If I don't keep my phone at 100% while at my desk, and then I go out somewhere after work, there's a chance my phone will run down to 0% while I'm out, potentially stranding me somewhere.
I don't think that's OCD. It's just planning ahead.
If I'm in an area with good connectivity I can easily last two days with my OnePlus. On the move, though, or in bad signal areas, and 20 hours might be the limit.
I don't think that's OCD. It's just planning ahead.