Mind you, my iPhone 12 battery never fully drains on a day to day basis — but I got 7 iPhone charges off of one power bank change. Impressive! Even comes with a nifty mesh carrying bag.

I've been using this now for about two weeks. I replaced a 9000mAh battery that finally died. This device is rock solid! I charged my completely dead cell phone and when I unplugged my phone after it was plugged in overnight, the Anker still had four lights indicating a full charge. I'm on the road a lot and my cell phone is used constantly and having a good battery backup is essential to me completing my work. I can tell this is a quality made, high performance battery backup that I anticipate using for years to come.

Not much to say about this. It is able to charge any USB device and does so far quicker than the USB 3.0 ports on any computer I've tested. The batter does take about 24 hours to charge from 0 to 100%, however once charged it can recharge my phone (iPhone Xs Max) 4 or 5 times and will charge the phone from 10% battery to 100% in approximately 1 hour. 10% to 80% in about 30 minutes. I bring this with me any time I travel and consider it to be an essential travel gadget.

Love love love this.

I have been using this for Pokemon Go for the last six months and had zero issues with it. I use it a ton and it holds a charge longer than I've ever needed it to. I took this on my trip to Go Fest in Chicago and it was flawless (flew on the plane as a carry on with no questions). I had another battery prior to this and had so many issues. Once I switched to this battery I haven't had a single issue. Well worth the extra money it costs vs other products. 100% recommend.

I have used this a good number of times to charge my Pixel 2 and it still shows full charge. I'm satisfied with the charging speed and size of this. Powerful backup battery in a small-ish package. Don't get me wrong, it is hefty if you plan to take it on hike or something like that. But if it's an EDC item, it's a good thing to have.

This portable charger will charge many times. I have charged my 4100 mAh phone 2x and still at 3 of 4 light status. Only problem is the size and weight but that's what you get for the charge capacity. Great product.

Chunky unit,a bout twice the size of the average 2-3 charge backup units. Easy to chart using the dual cables included, tested and was able to recharge 3 cell phones and a tablet (twice) on one charge. So testing completed it is now charged for emergency usage (proactive planning for future winter storm events and long term associated power outages here in Texas as I don't anticipate they will spend the $$ to fix the power grid, as they'd known about these issues since 2011 already. :( Sigh...

This is my second one -- because I decided having two PowerCores would be better than one when a storm hits and the power is out for days and days. The first one has provided an easy power source for the two years I've had it. Based on previous power packs I've had, I support the recommendation to drain and recharge the PowerCore every 3-4 months for long life and have been fairly diligent in doing so. This time I got the dual charger along with the hard shell case that was so handy with the first, and was blown away by how quickly the PowerCore recharges with two cords. Knowing I'll have music/DVDs and phone (assuming the towers are standing) is a big relief when a hurricane is brewing, and I owe that to Anker.

This thing will charge any device you throw at it, but won't do fast, I have a Samsung note 5 and it does not go into fast charge, even though it has IQ charge! UPDATE: 11/28/17 Anker customer service contacted me through e-mail, I was not totally impressed with what I purchased, she explained to me that Samsung uses Qualcomm quick charge and ask me to send her the charging rate times to charge my note 5, in the end they sent me there Powercore+ 26,800. This thing is a beast, it has 3 usb ports, 1 of the port can to Samsung Qualcomm quick charge 2 and 3, I verified it does go into fast charge on my note 5! Anker customer service is one of the best out there and they stand behind their product!!!!