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The Advantage
The task of the Battery Pin Hole Testing Machine is a pin hole test of empty battery boxes. Therefore the test heads are an individual design with several small chains for efficient testing of all areas of the bottom of an empty battery box. For testing, head will be placed into the battery box. The positive Electrode (chains) will be inside the battery box, while a negative electrode (copperplate) outside will be proof sealing of the battery box bottom. If there is a leak the system will show a failure signal. As an option all battery boxes can be marked on the bottom side with OK for good batteries or NOK for failed batteries after each test cycle.

Made in Germany
Exact & Precise
Quick & Clean
Individuals & Customized
Made in Germany
Exact & Precise
Quick & Clean
Individuals & Customized
Through close collaboration and a deep understanding of our customers’ needs, we deliver exactly what they expect: exceptional quality, intuitive usability, and tailored, personalized service. Our Premium Finishing Line Equipment is designed with cutting-edge technology to simplify operations and handling, ensuring a seamless experience. Engineered to exceed expectations, this high-tech solution is crafted to meet the highest standards and leave no detail overlooked.

CMWTEC offers complete solutions for battery production—ranging from stand-alone machines and fully automated lines to advanced testing equipment and smart handling systems. Our modular approach enables flexible configurations and seamless integration into existing processes. With the DataManager software, we also provide digital tools for process control, traceability, and production data management. From assembly to end-of-line testing, CMWTEC delivers efficient technology for the entire battery production workflow.





Exact & Precise
Tailored to meet the high-quality standards of original equipment manufacturers, our machines
guarantee precision and reliability.
Years of experience
With years of experience, we craft machines that perform flawlessly, empowering you to focus on what matters most—your production.
Worldwide ambitious
Manufactured in Germany and delivered worldwide, we ensure punctuality and consistency in every project.
Please contact us if you are interested in a machine from our machine portfolio. Or contact us if the machine you are looking for is not described on our website. Our sales team and our engineers will be happy to help you with the design for your specific requirements.
It checks empty car and truck battery boxes without cover for leaks in the bottom, including the bottom injection point. The machine is designed for the laboratory or the injection moulding line.
A test head with several small chains is placed into the box as the positive electrode, while a copper plate outside the box acts as the negative electrode. A high voltage is applied, and if there is a leak, the system shows a failure signal.
Test voltage and test current are adjustable from 0.5 to 20,000 V AC and from 0.5 to 25 mA. A test takes 1 second, and up to 6 boxes per minute can be tested, depending on the operator. The boxes must be dry and free of oil and dust.
Yes. As an option, each box is marked on the bottom with OK or NOK after the test cycle. Exchangeable test heads cover different battery types, and the working height is electrically adjustable.