Power Bank Portable Charger 20000mAh RAVPower USB External Battery Pack Dual iSmart USB Ports Ultra Compact Phone Charger Compatible with iPhone 11 Pro Max Galaxy S10 Note 10 iPad Pro Android Devices

Did not live up to expectation. I fully charged it overnight and used it to charge my iPhone 7 plus which was at 30% two times. Afterwards it became 50% charged.I tried this multiple times and I am getting similar behavior. According to the advertising it should charge an iPhone 8 plus 4.8 times. That does not look to be true based on my experience.Update:After posting my first review, the seller contacted me and sent me a new charger (without having to return the old one)The new one holds the charge well and meets expectation.Five star for the awesome customer service.

I took this unit overseas with me. I attached it to my phone when I was using Google Maps which is a battery hog. In the nine days of use each day, I never ran out of power. I was outside walking for many hours per day.On the worse day, after 5 hours of use, the battery pack was at 50%. I would recharge the device each night and have plenty of power for the next day. It is a bit bulky and weighs alot but, I had an 8 foot cord and carried it in a backpack as I walked the streets of Valencia, Spain. One of the best purchases I made for the trip and one that will be used when I travel to coin shows and use the phone.The system has 2 usb connectors on the front, with a mini usb as well. The system comes with 2 shorter cords to use, and I use those to charge this unit with an a/c usb phone charger. Simply bring your own usb phone cord that fits your phone and you will have enough power for whatever you wish. I did not attempt to test this on any other device other than my phone, so I cannot speak for that. If I had to guess how many full recharges I could get out of this unit for my phone (at the time it was a LG G4) I would say between 4 to 6 full charges. I simply used it as a trickle charge and it did excellent.

Starting from the packaging to the build quality RAVPower delivers on the premium level.The bank came not only with the soft pouch, but also with a set of two flat usb cables.Spec wise I've measured about 1.7A on both input and output and about 65Wh,which is a much better performance then many other cheapo chargers I had before.Size wise it is not that much bigger then my Note 8 (but obviously much bulkier and heavier).On a negative side output ports are marked as iSmart but my Samsung fails to recognize it as a Fast Charger.Overall it's a solid performer. If you prefer a 3-port model then it's close cousin can be found here: RAVPower 22000mAh Portable Charger, High Capacity Portable Battery Pack with 3 USB Ports

If you don't mind lugging around a device that weighs about as much as a brick, then this power brick from esteemed manufacturer RAVPower is good enough to keep you going for a week. This is the third RAVPower charger I've bought and all are similar. They're as powerful as their spec sheets say they are, they are built tough, and simplicity and raw power are the key attributes.Like many of RAVPower's chargers, this one has a tough mesh bag to keep it protected, and a price that's about half the that of its equally capable competitors. I like it. But the downside? You'll be carrying around a one-pound nondescript bundle of batteries surrounded by metal, and its only indicator of remaining power is a quartet of vague LEDs rather than precise numerals. So what? It's a worthy addition to your survival kit, wherever you might need it.

Very heavy, but seems to be built well. Comes with a cloth like cover. Love the size. Very simple in the design. Takes time to charge, which is expected since it is so large. Last a long time. I use it at work, plug my phone into it, along with my bluetooth speaker, and sit back and listen all day, without either device dropping battery charge down. It uses about half the charge when I do this. Take it home plug it into an outlet with a USB charger, and it charges back up & ready to go the next day of use. The prices was very good I feel for the size and quality.

I use this to charge my iPad and iPhone when I travel and at home. It has multiple chargers in it for both devices and is reliable and works great. My family has also started using it. If you haven’t had a bigger battery pack it does take a little longer to charge and is heavier than the smaller ones I’ve had in the past but it is well worth it as I go days without charging it. It also has 4 lights that indicate the charge so there is no guessing.

I unboxed this battery and got good use out of it, but only for a few days. Now when I charge it, one of the blue lights is on but it takes in no power. That's right, it's completely useless.I had previously bought a RAVPower battery before buying this one. The plastic shell broke quickly, but I decided to give this one a chance because of the good reviews. Now I will not buy any RAVPower products. It's absolutely unacceptable that a product become useless after no more than a few days.Anker batteries have proven to be all around better buys. RAVPower products cost about as much as theirs do, but break down quickly after mild use.

This charger is great it holds a charge forever ( or so it seems). I have charged my I phone and my I pad mini from almost out to 100% and the charger still had almost half the charge left. I also charged my phone from dead to 100% in a little more then an hour. This thing is great! The one drawback is the weight. But, that’s ok because it works so well.Thank you folks and keep up the great work!!!

This works well, I keep it charged up for power outages.

Bought to power my Raspberry Pi and video screen. Worked perfectly. Used it for hours and it didn’t drain a bit

Good to have while traveling by car

It gets charge so quickly I just got it but so far I am OK with it

très peu à la hauteur de mes attentes