Charmast 20000mAh Power Bank with 4 Built-in Cables, 22.5W Fast Portable Charger for iPhone, Android, iPad, No Extra Cords Needed for Travel, Work, Emergency

This is one of my favourite power banks. I love that all the cables are attached, so I don’t need to worry about fiddling around or carrying extra cords, it’s super convenient and hassle-free. It’s really powerful, and once fully charged it lasts a long time, easily getting me through multiple charges. It’s a bit on the bulky side, but honestly I don’t mind because the performance and convenience more than make up for it. Overall, a great power bank that I’d happily recommend.

Really smart design, really well executed. The charge capacity is really good, it kept my phone charged over a weekend camping trip. The individual leads are very durable and it’s neatly tucked away in a compact little box.

This portable battery is an ideal size: it's about as large a capacity as you can take on to an aeroplane, but physically is a nice size and a shape that would slip into a pocket or bag very nicely. It has a reassuring (but not back breaking) weight, it feels solid and well constructed. The Charmast displays battery charge as a percentage which is much better than the 3-4 little winking lights many other batteries have. The display is located under the surface of the battery case, which is cool. It also has a little green symbol which lights up when quick charge is engaged. The battery uses USB-C for fast charging up. It has two charging USB-A outputs and one quicker charge USB-A socket (colour coded for easy of recognition). You can also quick charge a device via the USB-C socket. This means you can a total of four devices on charge at once! If you charge multiple items you lose the ability to quick charge, but this is a reasonable tradeoff for being able to charge four devices at once (I'm doing this now with a phone, a tablet, a digital camera and a pair of headphones, and it's working flawlessly). There are safety circuits to prevent overheating (the battery did not appear to warm up noticeably while working) and also turns off charging when you devices are full. Battery life seems to be about right for the stated capacity, but I will wait to see how it beds in over repeated cycles. All in all this a a fabulous piece of kit for a very reasonable price, especially when its on offer via Amazon. Recommended!

I have a 10,000 mAh Powerbank of almost identical design as this, but not the same Charmast brand. I wouldn’t be surprised if they were both made in the same factory though… I’ve had it a couple of years but it seems to have lost some power recently, so I thought I’d go for this Charmast 20,000 mAh model. What did surprise me is that the 20,000mAh version is not much bigger than the 10,000 version, see photos. I’d have expected a bigger size difference for twice the power. This design with built in cables makes total sense to me, as it seems daft to have to carry a cable separately. I don’t have the kit to test the output accurately, but here are some real life numbers. I charged my iPad Pro from 11% to 100% whilst using it for much of the time. To do that, the powerbank went from 90% to 31%. I didn’t accurately time it, but it seemed fairly quick, like 2-3 hours. The powerbank does get very warm, hot even, when charging a high power device like an iPad. I then connected it to a small (7”) Android tablet that charged from 9% to 64% before using up the remaining 31% in the power bank. This Xiaomi tablet seemed to charge more slowly, and the powerbank also didn’t get as hot as it was when charging the IPad. I assume that’s because the Android tablet cost me less than one tenth the price of the iPad, so probably doesn’t have the same fast charging circuitry. One thing I like about this Charmast powerbank is you don’t have to press the side button to start the charge. That button is only to view the charge percentage when nothing is plugged in. On some powerbanks that I’ve used you had to press a button to switch it on, and if you forgot you’d comeback after a few hours to find out nothing had charged, very annoying. One thing I don’t like is that some of the cable plugs don’t sit flat when stored. It’s a minor thing but does rankle with my OCD. In summary it’s a decent powerbank, and at a fair price. What did hack me off, hence only 4 stars, is that the price dropped by a pound just a few days after I bought it.

Absolutely love this power bank! The 23800mAh capacity keeps my smartphone and tablet fully charged multiple times, and the Quick Charge 3.0 & PD 20W feature charges devices super fast. The LED display is really handy to see the exact battery level at a glance. It’s compact, durable, and works perfectly with all my devices. Perfect for travel, work, or daily use — a must-have portable charger! ✅ Massive 23800mAh capacity ✅ Fast charging with Quick Charge 3.0 & PD 20W ✅ LED display for battery level ✅ Portable, reliable, and compatible with multiple devices Highly recommend — a high-capacity, fast, and dependable power bank!

This is a truly brilliant device. I bought the higher capacity one and am so pleased I did. It’s a manageable weight and seems to last forever! No loss of charge if not used and will fill an iPhone several times over - useful if you are taking loads of photos and using the battery up more quickly than usual. It’s incredibly quick to charge and the convenience of not needing separate leads is huge (it’s yet to be seen how well the built in leads last). I can walk around using my phone as it charges if needs be. Or sit over a coffee while it slurps up the juice for its battery. My daughter snaffled mine when visiting her far away so on return home I immediately bought myself another. I wouldn’t go anywhere without it now.

Not to heavy and can use phone while recharging Six charges from 40% per full powerbank charge and powerbank takes quite a long time to recharge I just do this overnight Very useful having all the wires attached

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!

ممتاز انصح فيه افضل واحد من استعملتهم سابقا انصح فيه بي قوة يتعمل كل شي فيه كل أنواع الأسلاك لي الشحن

Excellent, excellent et encore excellent ! J'adore cette batterie. Pour quelques explications, elle se charge assez lentement, j'en convient mais elle charge environ 3 portables voire un petit peu plus pour d'autres articles telles liseuse.. Les câbles sont certes petits, ce qui est logique, mais hyper pratiques. J'ai acheté 1 autre batterie comme celle-ci tellement j'en suis satisfait

Muito bom. Tem grande capacidade e ter os cabos incorporados dá muito jeito.

Ich hatte den für eine Reise geholt und bin sehr froh darüber. Die ist wirklich praktisch für unterwegs, ich finde es toll, dass die Bowerbank bereits verschiedene Akkukabel dran hat. Dadurch muss man nicht extra die Kabel einpacken, sondern nur die Bowerbank.