Anker Power Bank(PowerCore 10K),Compact Travel-Ready 10,000mAh Battery Pack with PowerIQ Charging Technology,5V/3A High-Speed Charging for iPhone,iPad,and More (USB-C Input and Output（Black），1pack)

I have an iPhone 13 Pro Max, and the battery drains pretty quickly these days. My wife has her own Anker battery pack that charges my iPhone fast, so I decided to get a similar battery pack from Anker. This pack charges up pretty quickly, and has three different USB charging ports: USB-A, USB-C, and micro USB. I used a USB power monitor to determine the voltage and amps, and energy delivery is at 1.47 Amps at 5.24 volts. I charged my phone from 50% - 88% and the battery never got hot, and it doesn’t get hot when charging the pack back up. The capacity is outstanding at 10,000mAh. My phone has a total capacity of 4,352mAh. With this battery pack I can get two full phone charges (0 - 100%) out of it. The slim design fits easily in a pocket and is smaller than my phone. I really like the convenience of being able to charge my phone and/ or other USB compatible devices on the go. * the iPhone in the photos are the standard iPhone 13, not the Pro Max

This is a great little device. Came aready charged, though not at full charge. Have charged it up since and hasn't let me down!

Purchased these for an extended outdoor trip and they worked fine to keep two phones charged. Basically if you are in place without recharge capacity and need to keep your phones charged, put your phone on Airplane and Low Battery Mode as much as possible to reduce usage by draining apps, and if you do that, your phone will last say a day or a bit. One of these will recharge two phones completely (Iphone 12,13 Pro and more recent models) and may have about half a phone charge left. I tried and tested this before the trip and that metric was accurate. As for recharging these chargers, that takes 4-6 hours depending on the speed on your charging wire. Good to have on trips and on the go if no access to electricity or if you are moving about a lot. The interface is a bit simplistic with 4-5 dots (I forget) which light up fully if fully charged. If there is one dot left it means there is about 20-25% of the power left and so on. That's all you will see. This is also light and slim - another plus. Not tested on non-phone devices.

Great for recharging fast top up and recharging

The Anker Power Bank (Power Core 10K) is compact enough to fit in your pocket and the battery lasts for several iPhone charges. I would recommend this product!