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.

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

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!

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.

Recharges the IPhone 6 with good speed. There are quite a few recharges of the IPhone 6 in the PocketJuice. Recharging of the PocketJuice takes quite a long time. The PocketJuice is quite heavy and takes up a lot of room in your pocket.

A little bigger than I expected, but once this unit is fully charged, it should last you through out the week. Definitely 20,000 mAh, and charges fairly rapidly. I strongly recommend this power bank

Great source of external battery power is packed into this, relatively, small, package.It is kinda bulky, and a bit on the heavy side if carrying it in a carry-on, but convenience of having 20,000+ Mahs on the go is worth it. Works seamlessly by simply connecting it to your device via USB micro cable. The only nuances I have is that it takes a long time recharge it. It came half-charged out of the box, and took overnight to charge the other half. Also, you can't recharge while it recharging another device. Other than that, 5 stars!

After using a smaller power pack by this company I decided to try one of larger capacity. This thing lasts a long time! One charge and you'll have multiple days of recharges for your phone. Of course such power comes at a price: the device is rather heavy and perhaps a bit longer than is comfortable to carry in hand or pocket. I still greatly recommend it though if you're going to be away and need the ability to charge your devices. Would be a great asset for a hurricane supply item.

During a long flight my phone just ran out of power. I decided to look into a portable power source. The Tzumi was on sale plus we had rewards to spend. The unit is large and has some weight to it. The trade off is the amount of charging it can produce. On our last cross country flight the Tzumi kept 2 phones and a ipad going. Made the flight a lot easier to deal with. It does the job as described.

I bought this portable battery for a Christmas gift, so I do not know how it works. I would say that it is fairly large and heavy. I`m not sure how "pocket" it really is. I`m not sure if the person I`m giving this to will keep it or not.

This charger is capable of charging my devices before needing to be charged. A bit large and heavy to be carried around in your pocket. Overall very easy to use and extremely long battery life.

Charged my phone quickly from 1% to full in an hour. Still had 3/4 Charged left on charger. Bigger than a cell phone and heavier.

I got this battery charger to keep my phone charged for a 10 day trip and for future camping trips of up to a week long. It charges my Samsung Galaxy S7 Edge multiple times before needing to be plugged into the wall. I've never seen it less than 3/4 full of charge after fully charging my phone two or three times. My only complaints are about the size and heft, but I expected it to be bulky to provide the amount of capability it has.

This is heavier and bigger than most portable chargers but it holds a much bigger charge than most. It would be better if it could directly plug into 120v

I bought this PocketJuice for my son's iphone 5S because it loses power faster than before. It charges his phone fast anywhere. We don't need to charge it often with 20,000 mAh. It is not as portable as the small portable charger, due to its size and weight. It's a little heavy in a pant pocket. But, it is very reliable and last so long that it is OK with him.

Does exactly what it says! Takes a while to charge back up fully though. Other than that, and it being big, it’s been a huge life’s saver.

It was a little bigger then I expected but it works great. Very powerful and will help keep your phone alive for a long period of time!