Charging Issues

All of a sudden on the weekend my phone is charging extremely slowly using any wall or car charger. It doesn't vibrate when connected to these cables, as if it doesn't recognize them. It does charge, but plugged in for 8 hours last night, it went from 15% to 60%.

Oddly though, when plugged into my laptop at work it seems to work just fine. Vibrates when connected, prompts me if I want to allow photos, and seems to charge at a regular rate (gone up 5% in the last 10-12 min).

Any ideas? I've got a genius bar appointment tomorrow as I have about 2 weeks left on warranty, but thought in the meantime i'd see if anyone had come across something like this.

ETA: Don't think it matters... but iPhone SE, 32 GB, ios 9.3.3.

Thanks.