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Tzumi - PocketJuice Endurance 12000 mAh Portable Charger - Black-Front_Standard

Customer rating

Rating 4.6 out of 5 stars with 1461 reviews

95%
would recommend to a friend

Pros

Cons

Customer ratings & reviews

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  • Rating: 1 out of 5 stars

    Pass on this charger. Not reliable.

    Posted
    Jhltrvl
    • My Best Buy® MemberMember

    This is my first time writing a review because I’m so disappointed. I’m writing this while on vacation in Japan, because this is my second charger that has quit charging on me while on vacation! That’s when I need a charger most!!! My first charger- quit charging In less than 5 charges. It was within the 1 year warranty and even though I just wanted a new charging cord, I was sent a whole new unit, which I appreciated. It worked out that I got a whole new unit because the new charging cord did not work on the old one. The second one I received worked fine for a couple of international trips but now, it’s not charging again! I’m on day 4 out of a 16 day Asia trip! Only one bar lights up and that does not mean it is charging. My cord looks fine, nothing has gotten banged around, dropped, or wet, just like my first charger. It’s just frustrating. I would look into another brand instead. Also, I can’t compare to other portable chargers with the same power but it does get heavy if you’re carrying it around all day sightseeing. Other than being a little heavy when you’re walking all over a foreign city, when it works, it’s great. I can go several days without having to charge it but get something else more reliable. Now, I have to worry about my battery life when I’m out and about taking pictures and take a plug with me to charge while at a restaurant or something.

    No, I would not recommend this to a friend

  • Rating: 5 out of 5 stars

    Lots of power

    Posted
    Sisco
    • Verified PurchaserVerified Purchase
    • My Best Buy® MemberMember

    I bought this charger when it went on sale. I dunno why I haven't purchased a device charger before as it is a must have item. The sync cable that comes with the device is pretty tiny that is the only negative thing I can say about the device. I like the fact that this model has two charging outlets and the charging speed on this model is faster which helps. You get more charge power with this model but it is bigger and a little heavier than the other models. I found that the 8000 model was the right size for me but if you chew through your battery on your device than the bigger models may work for you. I would also recommend finding a battery charger with the ac adapter already builtin but this serves my purpose. I had another issue but I do not know if it related to the battery brand. I charged the battery with an apple ac adapter and the apple ac adapter quit working. I tried another apple ac adapter and that one stopped working as well. However, after several days of not using the apple adapters they started to work again so it hard to say if it is related or coincidence.

    I would recommend this to a friend

  • Rating: 3 out of 5 stars

    Stamina Great - Speed not so much

    Posted
    Mike34
    • Verified PurchaserVerified Purchase
    • My Best Buy® Elite Plus MemberElite Plus Member

    I purchased prior to heading on a 7 flight trip back and forth across the US. The stamina of the unit is great and I was able to charge 2 devices simultaneously. I discovered that doing so obviously slows the recharge so I chose to do 1 device at a time. I plugged in with 14% left. After three hours my device was at 36%, and finally after 9 hours it was 100%. I resorted to keeping the Tzumi plugged into my device, which is very heavy and unruly. Question to Best Buy/Tzumi - are there cables that will assist speed of charge? I thought the 3" cable that comes with the unit was specifically designed to make faster flow. Apparently not.

    No, I would not recommend this to a friend

  • Rating: 4 out of 5 stars

    Great portable charger

    Posted
    arTraveler
    • Verified PurchaserVerified Purchase
    • My Best Buy® Elite Plus MemberElite Plus Member

    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.

    I would recommend this to a friend

  • Rating: 4 out of 5 stars

    Great Value

    Posted
    mmate
    • My Best Buy® MemberMember

    Really nice portable charger. I fully charged it up once before heading to a trip to Scandinavia for a couple days and was so happy I had it because my adapter didn't work! It charged my phone, kindle, and Apple Watch and still had one bar by the time I got home. The only thing I don't like about it is that the blue lights constantly flash when you're charging your device on it and it's super annoying if you charge it while trying to sleep because the lights are so bright. I haven't tried it yet but I think a piece of duct tape over the lights would work just fine for that problem though--just not as aesthetically pleasing and you would have to take it off to see how much the thing is actually charged.

