Main Content

Customer Ratings & Reviews

Tzumi - PocketJuice Endurance 7800 mAh Portable Charger for Most USB-Enabled Devices - Black-Front_Standard

Customer rating

Rating 4.6 out of 5 stars with 983 reviews

94%
would recommend to a friend

Customer ratings & reviews

Filter:
Page 1, showing1-20 of 983 Reviews
  • Rating: 3 out of 5 stars

    Plenty of power, but far from perfect.

    Posted
    Graybeard
    • My Best Buy® MemberMember

    I haven't tested its limits, but it seems to put out enough power to fast charge my Note 4 at least twice. It has two output ports, so I can charge two devices at once, which is sometimes very useful. That's the good part, now here's the bad. The worst thing is that it takes a very long time to charge - about 8 hours using a 2.0A charger. It doesn't seem to charge at all on a 1.0A charger. It cannot charge and discharge at the same time; it actually shuts off the output if you try it. This is very inconvenient, since I use it as a backup battery for my phone. My phone can charge and discharge at the same time. I don't see why this unit cannot. It would just have to reduce the output to less than the input. The very short USB cord that comes with this device is designed so that the battery can be stacked under the phone without the cable getting in the way. Unfortunately, this does not work well in practice. The combined phone and backup battery are too bulky and heavy to hold in one hand. You can very easily accidentally hit the unit's off switch when picking up or holding the phone. If you place the stacked phone and unit on an inclined surface, it will slide and rest upon the USB cable, which is not good. I recommend using a longer cable for both input and output. In summary - not bad, but not good either.

    No, I would not recommend this to a friend

  • Rating: 4 out of 5 stars

    Solid little charger.....especially for the price

    Posted
    Matthew112678

    So a while ago I got a smaller capacity version of the same (4,400mah I think) and quickly passed it off to a friend. It was 1 of 3 or 4 chargers he had at the time. He said a bit ago that all his other chargers were acting up (they were real low end ones) and that the one I gave him was and is still solid. Based on that and the price (along with the general need) I got a somewhat intermittent size & capacity one (7,800mah) and have absolutely loved it. I've seen a few reviews here complaining about the charge cord length, but seriously, you know what your getting there as it's visible through the plastic. Still, it is of note not to use the short little cord that comes with this. If it weren't for that and a long time to recharge when it finally wears down, this would be a 5 star product. But really, for the price and quality there's simply not much room for any real complaints. Save some money and get this.

    I would recommend this to a friend

  • Rating: 5 out of 5 stars

    A must have living in New York City!

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

    I love this product and have come to rely on it. Living in a pedestrian town, I no longer have the option to charge my phone between destinations driving. We are getting more and more places with outlets, but in the meantime it has been so nice being able to charge from my pocket or my bag. This is one of those things I should have picked up years ago. I haven't taken the battery to zero but based on the battery's power level indicator, I can get at least four full charges for my iPhone. This would also come in handy traveling. I used to have a different brand that was also a phone case. After a long flight, a long day at the airport or a long train ride, it is a lifeline to keep a phone going. In this case, because of the design, any piece of electronic equipment that uses a USB plug can be recharged. I highly recommend getting one if you find yourself constantly needing a charge.

    I would recommend this to a friend

  • Rating: 5 out of 5 stars

    Will never run out off battery again

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

    I got this "Pocketjuice Portable Charger" for charging my cell phone while tracking my hiking and making photos. The GPS and the photo making killed the battery of my cell phone much too fast. THAT'S NOW FIXED thanks to the 7800mA extra-charge. 1. I wish the product would be a little smaller, but I did not find anything else with the mA I needed (above 7000mA). Its like having 2 cell phones with you. 2. It fast charges my Samsung S7, which not all portable power-packs can do. 3. It lasts for 3 charges (not 4 like in the description). 4. Comes with a very short usb cable at home, which is very practical. Don't buy any portable power below 7000mA!!! For a day hike with GPS tracking and photos, perhaps a view short videos, you will need this amount of mA. My worries of running out of power is over.

    I would recommend this to a friend

  • Rating: 1 out of 5 stars

    Worked once then won't take Charge

    Posted
    Fishdogs

    Took forever to charge the 1st time, but when it finally did, it charged my Droid Turbo to 100% in about 2 minutes. All downhill after that. the stored 4 "full charges" depleted when I did not use them in about 2 days, and I have not been able to get it recharged since. Since there was no actual plug included, I have tried using the USB port from my computer, and 3 different wall plugs. Same result- it blinks like it is storing the 1st charge, but nothing else happens. Because the usb cord is so short, it's hard to find a wall plug where the unit doesn't hang from the cord...Very disappointed. Will have to send back to manufacturer since the Best buy exhange period has passed 30 days.

