AnkerPortable Charger 2-Pack, 20000mAh Battery with 20W USB-C Output, Supports Power Delivery, 525 Power Bank (PowerCore Essential 20K PD) for iPhone 15/14 Series, Samsung, iPad Pro, and More

I take this charging block on vacation as I drive 24 hours so it’s very much needed and it exceeds every expectation by far. It charges my phone while I have my gps on for the whole trip also my wife’s phone and it barely looses any juice. I keep my iPad charged also while on vacation and I’m pretty sure this thing would last us the whole time without even being charged. It’s highly recommended. Bit of weight to it but who would want a cheap light one? I’ll always have one of these on deck in case on emergencies definitely might buy a couple more.

Holy crap! I bought this 2 years ago for an international trip. I charged it. Took it and used it briefly here and there. Anyways, it's been sitting there for 2 years and I just picked it up again and it's 75% charged! I'm not even sure it lost any battery. This is amazing.

My go-to portable charger. It quickly charged my pixel phone and the size of it fits perfectly in the outer pockets of my bags for easy access.

I've had this power bank for 3 years and it's still delivering as promised. The only comments I would have is that it's a little heavy. Many Asia & SE Asia airport security screening dudes ask to see it, but have always allow me to carry this 20 watt unit on.

Works well. Charges up slower that it charges other devices. Use at least a 30 watt charger (USB-C to USB-C) to recharge it. A 5 watt charger will take overnight to charge it up.It is a little large though and can not be used on air flights and may not even be allowed to fly on some airlines as baggage, you will need to check if that is your purpose.

This review is for the "Anker Portable Charger, USB-C Power Bank 20000mAh with 20W Power Delivery".Edit 2015.09.15: For the last six months, I've had a regular pattern. I wasn't intentionally setting up an A/B test, just trying to have a routine to make my life simple. I've been rotating between this unit and the competitor (I don't know if calling out other brands gets reviews unpublished, so I won't - but I'll tell you that the other one advertises 26800mAh, it's the same geometric shape and size, and has a numeric "segment" display of the charge remaining). While I'm using this one to charge my phone, the other one is charging.How frequently I charge my phone varies. I for sure try not to leave it charging when it's 100% (in fact I've been trying to disconnect at about 95%), sometimes if I'm going out I'll charge it accordingly (like it's 50%+ but I bump it to 80%, or it's 22% and I let it get to 40% before a quick outing).But regardless of that, the evidence is clear and consistent. The Anker delivers more charge than the other one. The other one is almost precisely one-to-one with my phone. That is, if my phone is at 60%, and the battery says 35% remaining, it will get my phone to mid-90% before running out. The anker doesn't have the convenience of a numeric display, just the quad dots (which is part of what took longer to make an absolute conclusion), but over time it's clear I get about 225% of phone charge out of a fully charge Anker battery. So I'm bumping my star rating again. Not to 5, because that's still below advertised, and just because one competitor is much worse doesn't make you perfect.I also recently bought an Anker rated for 10,000mAh mainly to keep a few other things charged. Just for funzies, I'm going to take use that other brand charger for the other stuff, and I'll swap back and forth between the two Ankers for a while.Edit: Immediately after submitting this review, I ordered a competitor's similar product that lists about 35% higher capacity than this one. I conducted a similar test, and found that the competitor's product provided about 35% more charge of my phone. More investigation is needed, but it does seem the culprit in the small number of recharges per full battery charge is my phone. I'm bumping up to 3 stars pending further testing. (I might have gone higher, but the other product was $25 cheaper than this one lists now and I paid 10% more than it currently lists for.)In spring 2022, I finally ditched Samsung and got a Pixel 6 Pro. One of the benefits of this was getting rid of the micro-USB interface, whose cable connectors fail if you look at them wrong, and having USB-C. Since my previous Anker battery could only be charged using its micro USB port (and was starting to act flakey anyway), I opted to get this model so I could be rid of the dependency on micro USB cables.It's quite noticeably physically smaller than the older one, but I figured they had worked on higher storage density. (And, admittedly, the old one was rated 26800 mAh.)I tend to be pretty haphazard about when I plug my phone into a powered port to charge it a bit, when I connect it to the battery, and when I connect the battery to charge, so while I was suspicious pretty quickly about the capacity, I didn't have a good metric. So here six months later I decided to check carefully. I left the battery connected to fully charge overnight Monday night. Tuesday morning, my phone was at 27%, so I took the battery from the wall charger and fully charged the phone. Thursday morning, the phone was at 30%; I fully charged it from the battery. Today, Saturday morning, my phone was at 9%. I connected it to the Anker, it charged to 15%, and the battery was done. So I got about 1.5 full charges of a Pixel 6 Pro.By the way, I've found (and you can easily find) independent testing that says the P6P has about 5kmAh capacity. 1.5 charges does not remotely square up with the claim of 20kmAh. So maybe I got a dud?On the plus side, when it is charged, the rapid charge works very rapidly!That is not an equal weight feature to the capacity, though.I very much do not recommend.

Holds a charge for quite awhile after fully charging it!

Very good no issues