Product Description
Power Up Your iPhone 15 from 20% to 70% in Just 30 Minutes.
Built in Cable for iPhone, USB C Cable, Micro USB Cable for All Devices
Compatible with iPhone, Samsung, iPad, All Cellphones
Say Goodbye to Tangled Wires and Multiple Chargers How can I get the best solution if I have a problem with my product?
You can find us on your manual or through your order.
You will get satisfactory compensation if there are any technical problems with our power bank no matter whether the return window is closed or not. We will solve your problem within 24 hours.
Getting hot when charging, is it normal?
Yes. It does get a little bit warm when both fast charging and fast discharging. Please feel free to use it since this power bank has built-in over-heat protection.
What’s the biggest disadvantage of this power bank?
The biggest disadvantage of this power bank is the weight of this power bank is around 12.99 ounces, which is just a bit heavy, but the weight matches the huge juice, fast charging, built-in cables, and wall plug, and broad compatibility.
What is the real capacity of this power bank?
It has 20,000mah but it ends up providing less than 20,000mah to your device because it loses energy when discharged, which is common for power bank.
Portable Charger with Built-in Cables and Wall Plug: Two cords and wall plugs integrated allows the Charmast power bank to be compatible with all cellphones, so you don’t need to bring extra chargers or get frustrated with a tangled mess of wires.
High-speed Charging: Equipped with 20W PD and 18W QC 3.0 fast charging, power up for your iPhone 13 from 20% to 70%, Samsung S21 from 20% to 60% in half an hour—that’s 3x faster compared to an original 5W charger.
20000mAh Capacity: 20000mAh battery capacity provides 3.75 charges for iPhone 14 Pro Max, 3.87 charges for iPhone 13, 4.26 charges for iPhone 12, 1.55 Charges for iPad 10th generation, 2.4 charges for your Samsung Galaxy s22 ultra, 4.33 charges for your Google Pixel, One Plus 11 2.4 charges.
Compact Battery Pack: The weight of this power bank is around 12.99 ounces, which is just a bit heavy, but the weight matches the huge juice, fast charging, and broad compatibility. Thanks to an advanced slim profile that makes for a comfortable grip, the fully rubberized cover lets you enjoy a nice touch and protects your device from scratches or drops.
What You Get: 20000mAh power bank *1, user manual*1, mesh pouch*1, our 24-month support, and 7-day/24-h friendly customer service. If you have any problems, please contact us and we will solve them within 24 hrs.product.”>Details)
Customers say
Customers appreciate the power bank’s built-in cords, battery capacity that holds a very long charge, and find it convenient to use. The charging speed and functionality receive mixed feedback – while some say it charges devices quickly and works well, others report it doesn’t work with iPhones. Durability is also mixed, with some saying it lasts a long time while others report it breaking after 10 charges and 6 months. The weight receives mixed opinions, with some finding it easy to carry around while others consider it too bulky for small backpacks. Value for money opinions are divided between those who find it worth the purchase and those who consider it a waste of money.
AI-generated from the text of customer reviews
Amazon Customer –
Fast, built in cords.
I love this charger. I like that I can plug it into any outlet to charge. (11 hours to charge) For faster charging, plug it into a 9V charger. It will charge my phone several times, and it is fast. I love the built in cords, I don’t have to worry about getting the right cord to charge something. It is a bit heavy, but worth it for how usable it is. I have only had it since January, but it is my go-to charger when I travel.
JEnnifer O’Neill –
Fast Charge and Long Battery Life
I’ve been using the Charmast 20000mAh Portable Charger for a couple of weeks now, and overall, I’m pretty impressed! The built-in USB C cables and wall plug are game-changers, eliminating the need to carry extra chargers, which makes it super convenient for traveling. No more tangled mess of wires!What really stands out is the fast charging capability. I can charge my iPhone 12 from 20% to 70% in about 30 minutesâtalk about quick power-ups! The 20000mAh capacity is phenomenal too; it easily gives multiple charges to my devices, like around 4 charges for my iPhone 12, which is fantastic during long trips.The charger is a bit on the heavier side at 12.99 ounces, but the weight is justified considering the massive capacity and performance. Plus, the sleek, rubberized design feels great to hold and offers decent protection against slips.This little powerhouse has become an essential part of my day-to-day life, and I highly recommend it for anyone in need of a reliable portable charger!Whatâs nice is that it comes with a user manual, a mesh pouch, and exceptional customer serviceâso you know youâre well taken care of. Great job, Charmast!
