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Customization with Confidence, Warranty Assured by Us
Quality Assurance and Warranty Policy

At YINCHEM, we understand that lithium batteries are the core power source of your products, making their quality and reliability paramount. Therefore, we are not only dedicated to providing you with highly customized lithium battery solutions, but we also consider strict quality control and a comprehensive after-sales warranty as an indispensable part of our service.

Quality Commitment

Through meticulous selection of high-quality materials, exquisite manufacturing processes, rigorous testing throughout, and continuous solution optimization, we comprehensively ensure our products deliver outstanding performance, safety, and reliability, perfectly matching your needs.

Strict Material Selection

We exclusively use high-quality battery cells, BMS (Battery Management Systems), and other key components from industry-leading brands, guaranteeing product performance and safety from the source.

Exquisite Craftsmanship

Leveraging years of customization experience and a professional technical team, we ensure that every stage of production adheres to strict craftsmanship standards.

Comprehensive testing

From incoming material inspection and in-process controls to final product testing before shipment, every custom battery undergoes multiple rigorous testing procedures. This includes, but is not limited to, capacity testing, internal resistance testing, charge/discharge performance testing, and safety performance testing, ensuring the product delivered to you meets design specifications and exceptional quality.

Solution Optimization

Our technical team will carry out professional solution design and optimization based on your specific application scenarios and requirements, ensuring the battery's performance perfectly matches your equipment and possesses excellent durability.

First-Class Quality, Attention to Detail, Full Participation, Customer Satisfaction

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Quality Control Process, Full-Process Inspection
1
Submit a Warranty Claim
2
Product Inspection and Evaluation
3
Repair, Testing, and Return
Please send an email to: Service@yinchem.com
To ensure we can process your request efficiently, please include the following key information in your email:
  • Your Detailed Shipping Address: (For product return shipping)
  • Product Model: (Usually marked on the product itself or its packaging)
  • Detailed Problem Description: Please describe the issue, malfunction, or symptoms your product is experiencing as specifically as possible. If convenient, attaching relevant photos or a short video will help us diagnose the problem more quickly.
  • Your Preferred Contact Method: Please provide your phone number, and optionally, your WeChat ID or WhatsApp number, so we can communicate with you promptly.
Please send an email to: Service@yinchem.com
To ensure we can process your request efficiently, please include the following key information in your email:
  • Our team of professional engineers will immediately conduct a comprehensive inspection and detailed evaluation of the product.
  • We will carefully analyze the cause of the failure to determine if it falls within the scope of the warranty.
  • The inspection and evaluation process typically takes [e.g., 3-5] business days, though the specific time may vary depending on the complexity of the issue. We will keep you informed of the progress in a timely manner.
Please send an email to: Service@yinchem.com
To ensure we can process your request efficiently, please include the following key information in your email:
  • The repaired or replaced product will undergo at least two rounds of rigorous performance and safety testing to ensure it is fully restored to normal function and meets factory standards.
  • After passing all tests, we will properly package the product and ship it back to your designated address as quickly and safely as possible. At the same time, we will provide you with the relevant logistics information.