    I would recommend this to a friend

  • Rating: 4 out of 5 stars

    Takes forever to recharge but good for price.

    Posted
    LeeH
    • Verified PurchaserVerified Purchase
    • My Best Buy® Elite MemberElite Member

    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 would recommend this to a friend

  • Rating: 5 out of 5 stars

    All you need

    Posted
    ERea
    • Verified PurchaserVerified Purchase
    • My Best Buy® MemberMember

    I bought this to camp outside Best Buy for black Friday. The first thing I love about it is that it comes fully charged. I needed that since I was already camping when I bought it. Second was that it doesn't seem to slowly loose charge over time when your not using it. It charged my Galaxy S7 Edge and my son's IPhone 6 two times each. Seems durable and the material is not slippery so you won't be dropping it often. The size is to be expected with so much juice and the weight is not bothersome to me at all. Best buy will price match plus the costomer service and knowledge at Best Buy is second to none, leaving me with an easy decision. Look no further, this is a GREAT buy. A Best Buy!

    I would recommend this to a friend

  • Rating: 4 out of 5 stars

    Great Value!

    Posted
    TeacherTim
    • Verified PurchaserVerified Purchase
    • My Best Buy® MemberMember

    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.

    I would recommend this to a friend

  • Rating: 5 out of 5 stars

    Perfect for long trips

    Posted
    Theguyoverthere
    • Verified PurchaserVerified Purchase
    • My Best Buy® MemberMember

    Recently had a long trip that required 8 hours in airports and on airplanes as well as about 10 hours a day for 3 days in a conference. There weren't many opportunities to charge my phone so this portable charger helped out a great deal. I had no issues with it. It charged my phone quickly (Moto Z Force). I was so glad I got it before my trip so I could focus on things other than how to charge my phone. I only had to charge the charger once during the entire trip due to loaning it to a co-worker to charge their phone as well.

    I would recommend this to a friend

  • Rating: 5 out of 5 stars

    this is a great product

    Posted
    gt3287
    • Verified PurchaserVerified Purchase
    • My Best Buy® MemberMember

    I have been reviewing the portable power units for a while. My family and I often go out with many electronic devices and find our self running low on power constantly. So I decided to make a purchase and I am very happy. The power pack is smooth with a rubber surface and it comes with 1 micro USB charge cable. You can purchase an additional cable to charge 2 units at once. It fast charges your items and also has 4 blue led lights on the side to show you how much of a charge is left in the power pack. It has a micro USB slot on the side for you to charge the power pack. I would highly recommend this product to friends and family.

    I would recommend this to a friend

  • Rating: 1 out of 5 stars

    Avoid; Died After Limited Usage

    Posted
    ILIS83
    • Verified PurchaserVerified Purchase
    • My Best Buy® MemberMember

    I bought this in March and have used it only a handful of times in the six+ months since. When it worked, it charged effectively, but slowly. A couple days ago I plugged it in to fully charge it in anticipation of a day I might need it, and even after hours of charging, only two of the four blue bars were illuminated. Then, the next time I checked on it, it was completely dead and will not accept a charge itself or deliver a charge to any other devices. If I hadn't gotten this when it was on a good sale, I'd be irate. I'm still extremely disappointed, however.

    No, I would not recommend this to a friend

  • Rating: 3 out of 5 stars

    It does the job I guess...

    Posted
    InCoffeeCity
    • Verified PurchaserVerified Purchase
    • My Best Buy® MemberMember

    I own three of these. IF they charge to full capacity you'll have plenty of charge for your devices. However, sometimes and for whatever reason one of the packs does not charge fully. Another had came with a short in the USB cord and tsumi customer service never responded to my inquiries to just send another cord so I wouldn't have to return. I ended up in line at Best Buy to exchange it. The third works fine. I conditionally recommend this product. These are a buy at your own risk and keep your receipt kind of product. I highly recommend a rapid wall charger for these to cut down on lengthy charging times.