At-home-parent –
Wall Plug in doesn’t work
I have bought multiples of this charger in the 10000 mpw version for myself and as gifts and the all work perfectly. I was excited to see that it came in a 20000 version, so I purchased two. They are twice as heavy and thick as the 10000 version, which would be fine except that she about two weeks, the wall plug in feature stopped working on both. This is what makes these chargers so unique- that you don’t need a separate cord to plug them into the wall. I tried to start a return, but the company made it too difficult. Now I have to use a separate cord to charge them, because I have to keep them, and i have to give them a poor review. They take a really long time to charge. I do not recommend this larger version.***EDIT….After posting this review, this company reached out to me and offered me a full refund for both faulty chargers. I will use the money to purchase a couple more of the smaller (10000) versions, because they really are fantastic, and I that trust that they will work. The company did not ask me to update my review, but i am because they did do the right thing after my review was posted.
T. Conners –
adapters for several items.
We like the portable chargers very much. They can be used to charge several items at once. I bought two, one for myself and one for my husband.
Amazon Customer –
Awesome product
We have purchased three of these. They are amazing! It plugs directly into an outlet to charge. It has two cables attached to it so you donât have to worry about losing them. One cable is a iPhone lightning pin and the other one has USBC and micro usb. Charges devices quickly! My daughter took one to Miami for a 3 day trip. She fully charged it before she left. Her and her two friends used it all weekend and the day they flew home it STILL had power! She plugged in in to fully charge just in case their flight was delayed. Itâs compact enough to fit in backpack, pocketbook, fanny pack etc. it is a little heavy but with the power it packs itâs worth it! I was hospitalized a few times and brought mine with me and didnât have to bring any cables or outlet brick. There are built in prongs on it to plug it in. It takes a while to charge but it packs slot of power!
Johnny –
Big and ready for the next Florida hurricane
Man, these storms just keep coming at us down here. But even if you are in Anchorage, if you donât mind the weight, this far larger capacity Charmast charger will give you three full charges for most cell phones. The wall plus is convenient but slow. One omissionâthe product listing and manual makes you think you are getting a Type C cable that is necessary for much faster charging from the Charmast to your Type C wall charging block. So, be sure you factor buying one into your costâWhat is needed is a Type C to Type C cable if you do not already have one. One more plus: The outside of the charger gives a numerical reading of current charge percentage. Useful!
Black14 –
After a year, still going strong.
I LOVE this charger. Iâve had it for over a year now and just added two more to my cart for my husband and daughter. My husband has a much more expensive one I think from Sharper Image but even he likes this one better. I take this on every long car trip I take, I bring it to work everyday, and I take it on vacation. It saved the day at my brother in laws funeral when my husbands other brother needed to charge his phone and didnât have cords for his own battery pack. Cords are built in so never an issue with mine. Itâs a great deal. I charge it about every two weeks and use it almost daily at work. Itâs solid, looks and feels nice and is just so convenient and powerful. I really do love this battery pack.
Juan –
The quicker picker upp..rrrreally nice!
Charges really quick but your phone looses that same charge just as quickly. I just noticed this particular thing but if you just need it for a boost and a quick fix its definitely nice it comes in handy af! I make sure I charge the power bank up too 100% every night and i use it atleast 4xs during the day.
Josee Nadeau –
Stopped working after 3 months. I ordered one for a friend and the same happened to them. Sadly, there is no way to get ahold of this company to report, or request a refund at this point.
Amazon Customer –
This is more useful than just a battery because it has the ability to plug directly into your device. I also like the ability to take this battery on the go without having to pack the cables.
Ava –
So after Iâve used all the power in the power bank, I tried to charge the powerbank .for the first time. And it cannot be charged – the battery level display keeps showing 0% no matter low long I charge it for. And itâs just passed the one month return window when I discover this so Amazon doesnât let me return it. Such a waste of money.
Bluekodiak –
works excellent, charges multiple devices on a single charge. Will charge an apple phone and an android phone at the same time.
Leah P –
Easy to use, no loose cords to deal with, compact and easy to charge