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The charmast Portable Charger is a sleek, 20000mAh lithium polymer power bank featuring 6 output ports and built-in USB-C, Micro-USB, and Lightning cables. It delivers 22.5W fast charging with a precise digital battery display, supports worldwide voltage (100V–240V), and is flight-approved under 100Wh. Ideal for multi-device users, it offers up to 4 full charges per cycle and comes with a 36-month warranty and travel pouch.















| ASIN | B0CJBQJZ5F |
| Amperage | 3 A |
| Antenna Location | Compatible with all Samsung and Pixel models, mainstream Android phones, Compatible with iPad, Tablet, Compatible with iPhone 14/13/12/11/XR, all series, etc, Compatible with iPhone 16/15 Pro/Pro Max series, Compatible with iPhone 17/iPhone 17 Pro/iPhone 17 Pro Max |
| Battery Capacity | 20000 milliamp_hours |
| Battery Cell Type | Lithium Polymer |
| Battery Charge Time | 6 hours |
| Battery Weight | 148 g |
| Best Sellers Rank | #680 in Cell Phones & Accessories ( See Top 100 in Cell Phones & Accessories ) #69 in Cell Phone Portable Power Banks |
| Brand | charmast |
| Color | Navy |
| Compatible Devices | Compatible with all Samsung and Pixel models, mainstream Android phones, Compatible with iPhone 14/13/12/11/XR, all series, etc, Compatible with iPhone 16/15 Pro/Pro Max series, Compatible with iPhone 17/iPhone 17 Pro/iPhone 17 Pro Max, Tablet |
| Compatible Phone Models | Android |
| Connector Type | For iPhone, USB-C, USB-A, Micro |
| Current | DC |
| Customer Reviews | 4.5 out of 5 stars 7,111 Reviews |
| Included Components | 20000mAh Portable Charger, Storage Bag, User Manual |
| Item Dimensions | 6.3 x 2.85 x 0.75 inches |
| Item Dimensions L x W x Thickness | 6.3"L x 2.85"W x 0.75"Th |
| Item Weight | 340 g |
| Manufacturer | Dong guan Utopia-Originality Technology Co., Ltd |
| Maximum Output Power | 22.5W |
| Mfr Part Number | C2065-BLUE-AU |
| Model Name | C2065 |
| Model Number | C2065 |
| Number of Batteries | 2 Lithium Polymer batteries required. (included) |
| Number of Items | 1 |
| Number of Ports | 4 |
| Other Special Features of the Product | Auto Shut-Off, Built In Cable, Digital Display, Fast Charging, High Capacity |
| Output Current | 5 A |
| Power Source | Corded Electric |
| Rapid Charging Performance | 55% in 1 Hour |
| Reusability | Rechargeable |
| Special Feature | Auto Shut-Off, Built In Cable, Digital Display, Fast Charging, High Capacity |
| Unit Count | 1 Count |
| Voltage | 5 volts |
| Warranty Description | 36-Month Warranty |
| Warranty Type | 36-month support |
T**N
**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 :)
A**R
This little thing packs power
I bought a different brand of this because I saw it on Today and I have been traveling a lot for work and the other was always running out even if I did not have huge delays. I came back to buy another one of those but this one had better reviews and it cost the same so I bought this. What a difference!! I have been using it at home to test it out. It takes longer to charge but once it does it charges my phone quickly even when it’s at 50% and remains over 80% after doing so. There is also an adapter to charge a lap top and a few other types of devices. Highly recommend.
A**R
Peace of Mind!!!
This is one of the most practical items I own! It has saved me from stress during power outages, allowed me to use my dying phone while traveling,, and even kept the battery on a medical device charged, it was well worth the money spent as it has significantly reduced my stress leels!
9**H
Fast Charger
Best charger I've purchased. It's great having all the different cables attached and charges my phone quickly. It's not bulky but is a little heavy. Like that it shows the % remains of power instead of the lights.
S**N
Super handy
I have bought this charger multiple times. I had one for each family member for our trip to Europe. It’s super handy to have all of the cables needed attached to the charger. This more powerful one is kind of heavy but it has more power. The one with less power is lighter and smaller. You just have to decide when and where you want to use it and how heavy you want it to be but both versions are great.
Z**A
I love it!
I really like this bank; it's pretty heavy but charges my phone wayyy faster than my charger. But I also have an old phone (Galaxy A14), so that could be a contributor. Overall, I love this bank; the multiple cords make it convenient (although I have only used USB-C so far). It does take a while to charge but takes much, much longer to run out. If I charge it up to 100, I am good for at least 3 days. The only reason I gave it 4 stars is that it doesn't charge my laptop(HP Omnibook 3). Which could be because it's a 20W charger, and laptops require atelast W45 or W60. Overall, it serves its purpose very well and feels very high quality.
M**A
Great Portable Charger!
This portable charger is so awesome! It comes with a little bag to hold it in which I didn’t realize when buying. I thought that was convenient so I can keep it safe when in my bag. It’s slim. I love how quickly I can charge my phone with it and that you can charge a lot of devices at once. And the charge lasts a long time on it
K**K
Stopped Working Properly
I bought this to use on a trip and it worked well the first few days. After the third day, it would not charge my phone. The battery would be charged, but when I plugged the cable into my phone it would not start charging at all, or start charging for a minute and then stop again. I'm unsure if I got a faulty device or if this is a common issue but I'm disappointed with my purchase.
F**D
I love it
It's been more than I year and it still works perfectly.
M**D
Good reliable charger
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 owned Overall, 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.
K**E
AVOID - Total rip off. Faulty product.
Beware this product is faulty. Power bank stopped working after 2 months. Worked great for 6 weeks and then the USB C cord started to only work every now and again. It's totally stopped charging now and the "return window" has closed. I even wrote a 4 star freebie for this age a coke of weeks. I hope the seller sees this review and offers an exchange. If not, this is a complete rip off. I will update if I get satisfaction from the seller. Until then I would avoid this product. 100% rip off. Faulty product.
C**E
Long review with test results!
I ran some tests with this device using 3 cord options (USBC, lighting and micro) and the stats are below. All tests the battery nor the device got warm and the battery percentage is always displayed. The time taken to charge battery from 0 to 100 is as advertised about 6ish hours using the USBC port. The device itself is a little weighty but that is definitely insignificant to the pros. It charged all three devices consecutively and still had over half its battery left. The built in cord length is sufficient for my needs (about 12.5cm) however if you rely on a long cord or just prefer that then you have the option to plug another cord direct into the battery pack. I would definitely recommend and will also be buying another for hubby. Test 1: iPhone 14 pro at 50% (using built in lighting bolt cable) Time taken to get to 100% = 84 mins Percentage of power taken from battery pack = 10% Test 2: Ipad mini 5 at 0% (completely flat) + apple pen 2nd gen at 15% (using built in USBC cable) Time taken to get to 100% for Ipad and pen = 110 mins Percentage of power taken from battery pack = 33% Test 3: Kindle Oasis at 67% (using built in micro cable) Time taken to get to 100% = 55mins Percentage of power taken from battery pack = 3% After all three of the tests above the battery pack was at 54%
A**T
Must have
I love these and they are extremely cheap for what you get out of it, they are small enough to fit in your pocket and charge your phone multiple times if needed, they have usb a and usb and usb c, so it’s easy to plug in multiple devices to this and it charges your devices very quickly, only downside is it takes a long time to charge the actual battery pack, but I have a few of these and love the functionality, it’s great to have them laying around to be able to leave the house if your phone is low battery you have nothing to worry about
Trustpilot
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