How about a high quality switching ‘wall wart’
The Version II head is more compact and lightweight
76" External Width - Metric 105mm Enclosure Type Junction Box Enclosure Material Thermoplastic External Height - Metric 70mm IP Rating IP65 Product Range Europa Series Body Colour Grey NEMA Rating - Other details
These batteries are used with JVC's GY-HM100U
KEMET FCS0V224ZFTBR24 Supercapacitor, EDLC, 0.22 F, 3.5 V, FC Series, +80%, -20% Tiffen 6666PEARL2 How about a high qualityThis is a Supercapacitor, EDLC, 0. 22 F, 3. 5 V, FC Series, +80%, 20% product from KEMET with the model number FCS0V224ZFTBR24Product details Capacitance 0. 22F Voltage Rating 3. 5V Capacitor Terminals Product Range FC Series Capacitance Tolerance +80%, 20% Packaging Each Lead Spacing Lifetime @ Temperature 1000 hours @ 70C Operating Temperature Min 25C Operating Temperature Max 70C ESR 50ohm Capacitor Case Style Radial Can SMD Other details Brand