Why Choose Us
Factory Direct Pricing: Benefit from competitive prices and a reliable supply chain, sourcing premium cells from CATL, BYD, Gotion, and Ganfeng.
Custom Metal Enclosures: Durable steel or aluminum cases tailored for your needs, produced in our semi-automatic workshop with advanced laser welding machines.
Global Safety Standards: CE, UL, UN38.3, and MSDS certified, with full production traceability and strict quality control at every stage.
R&D Expertise:25-member team, including 5 ex-BYD senior engineers, continuously innovating to meet global market demands.
Grading System
Cells purchased from manufacturers come in different batches, each with varying resistance and capacity. Strict sampling tests are conducted to verify capacity and performance. Approved cells are then stored for future use.
Lithium Battery Workshop
Covering over 6,000 square meters, the production lines are equipped with clear SOPs , emergency fire exits, and contingency plans. All equipment undergoes annual precision calibration, with detailed records maintained.
Sample Workshop
Produces durable steel enclosures on semi-automatic lines, featuring precision laser welding and strict quality checks. Our process ensures reliable, custom metal cases for energy storage, golf carts, marine, and industrial applications.
Laser Welding
Before mass production, welding diagrams are prepared in advance. Cells and copper bars are accurately arranged and then placed into the automated laser welding machines.
Lithium Battery Aging Room
Leadmax Battery After production, a comprehensive charge and discharge test is performed, recording capacity, charge/discharge rates, and temperature data for future traceability.
Lithium Battery SOC Calibration
Before shipment, all battery packs of the same batch are voltage-tested against their discharge curves to ensure uniformity at 55% SOC, preventing excessive discharge during sea transport.
Lithium Battery Finished Goods
Finished products, after passing aging tests and SOC calibration, are placed in the warehouse for shipping. Products not shipped within a month are re-inspected before being restocked.
Lithium Battery Shipping
Leadmax Battery delivers high-quality lithium batteries from our factory with secure packaging and strict testing, ensuring safe, timely supply for energy storage. golf carts, marine, and industrial applications.
Our Solutions
As a leading Chinese lithium battery manufacturer, Leadmax offers over 700 custom models, combining factory-direct pricing, advanced production lines, and strict quality control. We excel at understanding and addressing customer needs, delivering tailored solutions for diverse industrial sectors worldwide.
Electric Vehicles
Industrial Machines
Automatic Self-Heating Function
Leadmax lithium batteries are equipped with an intelligent self-heating system designed for cold climates.
When the temperature drops below 32°F (0°C), the battery automatically activates its heating function, protecting the cells from low-temperature charging damage.
Once the internal temperature rises above 41°F (5°C), the heating function stops, and the battery resumes normal charging.
This smart feature ensures reliable performance, longer cycle life, and worry-free use in winter or extreme environments.
What Makes Us Special?
We have over 12 years of experience in lithium battery design and manufacturing. Our products provide comprehensive power solutions for most applications requiring lithium-ion batteries. With warranties of up to 10 years, we offer 24/7 technical support to suppliers and clients, along with competitive pricing.
R&D Engineer
Our core technical team, composed of former senior engineers from BYD.CATL, brings decades of project experience to the forefront.
Stable Cell Resources
Our battery packs, crafted with top brands like CATL, Lishen, Gotion, and BYD, are rigorously inspected for quality assurance.
Worldwide Business
Our primary clientele spans North America, Canada, Germany, Italy,. We are actively seeking to expand our network with global dealers.
Richly Tailored Ability
Our extensive selection of standard products is complemented by fast, customized solutions — providing plans and quotes within 24 hours.
Standard products are produced within 15-20 days and shipped immediately via sea or air. Customized products are produced within 30-35 days. Sea shipping usually takes 28-35 days.
An extensive product line, fully traceable production processes, an average warranty of over 10 years, stable cell resources from CATL, BYD, Gotion, and EVE, and support for production process visualization.
For orders below $10,000 USD, we accept 100% prepayment via T/T. For larger orders, we require a 50% prepayment. Once production is complete, we provide videos and images or conduct live video inspections, and the balance is paid before shipping.
We use cells from leading domestic brands like CATL, BYD, EVE, and Gotion. If you have a specific cell brand in mind, we can accommodate your request.
If you encounter a problem, please contact us via email at [email protected] to request a warranty. Describe the issue you’re facing, and we’ll reply within 12 hours and assign a dedicated customer service representative to assist you. Further responses will usually come within minutes for quick communication.
Typically, the warranty period is determined through rigorous testing. However, custom products are designed and assembled to client specifications, making it challenging to conduct comprehensive short-term testing. In most cases, we provide a 5-10 year warranty, depending on the specific application scenario, which will be clarified during communication
Yes, to meet customs and various national requirements, our standard products are certified with CE, MSDS, and UN38.3. Our cells generally have RoHS, UL1973, and IEC62619 certifications, with digital certificates available.
How Can We Help Your Business?
Efficiently reviewing your needs to provide professional technical solutions! We listen, care, and guarantee a response through email or phone within 6 hours.