Utilizing mature lithium-ion battery technology, with a nominal capacity of 3300mAh, it provides a long-lasting and stable output under rated voltage, effectively extending the instrument's single-use time and reducing the frequency of charging and battery replacement. Its classic 18650 cylindrical size makes it perfectly compatible with various professional instruments, handheld devices, and portable testing equipment, and it is widely used in handheld measuring instruments and optoelectronic testing equipment.