Customer Ratings & Reviews

Bought two of these during "Deal if the Day" promotion in preparation for a week away in vacation to a Disneyland. Charger was a great way to keep all of our phones (5 in all) charged through out the day. Only had to recharge the battery pack once or twice during the trip while allowing us to charge our phones from empty each day. On average, recharging one phone from empty to full would only waste a quarter of the overall recharger overall capacity. The charger is big and heavier then most but you will always have a charged phone. Would definitely recommend it, specially for the $17.99 price advertised during these deals.

Make sure to only recharge it using the included cable - this ensures a shorter distance between delivery of electricity for the battery. Ensuring safety from anything related to a fire hazard. Allows you to externally power and charge USB-A male cables to devices, two at a time. USB-A to USB-Type C(Android), USB-A to Lightning for iOS(Apple) and any other USB devices, such as wireless headphones, flashlight, digital camera that charges with their USB ended cable. Usually charge mine up and it can take 8-12 hours to be honest. A solid green circle indicates a full charge. 20,000mAh equals MULTIPLE full charges. iPhones typically run 2000-2700mAh I've taken with me on road trips, Pokemon Go, a day at the coffee shop. I usually keep it charged and in center console in my car for on the go power.

Bought 2 of these and received on good condition. In full charge, we tried plugging a runnibg iPad to it in prep for our camping and works for almost a day. I didn't wait til it drain out and I'm good with it. I put only 4 stars as I wish I could charge it faster... takes about 4 hours to charge.

If you need a power bank for any Bug out bag or power outage? This is great item to have, Best buy has great products for the Best price.

I like it a lot. Keeps my stuff charged all day. If I was still playing pokemon go, all I would need at my pokestop is this, a mobile food delivery app, and a bucket... to sit on!

Love it love it, it makes my Miami trip a lot fun... very reliable

Brought the charger last march 4,2017. Charged it 3 times and now quit charging.. send message to company but no response yet .

Break easily when plugging in or unplugging. Not very solid

I thought this to help extend the life of my iPad Pro to get through a full day at college taking notes with my Apple Pencil via Bluetooth. This did a great job extending the battery. It charges relatively rapidly at night when I’m charging my iPad. Really my biggest problem is that it gets heavy after a while in the backpack, and perhaps that it’s kind of bulky an unruly on teeny tiny college desks when I’m trying to recharge the iPad. I wish I could get a give this a 4 1/2 But I had to choose one or the other, so with my two very minor not even really complaints I rounded down to 4.

I have an iPhone 6S and haven't had the battery changed yet, so it tends to run out of juice faster than I would like. As I was getting ready to fly out for a big 5-day sales meeting, I decided it would be a good idea to invest in a portable charger. Luckily, the Best Buy "Deal of the Day" just happened to be this Tzumi - PocketJuice 20,000 mAh Portable Charger, and for less than $20 dollars, it seemed worth a try. I'm glad I did! First of all, the capacity is huge at 20,000 mAh. According to the packaging, I should be able to charge my phone about 11 times - although I would say it's more like 6-7 full charges. It's a little larger and heavier than I expected, but it's still small enough to fit into a suit jacket pocket. It has 2 USB ports, so I can actually charge 2 devices at once such as my iPhone and iPad. I would say it charges my phone at about the same rate as my wall charger. The on/off button has lights around it showing how much charge is remaining, which I find really helpful. The device itself takes up to about 15 to reach a full charge, and the only cord that comes with it is a very short USB to mini-USB. No "wall wart", you'll have to provide your own or plug it into the USB port of a computer to charge it. Overall I'm very happy with it. We'll see how well it holds up over time.

Amazing portable charging bank! I compared this one to quite a few others before ultimately deciding upon this one. It charges up to 2 devices at once, holds 11 smartphone charges//20,000 mAh, and is quite sleek. It is a tad bit heavy, but not crazy heavy. If you're looking for something really light, I would recommend getting a smaller charging bank. I absolutely love this one, and it suits my needs and has exceeded my expectations! 5 stars! Thank you!

It charges dev quick and durable. The product is bigger than a iPhone 6+, it takes the battery around two days to fully charge. Its heavy and bulky but holds charge for a long time

The 20,000mAh charger quickly charges your smartphone (haven't tested it on a tablet). It's portable in size, but it does have quite a bit of weight to it.

Does what it needs to do, option to charge two devices at once is a plus. Charged my iPhone SE from 20% to 50% in around 30 min. It raised the temp of the battery during charge so I stopped the charge at 50, not sure if its an issue or just the amount of output power into the device. The look and feel of it is good but it shows your fingerprints easily, a full green ring for indicating a full battery is nice and bright. It is in the large size and heavier side, its better to keep it in a bag or backpack if you are on the go.

Bought this because it was on sale and less than other power banks with less mAh. Honestly, wasn't expecting much from this but it surprised me with how quickly it charges and it lasted at least 6 full charges between my iPhone and iPad. It is a bit heavy and bulky but that's expected for a power bank with 20,000 mAh. Ideal for traveling!

I can charge my iPad twice and my phone 3-4 times before having to recharge! It's a heavy unit, weights more than my phone! (iPhone 6 plus). Has two ports so I can charge two thing at the same time! Great product!

I can fully charge my iPhone7 Plus 4+ times. The soft rubberized finish is attractive and the shape fits nicely in an inside coat pocket, or small backpack pocket. It is a bit heavy, but if you want a true 20,000Mah then this is it. It takes a while to fully charge, but it's worth the wait. .I charge once a week and keep it with me everywhere I go now.

This is a great backup battery for charging mobile devices. It is a bit bulky, but it packs a lot of energy and can recharge my phone about 3 times before needing to be recharged itself. It is simple to use with only one button. One click to turn it on, and two to turn it off. It could not be simpler.

The Tzumi PocketJuice 20,000 man Portable Charger packs the punch with quick charging. I wanted a reliable charger that I could get several uses out of, this does just that. I have wasted money on off brand less powerful chargers to only be disappointed because they work a few times before dying. If you want quality and something that will last a long time, go with the Tzumi. I only found 2 very minor flaws - it does not come with a case and it's heavy when carrying it around. However, the sense of knowing I can get a quick long charge outweighs these very minor flaws.

I purchased this power bank due to size and price. Comfortable size considering its 20,000 mAh. Can charge two devices at the same time. Would recommend for storm outages, road trips, camping, hikes, or traveling by air. Being usb, you aren't committed to one type of devices. You can charge your iPhone, micro usb, Type-C, GoPro, tablet or anything else that has a usb plug.