ultra capacitor 1.Voltage: 5.5V Value: 0.15F, 0.22F, 0.33F,0.47F,1.0F,1.5F, 4.0F 2.Can ... be back-up cource Coin super capacitor,farad capacitors,ultra capacitorSuper capacitor,ultra capacitor,gold capacitor,farad capacitor,super capacitor battery,low ESR super capacitor,power supply capacitor ...