am a dedicated user of K&F Concept products for my video production company and recently had the opportunity to experience their exceptional customer service first hand. When using the K&F Concept VB99 battery, there was an issue where one battery stopped holding charge and the other charged slowly. As a professional who relies on reliable equipment, this has been an issue for my workflow. However, I contacted K&F Concept customer service (Alex was a great help) and was pleasantly surprised by the quick and efficient response. They recognized my problem and promptly provided me with two brand new batteries to replace overnight. This level of support and commitment to their customers is truly commendable. Despite this isolated case, I have to emphasize that I am still a big fan of K&F Concept and its products. Their extensive range of camera accessories has become a staple of my professional setup. In terms of build quality, design and functionality, K&F Concept consistently delivers outstanding performance. It's important to note that every product has occasional issues, but the way the company handles them sets them apart. K&F Concept's commitment to customer satisfaction and willingness to do whatever it takes to support small businesses like mine has earned me my unwavering loyalty. I have complete confidence in K&F Concept and its commitment to manufacturing quality products. The K&F Concept VB99 battery remains a valuable addition to my gear collection despite the issues I have faced. I appreciate their exceptional customer service, which reinforces my decision to support K&F Concept in the future. Overall, I highly recommend the K&F Concept to professionals and enthusiasts who need reliable camera accessories. With their world class customer service and wide range of exceptional products, K&F Concept has proven to be a reliable partner for my video production needs.