Originally Battery Accessory, testing range: 0.5-160 degrees, temperature resistance: 400 ℃, beryllium window (polyester film) size: diameter 15mm (customizable); Thickness 0.1mm (customizable). They are widely used as X-ray diffractometer accessories in electrochemical systems containing carbon, oxygen, nitrogen sulfur, metal embedded complexes, etc. Originally Battery Accessory is used to fix the entire Originally Battery  sample stage on the angle measuring instrument of the X-ray diffractometer, serving as a connection and support.