ZMI QB820 PowerPack 20000 USB-C Portable Charger Power Bank Battery Pack with Power Delivery USB Hub

This is a great power bank. To give you some examples, it will charge very fast from the Apple 87w charger. About 3/4 full in a couple of hours (quite hot), and then it slows down to a trickle. It also charges from the 29w unit, which has a lower top voltage.It is able to fast charge my iPad Pro which also charges fast from the 29w unit, but not from the 87w unit. All in all, it appears to be more flexible on input and output voltages than the Apple units.It will charge a MacBook Pro, but what lets it down is that it does not seem to be able to charge *from* a MacBook Pro, as the battery seems to treat it as something to send power to, rather than receive it from. But it charges so damn fast from the Apple charger that I still give it 5 stars.Looks wise it is fine. 20,000 mAh is what it is. Price is high, but where else can you get a sizeable battery that will fast charge anything you throw at it, including a MBP, via standard USB or USB-C, and recharge 3/4 full in 2 hours?

I bought this for travelling with surface pro and S10 android phone. It is slim and light and has been excellent for rapid recharge of phone and laptop. Phone went from ~25% to 100% in <20mins. Haven't done a time for surface pro. I was going to buy a powerpack with 60000 but they seemed like a big heavy brick and tricky on airlines. This one is 45W with usb C ,works fine with Surface Pro but lightweight and allowed on planes in hand luggage. Perfect

Great product, arguably the best all round power bank on the market that supports both QC3.0 and PD.This will quick charge my iPhone X to 50% in around 30mins. It’s super fast.Capacity is enough to last a few days. I’ve used the power bank under heavy load, with a mixture of watching Netflix, browsing and social media.Be sure to buy a PD supported wall charger, such as Anker or Apples 30w, 61w or 87w charges that come with MacBook Pro’s.

At 45w in and out, It’s the top performing USBC battery pack you can buy on Amazon.

basically like having 10 of my phones battery in one powerpack, quick charge with usb-3 or usb-c. since charging it I have carried it around in my backpack its been charging my phone, nintendo switch and other peoples phone, i only had to charge it about 3 weeks later after regular use.