Product Details: BRAND: USPECIAL Model: MY-212005Q VDC: 21V CAPACITY: 2000mAh RATE: 5C POWER: 210W CELL: 5 Battery SIZE: 113*72*42mm BRAND: USPECIAL Model: MY-212010Q VDC: 21V CAPACITY: 2000mAh RATE: 10C POWER: 420W CELL: 5 Battery SIZE: 113*72*42mm Our diy battery pack are designed and built to be used in conjunction with the appropriate power tools and interchangeable with the Quanyou 18650 battery pack diy. Zhicheng provides 18650 battery pack diy for various industrial applications. Our diy battery pack are made of high-quality grade brand cells. Each lithium-ion 5s1p battery pack does a series of battery tests to ensure the real capacity over the customer's needs. We support hundreds of our customers to fulfill their custom 18650 battery pack diy. Our engineering team is devoted to designing long-lasting diy battery pack with a dependable quality that our customers can trust. The 5s1p battery pack consists of five 18650 lithium-ion cells, which provide powerful power support for the tool, ensuring unparalleled performance for your application. Of course, it offers a range of capacity options, including 1.5AH and more, providing flexible performance to meet your needs. About Us: Professional 18650 lithium battery and best battery pack manufacturers from China, focusing on the lithium battery industry for more than 20 years. Has a number of patents and product certification.