Only good in a predicament

I bought this only because my phone was close to dying and my charging port was dead, so this was quite the impulse buy. That being said, I'll begin with what I did like first:PROS-Strong magnet, does not fall off even with strong shaking-Slim form factor and solid design-High quality brushed metal finish-Simple design, only 1 button and 5 or so LEDsCONS-VERY slow phone charging, advertised as 15W but that is if you use the power bank on your phone via magsafe as well as a cable, magsafe charging on its own is only 5W. I have an 11 pro max currently, and if I use my phone while this is attached, it will not charge- Heats up pretty quickly as it does not have good thermal regulation (likely due to its slim design), meaning it also cools down slowly-Long ... MoreI bought this only because my phone was close to dying and my charging port was dead, so this was quite the impulse buy. That being said, I'll begin with what I did like first:PROS-Strong magnet, does not fall off even with strong shaking-Slim form factor and solid design-High quality brushed metal finish-Simple design, only 1 button and 5 or so LEDsCONS-VERY slow phone charging, advertised as 15W but that is if you use the power bank on your phone via magsafe as well as a cable, magsafe charging on its own is only 5W. I have an 11 pro max currently, and if I use my phone while this is attached, it will not charge- Heats up pretty quickly as it does not have good thermal regulation (likely due to its slim design), meaning it also cools down slowly-Long charging times - I haven't timed it myself, but I would estimate it takes about 3ish hours to charge the power bank from dead to fullAll in all, I would not recommend this product to the majority of people, but for people who need just that little extra bit of charge on their device, it'll do the job adequately