Capacity: 4400MAH (capacity battery body not marked). Nature: Non-rechargeable disposable lithium battery. The main advantages of the battery. High voltage, high energy density, long service life, stable discharge, high current discharge performance, wide application temperature range (-40 to +85 degrees Celsius), no leakage.Real-time clock, alarm system, PLC backup memory power supply, FANUC FANUC numerical control system, CNC numerical control battery, servo motor, machine tool equipment, various measuring instruments, special electronic equipment, etc. Special lithium batteries for electronic products.