Anker Power Bank (20K, 30W, Built-in USB-C Cable) B2C – UN Black Iteration 1
Original price was: $35.99.$33.99Current price is: $33.99.
Price: $35.99 - $33.99
(as of Jan 07, 2026 12:11:06 UTC – Details)
Product description
1 About Anker Zolo
2 Stylishly Designed
3 Multi-charging
4 Two-Way Charging
5 Built-In Cable
1 Real-Time Protection
2 Digital Display
3 Durable Cable
4 Universally Compatible
5 Product Comparison
1 Power for Every Moment
2 Power for Travel
3 Power During Breaks
4 Power for Everyday
Is it normal for the charging speed to be slow?
The charging speed depends on whether the charger and cable can meet the power bank’s requirements. Using a 20W fast charger, the power bank can be fully charged in approximately 5.1 hours.
Can it charge low-current devices like earphones?
Yes, this power bank features a low-current charging mode.Simply double tap the power button to enter this mode to charge small electronic devices and double tap again to exit!
Does it support charging while discharging?
Yes, the power bank supports pass-through charging with a max input and output of 5V/3A. Note that it does not support simultaneous charging and discharging for laptops. For longevity, avoid charging your phone while charging the power bank.
How can I estimate the number of charges for my device?
To estimate charges, use this formula: (Power Bank Capacity × 0.65) ÷ Device Battery Capacity. For example, an iPhone 15 with a 3,877mAh battery can receive about 1.67 charges from a 10,000mAh power bank (10,000mAh × 0.65 ÷ 3,877mAh).
Why is my power bank providing fewer charges than expected?
Energy loss during charging, due to inefficiencies in the battery cells and circuitry, results in a 30% to 45% capacity reduction. Therefore, a fully charged Anker Zolo 20,000mAh Power Bank typically provides about 11,000mAh to 14,000mAh.
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Customer Reviews
4.6 out of 5 stars 19,738
4.5 out of 5 stars 264
4.5 out of 5 stars 264
4.6 out of 5 stars 639
4.6 out of 5 stars 19,738
4.6 out of 5 stars 2,977
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Price
$33.99$33.99
$44.99$44.99
$49.99$49.99
$54.79$54.79
$25.99$25.99
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Main Feature
Built-In C Cable
Built-In C Cable
Built-In C Cable*2
Built-In Cable*2
Built-In Cable
3-in-1 Charger + Built-In
Built-In AC Plug
Charging Ports
Built-in C Cable + 1C1A
Built-in C Cable *2 + 1C1A
Built-in C Cable + 1C1A
Built-in Cable L+C+1A1C
Built-in C Cable + 1C1A
Built-in C Cable + 1C
USB-C*2
Maximum Output Power
30W
45W
45W
30W
30W
30W
65W
Size
4.72*2.90*1.24 in
4.72*2.90*1.24 in
4.72*2.90*1.24 in
4.72*2.90*1.24 in
4.32*2.58*0.98 in
4.25*1.97*1.22 in
4.53*1.65*1.71 in
Weight
0.78lb
0.78lb
0.8lb
0.8lb
0.47lb
0.55lb
0.67 lb
Compatible Devices
iPhone17/16/MacBook/Galaxy
iPhone17/16/MacBook/Galaxy
iPhone17/16/MacBook/Galaxy
iPhone17/16/15/14/MacBook
iPhone17/16/MacBook/Galaxy
iPhone17/16/MacBook/Galaxy
iPhone/MacBook/Galaxy
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Specification: Anker Power Bank (20K, 30W, Built-in USB-C Cable) B2C – UN Black Iteration 1
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13 reviews for Anker Power Bank (20K, 30W, Built-in USB-C Cable) B2C – UN Black Iteration 1
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Original price was: $35.99.$33.99Current price is: $33.99.
Sefora Tocai –
Worth it.
This thing is a beast. Charges very fast the device and battery last multiple charges. It’s bulky but it’s not terrible to carry around or throw in a bag. Great for travel or work or school or anything. Very good quality I recommend. It functions great.
Mikaela Jamison –
Reliable, charges fast
Very convenient to have the cord built-in. I like the screen that shows how much battery you have left. The snap for the cord is also somewhat strong, and although I wouldn’t put it on the outside of my bag because I don’t want it getting beat up or scratched, I think it would be fine to clip this via the cord on the outside of your bag or backpack. It’s somewhat heavy and awkward to fit in a bag, but it’s also paradoxically small. It charges my devices very quickly, but takes a while to charge itself. But if I am doing anything serious that might require a charge on the go, I take this with me because I know it will have me covered!
BBUSA –
Excellent power bank — fast, compact, and perfect for travel
This Anker 10,000mAh 30W power bank has quickly become my go-to charger for both travel and daily use. It strikes a great balance between size, power, and reliability, which is exactly what I was looking for.Pros:Fast 30W USB-C charging: Charges my iPhone 15 Pro very quickly and can even provide a solid charge to my iPad and MacBook in a pinch.USB-C in & out: Super convenient — one cable handles both charging the power bank and charging devices.Compact and portable: Small enough to fit in a pocket or backpack without feeling bulky.Trusted Anker quality: Feels solid, well-built, and performs consistently with no overheating.Great for travel: Perfect size for flights, road trips, and everyday carry.Minor notes:10,000mAh is ideal for phones and tablets, but not meant for multiple full laptop charges — which is expected at this size.Only one device can fast-charge at full speed at a time.Overall:If you want a reliable, fast-charging, and travel-friendly power bank, this Anker model is an excellent choice. Great performance, smart design, and dependable quality — highly recommended.
