Customer Ratings & Reviews

Bought this to extend my pokewalks and it works great for it. It's not super heavy or bulky. It fits right into my messenger bag and I can charge my phone without pulling it out. Holds a charge for a good while. I've only had to recharge twice so far I believe. I like that you can check approximately how much charge it has left so you can plan ahead. The second port is nice for when I'm walking with friends.

This was a life saver. i had an old phone that would always die on me and this became very handy.

needed more charge for my samsung. This helps when the phone is on the move but needs a charge.

This is my first charger that I have ever had. I got it to charge my tablet while not near an outlet. It is large enough to charge my tablet completely twice before I need to recharge it. I am using it more than I thought it would.

The charger is pretty pricey, I paid around $40. It's 12 mAh, It charges my phone up to 4 times and i've been looking for one but this portable charger is the best one I could find. I like how it feels and the way it looks.

I was surprised how quickly the device charges my Pixel 2 XL. Stays cool, not too heavy. The advertised safety features sound attractive, but hard to comment on these. Not to heavy for 12000 mAh rating.

This has been a life saver for me on several occasions. It charges quickly and it has massive battery storage - I have been able to charge my iPhone (and my wife's phone) several times over the course of a day using this!

Works great. I use it when I travel. My kids love it too.

product charged my phone and golf gps in less than 5 holes on the second 18 holes of the day.

I get a lot of charges out of it. Very useful. Love it

Traveled with this charger and it worked like a charm.

I grabbed for my wife to use while on the road for the size and capacity. She has been happy, and stopped taking mine. It has been solid by, and she has taken on many trips, and recharged her -- and others phones...

Didn’t have to wait long to re-charge my cell phone..

Great portable charger, can get about 6 charges with 10% battery left on my S7 and it chargers the phone very quick. When the portable charger drains it usually takes about 16 hours to fully charge again.

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 really like this charger because it will charge my phone a number of times before needing to be charged itself. My only complaint, if anything, is that it is a little heavy. However, I mostly use it at home or in the car so it isn’t a problem.

This is a durable battery and has come in hand several times a day for months now. I don't leave home without it. I probably get two full charges on my iPhone and another 2 charges on my apple watch before this thing dies!

I saw this on a the self it was the largest charging battery for only 29 bucks so I said lets try this. I bought it and tried on my phone and ipad I got multiple charges on each this was one of my best buys ever.....

Great for keeping your phone charge. Very portable.

Fully charged my phone in 30 min from dead I've gotten more then the 4 full charges then it says it will do. it is great for someone that has kids like I do that like to use these phone for game on long rides in the car