charmast 20000mAh Portable Charger with Built in Cables, 22.5W Travel Power Bank Fast Charging, USB C Cell Phone Battery Pack for iPhone 16/15/14/13/12/11 Series, iPad, Samsung, Android, Tablet
$31.99
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Product description
1 Widely Compatibility
2 Portable Black
3 Airplane Allowed
4 Travel Essentials
5 Share Power
Recharge Conventiently
Recharge Conveniently Via Attached Recharging Cord:
Recharge your powerbank via its attached recharging cord conveniently;
No need to get another cable, no more struggling to find a charging cable anywhere;
Fully recharged around 12 hours (via built-in USB-A port); 6 hours (via built-in USB-C port);
Recharge Faster
Recharge Faster Via USB C Input:
Recharge your powerbank via its USB C input;
You need to get or use your A to C or C to C cable separately to recharge your powerbank;
Fully recharged around 6 hours (Your charger block and your seperated charging cable required 18 Watts or above);
1 Package
2 Gifts Ideas
Capacity 20000mAh Micro Input 5V-2A/9V-2A/12V-1.5A USB C Input 5V-2A/9V-2A/12V-1.5A USB A Cable Input 5V-2A USB C Cable Input 5V-2.6A/9V-2A/12V-1.5A USB C Cable Output 5V-3A/9V-2.22A/12V-1.67A Cable Output (for iPhone) 5V-2.4A/9V-2.22A Micro Cable Output 5V-2.4A USB A 1 Output 5V-2.4A USB A 2 Ouput 4.5V-5A/5V-4.5A/9V-2A/12V-1.5A Recharging Time 6 hours (via built-in USB-C port); 12 hours (via built-in USB-A port) Comptibility Compatible with Almost All cellphones. Compatible with iPhone & iPad series, compatible with all Android cellphones, tablets. Compatible with all 5V/9V/12V USB devices Fetures Portable Charger with Built in cables, multiports for multi devices charging Package 1 pc portable charger with built in cables
Can this portable charger charge headphones, watches, fans and more?
Yes, the low current mode of portable charger can charge these or other devices. Method: Press the ON/OFF button for 5-10 seconds, then release it and the LED digits will rotate.
How do I charge the battery pack? Do I need to purchase a different cord?
You may recharge the powerbank via its attached recharging cord, or you may get a seperated A to C or C to C cable to recharge the powerbank.
Can this portable charger be taken on an airplane?
Yes, portable chargers are allowed in carry-on luggage, but not in checked baggage.
Does this support PD/QC fast charging?
Yes, it can fast charge for Android and iPhone. Far greater than the wall charger.
How long it will take to fully recharged the power bank?
6 hours (via built-in USB-C port); 12 hours (via built-in USB-A port)
Stay Powered Anywhere: This 20K portable charger delivers 3-4 full phone charges – perfect for camping, flights, or emergencies. Fits easily in backpacks to keep devices alive through weekend trips, festivals, or work travel.
3-in-1 Built-in Cables: No more hunting for cables! Power bank Built in USB-C, Lightning and Micro-USB cables – simply plug in to charge instantly. It eliminates cord clutter while keeping all your devices powered anywhere. Never face a dead phone again!
Works with Virtually All Your Devices: Charge iPhones (all models), Samsung Galaxy/Pixel phones, iPads, AirPods, Kindles and most tablets with this universal power bank. No more carrying multiple chargers – one solution powers your entire tech life.
22.5W PD Fast Charging – 50% in 30 Minutes!: Get a 50% charge faster than you can finish your coffee break. Perfect for emergency power before meetings or when rushing out the door.
Exact Battery % – No More Guessing Games: Unlike basic 4-light indicators, the digital display shows precise remaining power (0-100%) – just like your phone’s battery icon.Never get stranded with sudden dead power again
Your Personal Charging Station – 6 Devices at Once!: 6 Outputs! Power your phone, tablet, earbuds and smartwatch simultaneously – no more choosing which device gets charged first. Perfect for professionals with multiple gadgets.
Double the Power, Only 35% Heavier: Battery pack 20,000mAh (2X capacity of standard chargers) in just 6.3 x 2.85 x 0.72 in – only 35% heavier than 10K models but holds twice the energy. Fits anywhere a paperback book would.
Flight-Friendly Portable Power: This power bank meets all airline safety standards, making it the perfect travel companion. Always pack in your carry-on (never checked bags).
What will you get: 1 x power bank, 1 x use manual, 1 x travel pouch. 24 Month’s support and lifetime technical support.
13 reviews for charmast 20000mAh Portable Charger with Built in Cables, 22.5W Travel Power Bank Fast Charging, USB C Cell Phone Battery Pack for iPhone 16/15/14/13/12/11 Series, iPad, Samsung, Android, Tablet
Add a review
$31.99
Emily –
My favorite portable charger. We’ve bought several of these.
These chargers are fantastic. We’ve bought several because our sons keep stealing them and we travel a good bit. They are a bit slow to charge – I’d recommend leaving them on overnight. But they charge other devices faster than any other charger I know, and the built-in cords are incredibly handy. At this point, most of our devices are USB-C, but then we will have that one random Lightning cable device, and that one random device with a kindle port. This has made my “emergency chord drawer” obsolete. Highly recommend.
Dreama –
Amazing!