AJ –
This may be the greatest powerbank of all time.
I really like this little Anker power bank! For the promo price of $20 I paid, it honestly might be the greatest power bank of all time. It has become my go-to travel companion for medium to long trips because it is surprisingly light and compact, easy to slip in a bag or even a pocket.The built-in USB-C cable feels sturdier than I expected. I originally thought it would be the weak point, but so far it has held up well. The digital display is also a huge upgrade over the usual 4 or 5 dots most power banks use. It is so much better knowing the exact percentage instead of guessing.It charges devices quickly, and I am able to get two full charges out of it for my iPhone 13 pro max. The build quality feels solid, just like every other Anker product I have owned. The only time it got hot for me was when I tested it to see how much it would charge my Macbook. Otherwise heat is a nonissue.This is an excellent, compact charger with a ton of value for the price. I would not hesitate to recommend it to anyone.
James Sandoval –
Reliable Power You Can Count On
As a parent who’s always on the move, this Anker 10,000mAh Portable Charger has become one of my everyday essentials. It’s compact, lightweight, and powerful enough to charge my phone, tablet, or even my laptop when I’m traveling or running errands with the kids. The 30W fast charging really delivers—you can top up a phone in no time, and the USB-C in/out port makes it super convenient. It feels solid, holds a charge well, and fits easily in a pocket or bag. Honestly, it’s the kind of backup power you don’t realize you need until you have it—and then you never want to go without it.
Charles Stringfellow –
Perfect charger
This charger is perfect for my needs. My son plays baseball and I was somehow given the responsibility of running GameChanger. Well, when you play 4 games in a day, the phone battery needs to be recharged. This device is perfect for that. It fits in my pocket and comes with a cord that plugs directly in my phone. It takes about 4 hours to fully charge and charge my phone around twice. I’ll be buying another one just to have a spare.Update I bought the spare. Attached in the picture is the 10 & 20 for size comparisons. Both work really well.
Happy Buyer –
Portable fast charging powerbank with in built cable
I’ve been using this 10,000 mAh power bank for nearly a year. The power bank holds the charge well. The inbuilt type C cable is strong and durable. It saves us the hassle of carrying a cable around. I have not measured to see whether the inbuilt cable output measures 30 watts, but it does show fast charging in my phone. It allows me to charge my phone at least 2 times, which is good enough for my needs.It has a big display which shows the actual percentage of how much charge is left in the powerbank, which is preferable over the regular light dots system. However, the screen has a glossy finish, which does get scratched up after a while.It is compact in size but a little bulky in thickness. I haven’t experienced any overheating or swelling of the power bank as of now and is still holding strong.It serves my purpose well and would highly recommend it.
Barry R. –
USB C cable is attached
Great product from Anker which has a reputation for quality. Having that USB C cable permanently attached is a game changer. No more fumbling around with long cables or not having one available. Small enough to fit in some pant pockets together with an iPhone. Charges very fast. I take it with me backpacking. No more dead phone when I need it in the backcountry. I got the 10,000 mah one and that really is all I need.
Ana –
It takes a while to charge to 100%, but it lasts for almost 4 cicles
Alessandro C. –
L’ho comprata per la mia ragazza che ahimè tende a dimenticare cavi/cavetti. Quando trovo anker vado sempre sul sicuro. Questa è perfetta, il cavo necessario a caricare il telefono vi rimane sempre collegato e funziona anche per caricare la stessa batteria, che comunque ha un cavetto apposito in dotazione da collegare a una porta usbc. Per caricare il dispositivo ha anche una porta usba.
Lubranello –
Uso questo powerbank da circa 4 mesi. Scelto per le dimensioni a saponetta e per la possibilità del cavo integrato. Comprato prima dell’estate, da allora lo porto sempre con me nella mia sling da 2 litri. I 10.000mah sono il giusto compromesso tra capacità energetica, peso e dimensioni soprattutto se viene usato per ricaricare i dispositivi di una sola persona. Ci carico uno smartphone con una batteria da 5000 circa due volte considerando però che non arrivo mai con una batteria mai al di sotto del 30/35%. È possibile caricare contemporaneamente 3 dispositivi e in confezione viene fornito un ulteriore cavo usb-c usb-c, corto ma sempre meglio di niente. Cosa importante è che può essere ricaricato mentre a sua volta carica altri dispositivi.Il display è minimale e mostra solo lo stato di carica delle batterie interne.Le uniche pecche, a mio avviso, sono le plastiche che si graffiano facilmente e la sua ricarica a soli 20W che fa si che una sua carica completa duri circa 2.30h. Per il resto è un ottimo prodotto offerto ad un buon prezzo.
Abdellah –
Très bonne qualité, charge trois fois 100%
anthos –
Ottimo prodotto. Riesci a caricare il mio iPhone ben 2 volte!