I should also add that I take a pi away on holiday.
It’s a kodi machine and it has a RTC module fitted (I’m just lazy and only like to set the time once in a different tz)
Anyway, the unit came without a battery (batteries are bad as they need replacing and can sometimes leak damaging may be both the RTC and the pi.
So I fitted a 1.2 farrad (yes more than a whole farrad 
, though since then I’ve found 4 farrad capacitors (and all coin sized equivalents), but you have to ensure the voltage is good for at least 5.3v) and that kept time on the pi for 4 months without power.
Not really relevant to the thread but saves buying replacement batteries, is good for the environment and prevents possible damage.
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