... capacitor 1.large capacitance,small size,long life,stable performance 2.Voltage: 2.7V Value: 10F , 8F , 4.7F , 30F, 20F super ... performance,B)Can be back-up powerC)Temperature: -25C~+70CVoltage: 2.7V Value: 10F , 8F , 4.7F , 30F , 2F , 1F, 400F ... door lock,MP3,PDA,DVD,VTR,GPS,PLC, UPS,electric cooker, self-powered super flashlight,laptop and so on. electronic energy ...