    No, I would not recommend this to a friend

  • Rating: 5 out of 5 stars

    Fast. Portable. Convenient.

    Posted
    Jimmothythe3rd
    • Verified PurchaserVerified Purchase
    • My Best Buy® Elite MemberElite Member

    Ever since Pokemon GO came onto the scene I knew that a battery pack was necessary for my mobile needs. I had done some looking around and different options and pricing, and when I saw this one I knew that it was perfect for me. It gets about 2.5 charges on my phone and does it at lightning speed. It came with a short micro USB cable so I didn't have to use one that I already own. Charging the device itself is even quick (although probably due to my fast charger for my phone). The bulk never seemed to interfere with my every day needs. It IS a little on the heavy side, but obviously the bigger the capacity the more it will weigh. The fact that it comes with approximately half a charge is just icing on the cake.

    I would recommend this to a friend

  • Rating: 4 out of 5 stars

    Approved on the airlines

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

    I bought this portable charger to take on my trip to China. Being on the bus all day sightseeing, my cell phone battery ran out pretty fast with all the pictures and videos I was taking. I got about 2 full charges on my phone out of this portable battery before it died and had to be recharged. This battery is also approved to carry on a lot of airlines. I flew with Air China and we were required to take the battery out at security and they checked the voltage. This one always passed. Only complaint I have is that I can't tell when it's fully charged, the segments of the circle will stay lit as the battery charges, but the last segment will constantly flash and after observing it doing this for 2 hours, I'm assuming it was done.

    I would recommend this to a friend

  • Rating: 5 out of 5 stars

    Lots of Juice

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

    I bought this on a whim when Pokémon Go was released. The store was all out of the heavier usage ones, and this was left. It was overall a good purchase for the price. On a S5 running the game, nonstop, with Pandora music streaming was able to get 6+ hours out of a single charge. Even with the apps running the charge pack was good enough to charge the phone, rather than maintaining current charge, albeit at a slower pace. It has two ports for dual phones if needed; and does take roughly half the day to rercharge, so you'll likely want to do this just before bed time. Make sure to disconnect when not in use to avoid shorting out the internal batteries.

    I would recommend this to a friend

  • Rating: 5 out of 5 stars

    Great Portable Charger

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

    I bought this for the times when I'm away from home or office and don't have access to a regular wall or car charger. I bought my son one of these for Christmas last year and he loves it. I was at a NASCAR race in July and they had charging stations, but there were so many people trying to use it, it took forever to charge at all. This would have been a perfect time to have this portable charger. My son also plays disc golf and is sometimes in the woods for long period of time. This works great for him, and me, when I go watch. This portable charger is a great idea and a great deal for the price.

    I would recommend this to a friend

  • Rating: 5 out of 5 stars

    Wow. This is great!

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

    I have bought 3 of these in the past 3 months. We went to best buy looking for portable charges to help fuel our Pokemon Go habits. We already owned portable charges (13 total, a wide variety of) and none of them could do what this one did. It charged our phone while we played the game. We ended our time playing with more charge than when we started. This little guy packs a punch and I would gladly replace any of mine with this one again. Pros: Charges my phone over 3 times with a full charge. Charges my devices quickly. Holds charge a really long time when sitting idle. Cons: Takes a bit long to charge back up to full.

    I would recommend this to a friend

  • Rating: 2 out of 5 stars

    Not a fan

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

    First use was great. It charged my phone and 2 other phones to full with one charge. But after the 1st phone was charged, the pocket juice wouldnt turn on. I had to wait probably 15 mins for it to start working again. I was able to use it 2 different times, but after that, the pocket juice wouldn’t charge. Even after leaving it plugged in over night which was more than 8 hours, still nothing. It would just have blinking lights and then just stay turned off and wouldn’t hold charge. I even tried different cords to charge it with, nothing. Disappointed i wasted money on it.

    No, I would not recommend this to a friend

  • Rating: 5 out of 5 stars

    EXCELLENT!

    Posted
    MrChrisInDC84
    • Verified PurchaserVerified Purchase
    • My Best Buy® MemberMember

    A friend of mine has a similar charger and I tried to find it in Best Buy, and instead found this one! When I bought it, my iPhone (iPhone 6s Plus) was on 3% life. My iPad Pro (9.5" model) was on 20% battery life. I plugged both in after leaving the store The battery pack was half-charged right out the pack. Within 30 mins, both of my devices had over 65% battery life! I was very impressed! Needless to say, this device is well worth the price! I plan to buy a lot of my friends and family one of these for Christmas! Great gifts for anyone with a cell phone who constantly worries about carrying chargers all the time!

