Customer Ratings & Reviews

This power bank by Tzumi came in-clutch during hurricane Irma. Can charge most smartphones today at least 5-7 times over. Should have at least 2-3 power banks, 10k mh-20k mAh/per person in an household. Great value, where Mophie's is 4-6k mAh, but almost 2-3x the price. Was a little skeptical at first with a no name-brand power bank, but it has exceeded my expectations with the fast charging.

Overall a great product. Wen I reserved it in the mail it came in great packaging and in grate condition. The 12,000 MAH battery works really well and have not had any problems with it. So fare I recommend this product. The only cone of this product is it gets dirty easy.

This battery bank was perfect for a day or two out but not much more. Used it to recharge my Samsung S8 about 3.5 times. THIS WILL NOT TRIGGER FAST CHARGE FEATURE. It seems to take forever to recharge the bank itself too. On a 2 amp charger, it took 4 hours to charge it from half to full. I bought it on sale too so it was perfect for the price. The build quality seems decent but it might break on a waist high drop. The cool thing is being able to charge two devices simultaneously.

I purchased the portable charger for driving vacations. The in-car utility ports for charging phones is not sufficient enough to get a good charge on a phone. This portable charger is exactly what is needed.

Bought this portable charger for our Disneyland trip and it worked great. It kept our 2 phones (iPhone 7+) fully charged and still had plenty of juice left.

The charger is awesome and it works very well. I like that it does not take long to charge up.

Most devices charge smoothly as advertised. My smart phone is iffy at times. Don't know if its the phone or the portable charger. I like the 10,500 mwh capacity. I have multiple tablets and (grand-kids) cellphones. I will find out why my phone is not working consistently

Awesome battery pack for iPhone and iPad Great for staying charged for Pokémon hunting all day lol

Bought for Pokemon Go, I run a Galaxy 5. Does really well even for those days out when you run your phone down. and need the extra charge for navigation or whatever else you need. I'll probably always carry it now. I get maybe 3-4 full charges..hard to say but I can spends hours without worry playing pokemon go , watching videos, playing apps.

I had never purchased a portable charger before so I asked the sales associate which one they would recommend. I ended up purchasing this and love it. This thing lasts FOREVER. I was able to get 5 full charges (dead to 100%) on my iphone 6 plus and it still has plenty of power left. It's relatively small, about the size of an iphone 5 but a little thicker than that. It's easy to use as well. Just plug it into the wall to charge the battery. When it's full, just plug your device in and press the power button and blue lights come on to show that it's charging. I love this device.

Bought this to use for New York Comic Con 2016. I charged it fully before using and then took it with me. My two kids and I charged our iPhones multiple times throughout the day (whenever we would be waiting in line or sitting in a panel) to keep us all at 100% in case of anything. We made it through the 9 hour day there plus able to top off our phones on the car ride home and still had plenty of juice for additional charges. It worked so great I bought a second one for when we went our separate ways. Would definitely recommend this product.

Bought this for my son Pokémon habit. Walking around drains the phone pretty quick but this charger fixes that. Had two ports to charge 2 phones. It charges an android and I phone quicker than the wall charger. Probably twice faster than a regular charge. Fits in your pocket and haven't noticed it getting hot. Last a couple of days of charging.

Charges your phone up to 5 times. Takes a long time to charge. But was worth it in 2016.

Holds the charge for a few days before using it and then it says it charges the phone four to seven times, although I have only gotten 4 charges from it, which is good enough. I also can charge two phones at a time, not too bulky, fits in a purse or a big pocket. Great for those days when you are using your phone a lot for maps and photos! Or on a week long hike!

I shouldn't, but I chuckle when I see people in airport lounges sitting on the floor, huddled up by an outlet, trying to charge their tablets and phones. I carry this portable charger with me whenever I travel, and it will recharge my iPad, iPhone, and iPod at least a couple of times. I just sit in my lounge chair (or my seat on the airplane) and plug my device into the PocketJuice. I also use it when I just want to go out to a coffee shop for a few hours and do some work on my iOS devices at bluetooth keyboard. It does take a long time to fully recharge, but once it's done, it holds on to that charge for weeks, and when I need it, it's powerful enough to handle my small iPod or my 9.7" sixth generation iPad.

This is the best value, portable mobile phone charger I have ever used. I was skeptical because I was unfamiliar with the brand, but I'm glad I gave this product a chance. Its output is 3.4a vs. the average 2.5a or 2a output of most other name brand chargers. Its output is fast enough for fast charging, yes, fast charging and it can fully charge my Galaxy Note 5 over 2 full times. The charger takes a long time to charge (which makes sense), but I gave it 4 stars because the exterior material is soft and has begun to wear. Aside from that, I love it.

bought a few of these for camping. we were going off grid for a few days in the northwest tall trees and wanted to have our music and audiobooks. they worked fine, able to charge our android phone a few times and recharge my fire tablet to watch a few short shows at night. they are a little heavy for back packing. my husband uses mine now when he works double shifts it keeps his phone going for hours and hours with lots of constant use. I have bought the smaller 3000 pocketjuice and they worked so nicely for a long time we tried these. my abusive teens have broken one charge port on them but since they have more than one, its still in use.

Fantastic portable charger! Really decently priced. Charges super quick, up to 2 devices at the same time. Fully charged, I can use just this portable charger and keep my phone and smart watch charged for 3 or 4 days!

My wife and I love to travel and always felt the need to have a good portable charger. To me performance is important but at the same time as a frequent traveler I look for sleek, compact and robust portable devices. This charger met almost all my requirements. It provides very good back up, the battery lasts really long once fully charged. The charging is really fast and we have been really happy with it. We carry it pretty much everywhere we go now. It's a great device to have but its charging cable takes away that 1 star away. The cable is really short and it stopped working for me in about a month. Thankfully the charger works fine with the Samsung tablet charger that I had. If you are looking for a nice looking and really effective portable charging device this one is definitely worth giving a try.

We Bought this to take on a trip to Disney. Charged it up went about our good time when our phones started to die I plugged in 2 at a time within 30mins I had them both back up to full charge one was from 10% the other from 20% used it for the 3rd phone and still had enough juice left for 2 more days. I charged it again and went to Daytona beach with it and same result. My Salesman at Best Buy suggested I buy this one it was lower in cost but with more power than some other name brands. That's what keeps me coming back to Best Buy they are not always out for the money but the best deal for there customers