Customer Ratings & Reviews

Perfect size backup same size as my Samsung S7 not too heavy. Can get multiple charges before I have to charge up to backup highly recommended

I bought this to take on a four day, three night campout. I used it several times to recharge my phone, my drone and my camera. At the end of the trip it still had 50% left. Very pleased!

I used to have a old model but i gave it to my sister, now i bought these one, it works perfectly too. I use it on my travels and i share the charge and still remains enough for more.

This is perfect for the traveler. Whether you are hiking, biking or playing tourist, this portable charger is awesome. It charges my GoPros and my iPhone very quickly. A Must Have!

Charge overnight to store power. Will then charge my Apple 6+ at least 4 times from under 10% to full at least 4 times and still show 60% power remaining. I would definitely recommend.

So after debating on this for a week or so now I finally picked one up tonight. Out of the box it still had 69% charge on it. It came with a Type-C to Type-C and USB to Type-C. It seems that the USB to Type-C was broken at somepoint and when trying to use to charge, I get the "Slow Charge" warning on 2 different devices. The Type-C to C cable works great though. I was able to use a different cable to charge my S10+ and it worked just fine. Debating on whether to return it or not... Otherwise, so far everything else about it is great. It is a lot heavier than the 10,000 version which I also have, but it is twice the battery. Anyways, buyer beware.

I bought this power bank to keep my phone charged while I’m riding my motorcycle but ended up pretty much taking it everywhere with me. 11 full charges on phone off one charge.

Bought this charger to take on our honeymoon to Disney to charge all of our electronics and it kept us going great. Got lots of beautiful pics! Very nice pocket charger loved it!

Girls were in line for concert 10 hrs and the 3 he concert. Fully charged 3 times and at end of night was only at 89, then two weeks later still had 89 parent charge!!! It's amazing

This charger better than I thought it would be. After fully charging it, I have charged an iPhone 7 four times and an iPhone 6 Plus twice and I still have over 90% of a change left.

With this device I don’t have to worry about any of my devices running out when I’m not home. It has plenty of power to charge the phone, iPad, watch, etc. Glad I bought it

if you're going to carry around a charger you might as well get one that can fast charge your phone and give your a digital read out of the percentage left on the charger itself

My job has me traveling around a lot and this charger helps me keep my iPhone and iPad charged. I took off one star because it uses a c connection, which is the only drawback for me.

This is by far one of the best battery chargers that doesn't take an iPad Pro 12.9" as a problem. It will get your iPad charged as you are still doing your work. Great job Tzumi!!!

The device is great for keeping several phones and iPads charged when travelling. I have used it at conferences to charged my iPhone where no electricity is available.

I have bought a battery pack cause of me being on the go all day and I have to say I charged my phone more than what the amount of times it say it will would recommend.

So far, it's the best charger I've gotten so far. Takes a while to charge but it lasts a long time. Great to bring for an all day trip to Disneyland.

The brick is a little heavy. There might be some more light weight options. But this has a ton of charge capacity, and I got it for a great price compared to others

Recently my daughter and son-in-law took my wife and I to Ireland and Holland for my 70th birthday. I didn’t even use half the full charge. A fantastic piece of equipment.

Love this battery; it lets me charge my phone fully from 0% to 109% a good 10x . I only wish the charging wire for the battery was longer when plugged into outlet.