    I would recommend this to a friend

  • Rating: 5 out of 5 stars

    Great portable charger, quick recharge.

    Posted
    aadm1110
    • Verified PurchaserVerified Purchase
    • My Best Buy® Elite MemberElite Member

    Went to Alaska for several weeks and took a couple of pretty standard battery packs with me because I knew that there would be times where recharging was not possible. I had broken my cell phone a couple of days before I left and didn't have time to order extra batteries. I thought that the cells I had would be enough. They weren't. With sparse cell service, it really taxes your equipment and batteries. On my return, I ordered the additional batteries and also went to Best Buy to see what they had in portable chargers. Got one 7800 and one 8000 on sale at really good prices. They recharge my units really quickly!

    I would recommend this to a friend

  • Rating: 3 out of 5 stars

    Gets the job done.

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

    The design is nice, with a clean appearance and smooth surfaces. I work in NYC so it's necessary to have power on the go. And this device delivers just that. My only qualms with this product is the time it takes to charge along with the low output. It often takes well over 2.5 hours for a full charge and to charge my cell phone (Google Nexus 6p) it takes no less that 1.5 - 2 hours depending on the battery level and use of the phone. It's a trade-off for the amount of mAh you have. I can sometimes get 2 full charges on my phone's powerful battery from this thing. I see no harm in giving this a shot.

    I would recommend this to a friend

  • Rating: 4 out of 5 stars

    Great value

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

    I purchased two of these before an overseas family trip. They helped us keep our total of three smartphones and four tablets (one full size and three mid size) charged through long plane rides and airport layovers as well as the times we were "semi-off the grid". Relatively small, light, and slim for such capacity; and a great price. No worries about overheating and battery damage. My one complaint is that it takes quite a bit of time to fully charge (about 7-8 hours), but I have no experience with others in this capacity range to compare to.

    I would recommend this to a friend

  • Rating: 4 out of 5 stars

    Will charge your phone right up

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

    So the first one of these I had to return after a few weeks because the cord became useless in charging the phone...it comes with a 2-3 inch cord that obviously leaves little room for movement so plan on laying it down somewhere. But got a new one and its working so far (I opted to get a 3 foot USB cable so now I can use it without having to lift the fairly large battery. But this thing packs some juice and will charge your phone up very quickly and still have much juice to spare (it has a 2nd USB so let a friend charge up too, or charge 2 devices)

    I would recommend this to a friend

  • Rating: 5 out of 5 stars

    Great charger for traveling

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

    We bought the Pocket Juice charger on a recommendation from the Best Buy employee. It was perfect for recharging our three phones throughout the entire day during our trip overseas. We used our phones a lot for searching, gps, and listening to podcasts so we used battery life fast on our phones, but we were always able to quickly recharge with the Pocket Juice recharger. A great feature of the Pocket Juice is that it has two usb slots to charge two devices at once. It also weighed less than the other brands available at Best Buy.

    I would recommend this to a friend

  • Rating: 4 out of 5 stars

    Great product, for a great price!

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

    This is a great product, for a great price! This charges my phone up fast. I purchased it on Black Friday and I've been using it every day since then. I spend a lot of time driving to work and using a USB travel cord charger doesn't always cut it for me, because it takes a lot longer to charge. This portable battery pack charges a lot faster than a standard plug-in charger too.

    I would recommend this to a friend

  • Rating: 3 out of 5 stars

    Charges phone very fast

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

    Got this charger last minute bec I was on vacation and needed a charger after all the pictures and gps directions I was using. It worked very well and was super fast at getting me battery. It was a little pricier than I'd like to pay (it said it may only be able to charge me phone 4-5 times) but so far so good on longevity and it was worth it to have along the trip. I would lean to 4 stars as it functions well but it was a little too high in price and with longevity questions I'll give it 3. If still buy it if needed.

    I would recommend this to a friend

  • Rating: 4 out of 5 stars

    Nearly Perfect

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

    Bought this just before hurricane Matthew in case we lost power. Luckily we never did, but have used on trips to Disney world and while out and about. Charges our phones really fast and stores 4 good charges. It didn't come with a wall adapter to charge it and it superheated my iPhone charger so I avoided using that again and plugged it into the USB power port on one of my surge protectors which appears to work fine except the included cable is only 2 to 3 inches long. Overall it works as advertised and was a great price.

    I would recommend this to a friend