[LorenPechtel]

And no mention of the self discharge rate.

[rpaddock]

For a similar part in this class:

Low Leakage Current as small as 1µA Low Self-discharge rate, 72 hours @ discharge <5%

https://abracon.com/datasheets/AHCR-S04R0S.pdf

The more the Farads the higher the leakage. The higher the tempature the higher the leakage.