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⚡ Power Up Anywhere, Anytime — Stay Charged, Stay Ahead!
The Charmast 20000mAh Power Bank is a powerhouse portable charger featuring 4 built-in cables and 4 extra ports to charge up to 6 devices simultaneously. With 22.5W fast charging, it delivers rapid power boosts, recharging most phones to 50% in about 30 minutes. Its massive battery capacity supports multiple full charges, making it ideal for travel, work, and emergencies. A smart LED display provides precise battery status, while its slim, durable design and included travel pouch ensure convenience and protection on the move.




















| ASIN | B0CJBQBB7F |
| Amperage | 2 Amps |
| Battery Capacity | 20000 Milliamp Hours |
| Battery Cell Type | Lithium Polymer |
| Battery Weight | 74 Grams |
| Battery capacity | 20000 Milliamp Hours |
| Best Sellers Rank | 18 in Mobile Phone Portable Power Banks |
| Brand | charmast |
| Brand Name | charmast |
| Colour | Black-20000mAh |
| Compatible Devices | Smartphone, Smartwatch, Tablet |
| Connector Type | Micro USB |
| Connector type | Micro USB |
| Country of Origin | China |
| Customer Reviews | 4.5 out of 5 stars 4,326 Reviews |
| Is Electric | Yes |
| Item Dimensions | 16 x 7.3 x 1.9 centimetres |
| Item Dimensions L x W x Thickness | 16L x 7.3W x 1.9Th centimetres |
| Item Weight | 340 Grams |
| Manufacturer | Dong guan Utopia-Originality Technology Co., Ltd |
| Manufacturer Part Number | C2065-BLACK-AU |
| Model Number | C2065 |
| Number of Batteries | 2 Lithium Polymer batteries required. (included) |
| Number of Items | 1 |
| Number of Ports | 3 |
| Other Special Features of the Product | Built In Cable, Digital Display, Fast Charging, Over Charging Protection, Short Circuit Protection |
| Portable | Yes |
| Power Source | Corded Electric |
| Product Warranty | 3-year warranty |
| Reusability | Rechargeable |
| Special feature | Built In Cable, Digital Display, Fast Charging, Over Charging Protection, Short Circuit Protection |
| Unit Count | 1.0 count |
| Voltage | 9 Volts (DC) |
J**H
Amazing, but be cautious of overheating
This is one of the best charging blocks that we’ve come across. It’s pretty hefty and is heavier and thicker than our phones but it’s sturdy as hell! It looks sleek and smart and being able to see the charge remaining on the back in big OLED numbers is great! No more more carrying around 3 separate wires for my phone, partners phone and our son’s tablet, this has all three chargers that we need! It will charge my just my partners iPhone 11 or just my son’s kindle fire hd10 about 2-3 times before it needs charging again. Unfortunately it will only charge my power hungry iPhone 17 pro max 1-2 times before needing charging again. It charges relatively quick and if we but it on charge before we go to bed, it is done by morning. Honestly it’s so great that since getting my power hungry phone we’ve bought a second of these so that my phone can have one and my partner and son can use the other. It charges stuff much faster than regularly. The ONLY small downside of this power bank is that we’ve found that because it charges stuff so quick both the bank and whatever we are charging get very hot and before we knew how hot it was, it actually burned my skin. So we have to be careful about what surfaces we charge on and we make sure that the power bank and device aren’t stacked to try cool them down a bit
W**E
Fast charging, inbuilt cables, gorgeous looks - fantastic
I can’t get enough of this power bank, it’s fantastic. It charges my IPhone extremely rapidly, far better than my previous battery pack, and has built in cables, saving me from needing to take extra cables. And the sky blue colour is gorgeous!
D**E
Reliable and fast-charging power bank
I’m really pleased with this power bank. It charges my phone super fast that you can actually see the battery jumping up quickly, which is a lifesaver when you’re low on power. I was super impressed with the speed at which it charged my phone that I had to time it every time I used it. I use an iPhone and in 10 minutes, it gives me a 10-20% bump on my battery depending on how low it is. At the same time, the battery life on the power bank depletes by just 3% in that time. The large capacity means I can get several full charges before needing to top it up again, and the built-in cables plus the digital display showing the remaining battery are really handy touches. The only downside is that while it’s excellent at charging devices, it takes quite a while to recharge the power bank itself. Even with a decent charger, you’ll need patience. It’s also a bit heavier than smaller models, but that’s to be expected with the bigger battery. Overall, it’s a reliable, high-capacity power bank that does exactly what I need. Just plan ahead when it comes to recharging the unit itself.
B**C
Power to the people
Very good power bank 20000mAh has 4 connection cables built in for samsung iPhone and micro usb and usb A for charging also has usb 3.0 usb c and usb 3.2 charging ports .Great for traveling. It will charge my samsung s23ultra 3 to 4 times. Great price.its about the size of a samsung phone. already purchased 2 different colours.
S**T
Brilliant piece of kit
This is simply the best - fast charging, great size. The downside is it’s too heavy to pack in my handbag - but it’s awesome. I can charge my phone up three times from this, and it charges so fast. It does taj]KE several hours to recharge this power bank though but that’s understandable, Probably my best powerbank (out of 7!)
Z**A
One of My Favourites!
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.
P**Y
Excellent
Excellent power bank. The built-in cables are very convenient and save carrying extras. Fast charging works well, and the 20,000mAh capacity easily gives multiple full charges. Solid build and clear battery display. Highly recommended. So good i bought another !
K**R
Bargain at the price I paid.
Good buy and quality product.
H**K
Prima powerbank
Prima powerbank, laad snel mijn telefoon op. Makkelijk door de ingebouwde kabels.
C**X
Great quality power bank
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!
O**E
Excellente charge, petits câble fort pratiques...
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
D**S
One of the best buys on Amazon
I can't say enough good things about this charger. I think I bought 9 of them over the course of a week. Everyone in my family has one...my daughter even gave one to her friend for a birthday present. The different cables mean you can charge just about anything, and using this charger, it's quick than the quick charge plugs that normally come with the device you're wanting to charge. A fully charged charger recharges my phone 4 or 5 times...so on a road trip, I never have to worry about my phone dying. This is a great product.
P**S
Power bank
Muito bom. Tem grande capacidade e ter os cabos incorporados dá muito jeito.
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