This power bank is the perfect backup to support all of your devices. It is nice and compact making it easy to carry in anything from a small clutch/purse for me, to a small backpack or even a diaper bag for a child. The slim design makes it easy to carry anywhere, including by tiny hands, during use by my young, six-year old son. It is about the size of a phone but packs SO much power for its compact dimensions. It is capable of charging my son’s iPad, both of our iPhones, and even my laptop computer SEVERAL times with a SINGLE charge. I only have to recharge the device itself about once every 2-3 days, and it, in return will power all of our devices several more times, before it’s internal capacity is completely diminished and expended.It also charges with amazing speed. In the time it has taken me to write this review, the battery power on my phone (iPhone 15) has literally increased to 100% from where it was (20%-30%) at the onset of preparation of this review. The 1-100% battery life indicator is very convenient, letting you know how much power you have remaining to be consumed . I love the fact that it is designed to INCLUDE the FOUR most common charging tips, already built in, eliminating the need to carry around extra bulky cords in order to simply facilitate the use the device. My son and I can literally and quite easily recharge our devices at the same exact time. It does also include two USB ports to connect different devices.I love this product so much, that I just bought a second, so that my son and I can each have our very own, when we venture out of the house separately. I find this to be such a great value for the money, that I have already decided that I will be purchasing more units as gifts for my son’s teacher, and friends and loved ones for the holidays this year.I have included photos with my review to help you reference the size of the product. There is a green power bank next to a green iPhone 15. The blue power bank is connected to an iPhone 13 mini.
Narragansett, RI –
Reliable charger
I’ve had a few different kinds of portable chargers, small and larger. They all seem to end up dying and or not performing well. This one has been very reliable for the past year or so, I use it consistently to charge my iPhone , wireless headphones, and to power other random electronics while I’m on the go I like that it has multiple built in connectors and displays the percent that it itself is charged as well
george buerger –
Built in cables are awesome
It’s perfect for I wanted. LOVE the built in cables !! Powers iPhones FAST and doesn’t take much usage. Mac computer takes a while and drains a lot of the battery. The recharge is SLOW. But the size and price make up for any negatives My wife has bought one after I showed her mine
Brenda –
Good charger
I actually bought it twice. Charges your device up 4 times. It comes with all the cords you may need. The USB is included as well and charges with the use of a brick or USB port. The unit does take quite some time to fully charge, but holds that charge well. It’s about the same size as my Samsung Galaxy.
Lan –
You would not be disappointed
This is possibly, no, this IS one of my best Amazon buys. This thing lasts so long. I can get around 4-6 80% charges on my phone for the battery-pack. It also charges fairly fast, i just leave it to charge over night. This thing also charges things so fast, i prefer to charge my phone using this than a cord. I personally have really made good use of this charger and strongly believe that if you are looking for a portable battery pack then you SHOULD buy this one. Also the size is perfect, i can have my phone plugged into it and be able to fit both into my pocket (it does look a little weird when i do it tho).I havnt tried other battery packs but again, you would not be disappointed if you were to buy this one.
TChlarson –
**Exactly What Every Busy Mom (or traveler) Needs!**
**Exactly What Every Busy Mom (or traveler) Needs!**I absolutely love this Charmast 20,000 mAh portable charger! The quality is excellent — it feels sturdy yet lightweight and compact enough to toss in my bag. I especially love that it includes a USB-C, old iPhone, and mini USB cord built right in — no more digging around for extra cables!It charges super quickly and holds enough power to fully charge multiple phones, tablets, and even small fans on a single charge. The battery life is impressive, and it’s been a total game-changer for long days at the ballpark, amusement parks, airports, and road trips. You will have everyone and all their things powered!Before this, I used to pack 3–4 different battery packs and a handful of cords that may or may not work. Now I just bring this one, and it handles everything with ease. Durable, efficient, and at a great price point — this has seriously simplified my “mom life.” Highly recommend!Also worth mentioning, it can be charged by a usb-c or a mini usb. I have only ever used usb-c to charge it. Just another thoughtful design this thing has 🙂
aton that –
Works well for less than a year.
I bought this charger in Dec 2024, it was fast charging and able to charge iPad Pro more than once but now, Nov 2025 not even a year, it does not work properly. it can’t even fully charge the iPad Pro which still has 40% power left.
Chagalix –
This power bank is very powerful and chages all you usb devices extremely fast. The built in cables with different usb connectors makes it very handy. The only inconvenience is that it is a little heavy but given the power it carries, I still have it with me everydsy in my bag. FIVE STARS!
Shihab –
Nice build quality good and working perfectly all wear
Talal –
ممتاز و سرعه الشحن جيده
Mom of busy household –
I bought this about 6 months ago and it’s still holding up well. I use it a lot especially when I am travelling. It is great to always have a backup battery on hand.Plus- charges fast, built in cables, still working well.Minus – wish it had a built in plugin attachment, a little heavier than my previous one I ownedOverall, I’d recommend because it has held up better than other battery packs I have owned. All cables are still working well. No issues after a lot of use.
Dan Samuels –
I absolutely love this charger, and keep buying more of them. Having the cables built-in means that you just have everything you need in one unit, with no other cables, or sometimes not even a plug, needed.I even travelled abroad for a week, completely forgetting my laptop and phone charger, and managed to get by with just this. I plugged the USB-A input into the hotel USB-charging socket overnight, with the USB-C output plugged into my iPhone. Both were fully charged by the morning, and then I used it to keep my MacBook Air charged during meetings over the day. I wouldn’t recommend it, but, heck, it worked!It also was enough to keep my iPhone and my MacBook Air running over a full day at a conference, again with no other cables at all required.It just answers every use case you need it to. Plug it into your airplane charging socket to keep your phone charged? Done. Charge your laptop by USB-C? No problem. Charge your USB-C iPhone and kids’ Lightning iPad? Sure.The only thing it can’t do, is charge by plugging the USB-C cable into a charging socket as an *input*. There are more USB-C sockets in Ubers these days, and for these, you’ll need a cable.