Videologic DAB Tuner - station memory not retained long.

[FrankE]

I've a standalone DAB tuner which I'm using until I an find my remote control for my Naim streamer.
I only listen a couple of days a weeks so I power it down most of the time.

There's a supercap stores the station settings a Panasonic SG 5.5V 1F

https://uk.rs-online.com/web/p/electric-double-layer-capacitors/8690771/

I logged the voltage over 24 hours and it has gone from 3.12V down to 2.46V.

Normal or worth swapping ut with a 1.5F supercap?

https://uk.rs-online.com/web/p/electric-double-layer-capacitors/8690783/

Hmm the 3.6V ones are 2000h, the 5.5V ones 1000h.