Best portable charger for iPhones in 2023

It’s a horrible feeling when you’re out for the day and suddenly realize that as you’ve been snapping photos, texting, and FaceTiming, your iPhone isn’t going to survive the next six hours you have planned. I mean, how can you possibly record a concert in is entirety when you realize your phone is only at five per cent as you take your seat? Or in terms of safety, notify your emergency contacts if you find yourself in an emergency?