I have in the bathroom a grand dame portable radio are the daily minimum half an hour running. At first I wanted to build a power supply, but with 5 mono cells from Duracell has the radio made over a year Music. Since I risk any damage by a self-built power supply. For other applications such as electrical radiator valves, remote control, camera, computer mouse .. If battery is not good comes in ne Duracell. Finished! Almost like water from a tap. But be careful! There are 3 Duracell series. I buy only this expensive option, so the statement is true only for the Duracell plus.
