iPhone SE 2020 Battery Drain at Random

Thanks Jack-19. I guess I forgot to mention that I've already read all this articles, this is why I'm posting my question here.

Btw, this is as today, Monday 7th, at 11:07am. Last charge was yesterday at 8:32am. This is the most my battery has lasted, so far.

Same configuration, same apps, same usage. Only thing that differs is how I charge the phone. I'm only concerned about going out on a trip on my motorbike and encountering this situation again. I always carry a powerbank, though, just in case.

Hi Alancito. Sure, my iPhone is 5 months old and its battery status is normal at 100% capacity. This has nothing to do with battery capacity, there's something in iOS & its Smart Charging that fails when connected to a different charger. I always charge my phone overnight on an Anker wireless charger. The problems arise when charging using the lightning cable that came with the phone. Something misbehaves and suddenly the phone discharges by itself. There is no app draining the battery, nothing unusual has happened that day (I mean, I haven't done anything different).

One night I left the phone at 40% and in the morning it was dead, then today it's been 27 hours since I fully charged it and I still have 38% of battery remaining, though tonight I was on Youtube for 1 hour, give or take.

Best regards.