    I would recommend this to a friend

  • Rating: 3 out of 5 stars

    Great device with some flaws

    Posted
    ictkeith
    • Verified PurchaserVerified Purchase
    • My Best Buy® Elite MemberElite Member

    Love this device it charges so fast.. only problem is the little cord it comes with if you dont have it at the exact right angle it wont charge.but if you're just sitting it on a flat surface it works great. Also the company told me it works with any usb cord, However , when I use a different cord my phone will pop up and say "not original cord, slow charging will occur" .. I asked yhe company if I could buy some more of their cords and they said they don't have them lmao pretty sure they have to have them right? Great product if you use on a flat surface don't mess with it .

    I would recommend this to a friend

  • Rating: 3 out of 5 stars

    I *think* I notice a difference...

    Posted
    seenafterscene
    • Verified PurchaserVerified Purchase
    • My Best Buy® MemberMember

    I do notice--store or name brand, and probably depending on your phone--some seem to charge the phone faster and some are quicker or slower to charge--despite the same specs. This one is slow with my current Samsung J3-6 and previous LG Tribute HD, but it was a great value. The last one I had was a Rev, exclusive to Best Buy, I believe. I picked it up a year ago at a comparable price--but that one seemed to charge faster (both charging and being charged) & had a digital read-out reflecting amount of mHa remaining on the charger. I wish I hadn't lost it, but this is adequate.

    I would recommend this to a friend

  • Rating: 5 out of 5 stars

    Does What it says it will do and More

    Posted
    Jerry
    • Verified PurchaserVerified Purchase
    • My Best Buy® MemberMember

    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

    I would recommend this to a friend

  • Rating: 4 out of 5 stars

    Everyone needs at least two of these in their life

    Posted
    jacobbennett2021
    • Verified PurchaserVerified Purchase
    • My Best Buy® MemberMember

    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.

    I would recommend this to a friend

  • Rating: 5 out of 5 stars

    Perfect

    Posted
    AKAleut
    • Verified PurchaserVerified Purchase
    • My Best Buy® Elite MemberElite Member

    I have a samsung galaxy s7 and it's battery life isn't the greatest, so i purchased this nifty item at best buy at the mall cause my phone died. It works great! I bought the most expensive one with more charge (it's heavy if carrying in a purse) but you can charge two phones or devices at once. It charges quickly too! I would recommend this to others. I purchased this one instead of the other brands(even though a best buy guy recommended the other brand) because everything came in the package and it had more battery power, also you don't have to buy anything separate.

    I would recommend this to a friend

  • Rating: 5 out of 5 stars

    Lifesaver

    Posted
    oramos93
    • Verified PurchaserVerified Purchase
    • My Best Buy® MemberMember

    This battery pack charger is just a lifesaver! My phone needs charge at least twice a day due to Pokemon go, but this device has saved me throughout the day. When my cousin needs charge my battery pack also has a second slot for another phone to charge, so it's super helpful! I have recommended this product to other players because you'll never know when you might need a backup when everyone is trying to catch them all on Pokemon go

    I would recommend this to a friend

  • Rating: 5 out of 5 stars

    Great backup for cellphones and tablets

    Posted
    discerningbuyer
    • Verified PurchaserVerified Purchase
    • My Best Buy® Elite Plus MemberElite Plus Member

    Great build quality thin rechargeable battery for cells, iPods and tablets. Comes charged, I've used it several time for my Samsung Galaxy 8 before the unit needed its first charge. Fits easily in your pocket so a cell charge is always available. I try to keep my cell battery charge to between 20% and 80% not either fully discharged nor fully charged. I've read that the cell battery will have a longer useful life if its charge remains within that range.

    I would recommend this to a friend

  • Rating: 5 out of 5 stars

    Lots of power for this charger

    Posted
    Colebearie
    • Verified PurchaserVerified Purchase
    • My Best Buy® MemberMember

    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.

    I would recommend this to a friend