finished products, exclusive moisture-proof and anti-rust export packaging suitable for long-distance sea transportation
Our Customized Production & Quality Control Solution
We have complete independent production lines and R&D adjustment capabilities. For this high-standard customized order, we formulated a targeted whole-process production plan:
1. Pre-Production Technical Verification
Our technical team sorted out personalized production parameters according to the client’s battery application scenario, equipment parameters, and performance indicators, and issued a complete customized technical specification sheet. Before mass production, we completed small-batch sample trial production and parameter testing to verify the feasibility of the scheme and avoid mass production risks.
2. High-Purity Raw Material Selection
In view of the client’s high cycle life requirements, we selected high-purity battery-grade aluminum billets with strictly controlled impurity content. High-purity raw materials effectively improve the electrical conductivity and corrosion resistance of the aluminum foil, laying a foundation for the long-term stable operation of energy storage batteries.
3. Personalized Process Adjustment
We dynamically adjusted rolling pressure, rolling speed, and annealing temperature according to customized requirements. The optimized annealing process eliminates internal stress of the aluminum foil, significantly improves ductility and uniformity, and solves the problem of foil breakage during high-speed winding. At the same time, the corona treatment ensures uniform adhesion of battery cathode electrode materials.
4. Whole-Process Strict Quality Inspection
We implemented full-process tracking and sampling inspection from semi-finished products to finished products. The inspection items include foil thickness uniformity, surface flatness, tensile strength, elongation, pinhole detection, surface roughness, and oxidation resistance. All finished products are accompanied by official factory inspection reports to ensure that each index fully meets the client’s customized standards.
Cross-Border Export Delivery
For cross-border transportation, we adopt specialized export-grade moisture-proof, anti-rust, and shock-proof packaging. Each roll of aluminum foil is independently sealed and protected with multi-layer packaging to prevent oxidation, deformation, and damage during long-term sea transportation and temperature and humidity changes.
In terms of document support, we provide complete export documents such as CE, RoHS, material certification and quality inspection reports to help overseas clients complete customs clearance and factory quality audit smoothly.
For cross-border transportation, we adopt specialized export-grade moisture-proof, anti-rust and shock-proof packaging. Each roll of aluminum foil is independently sealed and protected with multi-layer packaging to prevent oxidation, deformation, and damage during long-term sea transportation and temperature and humidity changes.
In terms of document support, we provide complete export documents such as CE, RoHS, material certification, and quality inspection reports to help overseas clients complete customs clearance and factory quality audit smoothly.
Project Results & Client Feedback
This customized batch of battery aluminum foil has been successfully delivered to the Indian client’s factory and put into mass production. The final cooperation results fully verify the reliability of our customized solutions:
• All performance and size indicators of the aluminum foil fully meet the customized standards, with a 100% qualified inspection rate
• The optimized aluminum foil significantly improves the bonding firmness of positive electrode materials, effectively reducing battery internal resistance and improving battery cycle stability
• Zero quality problems and zero transportation losses occurred during the use process, perfectly matching the client’s automated production line
• The client has established a long-term stable strategic cooperative relationship with us and continued to place customized bulk orders
Our Customization Capability Scope
We are not only a supplier of standard battery aluminum foil, but also a professional customized solution provider for global battery enterprises. We support full-dimensional personalized customization:
• Size Customization: Custom thickness (8μm–20μm), special width, customized roll diameter, and inner hole size
• Performance Customization: High toughness, high corrosion resistance, low roughness, ultra-thin and high-strength aluminum foil for low-temperature and high-rate scenarios
• Process Customization: Custom matte/polished surface, personalized annealing process and precision slitting
• Service Customization: Custom export packaging, urgent delivery, exclusive technical docking and complete factory certification documents
Get Your Custom Battery Aluminum Foil Solution Now
Contact us today for sample testing, one-on-one technical solution docking, and exclusive factory quotation. We support global cross-border delivery and long-term OEM/ODM customized cooperation to help your battery products improve performance and competitiveness.
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