Anker Zolo Power Bank (2025 Upgraded Version), 20,000mAh 30W High-Speed Portable Charger with Built-in USB-C Cable, Battery Pack for iPhone 17/16 / 15 Series, Galaxy, and More
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 20,206
4.5 out of 5 stars 321
4.5 out of 5 stars 321
4.5 out of 5 stars 669
4.6 out of 5 stars 20,206
4.6 out of 5 stars 3,008
4.4 out of 5 stars 797
Price
$37.99$37.99
$35.99$35.99
$37.99$37.99
$54.79$54.79
$29.99$29.99
$41.99$41.99
$69.99$69.99
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
Go Beyond with 20,000mAh: Carry the power you need to charge your iPhone 15 up to 4 times or your Samsung S24 3.79 times, perfect for extended travel and long days.
30W Two-Way Fast Charging: Charge quickly with 30W output and recharge just as fast with 20W input, keeping your devices ready in no time. Boost an iPhone 15 from 0 to 57% in just 30 minutes.
Durability on Demand: Features a 5.98-inch built-in USB-C cable that’s not only convenient but also extremely durable, designed to withstand over 10,000 bends. This compact power bank measures 4.72 × 2.89 × 1.23″ and weighs only 12.45 oz.
Intelligent Power Management: Equipped with ActiveShield 2.0 technology that monitors temperatures 3 million times per day and adjusts power output for reliable performance.
What You Get: Anker Zolo Power Bank (20K, 30W) with a 5.98-inch (15.2 cm) built-in USB-C cable, welcome guide, 18-month warranty, and our friendly customer service.
12 reviews for Anker Zolo Power Bank (2025 Upgraded Version), 20,000mAh 30W High-Speed Portable Charger with Built-in USB-C Cable, Battery Pack for iPhone 17/16 / 15 Series, Galaxy, and More
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$37.99
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.
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!
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.
Steve –
Not perfect, but closer to the target performance than most other alternatives at a great price.
Okay, let us cover the good part first: It has great PD compatibility. It can do 5V@3A, 9V@3A, 10V@ 2A, 12V@2.5A, 15V@2A, 20V@1.5A. So, that is more than many other power pack out there. (however there are some limitations that I will get to in the later section). The output is max of 30W (I confirmed it). It says it is 10Ah but that is rated at 3.7V which means it is only 37Wh. I have drained it from 100% to 0% and managed to draw 31Wh out of the pack that is rated for 37Wh. That is 84% which is better than just about all the power packs out there that I have experienced. Most other power packs out there can barely do 50% of the rated capacity or 65% on the better ones. The display is nice to know what % of capacity remaining. A sustained draw of 2A @5V will make the pack fairly warm to touch. The USB-C cable that comes with the pack is nice to have. The size is also fairly compact which is easier to carry.Now, let us talk about the down sides: I cycled my first power pack and tried to measure the power rating. The pack PD outputs died after draining it on a constant load of 30W (1.5A @20V) for about 10 minutes. After that, it can only deliver 5V/2A. Then the cabled terminal shows “low voltage”. I am guessing the USB PD IC died inside the power pack. So, Amazon sent me a replacement unit. So far that unit has worked without dying yet. But I would keep an eye on the unit if high power dissipation is needed. I was loading the replacement unit at 1.5A@15V, once it drained to about 25% in capacity, it no longer can sustain that output. Those voltage/amp ratings are really only correct when battery is more than 50% in capacity (that is expected for most lithium ion batteries where peak current output will fall as capacity reduces). The 5V/2A output has no problem sustaining it until 0%. Charging is also not as high as it is indicated. On the back of the unit, it says 5V/3A charging rate, the unit can only sustain 5V/2A charging rate. So, a full charge will take about 3 hours.Overall, it is a decent power pack. I am a fan of Anker products. Although it isn’t perfect or delivering everything it is claiming, it is way closer to its claims than just about any other power packs I have used. If the application only needs 5V/2A(very popular mode), then it can last 3 hours easily.General complain, I really don’t like how power packs are rated or advertised by xxxxmAh. Why don’t we just use Ah? 1000mA is 1A. Isn’t that simpler? Also, those ratings are misleading. The Wh is much more accurate. Of course, most packs can’t deliver those energy level at all the voltages. So, it is another misleading information. At least Anker has delivered the real world rating that are closer to their claim than others.And for the price, I think it is a great value. So I would recommend getting it over other brands. If a 30Wh pack (5V/2A for 3 hours) is good enough for the application, then I think this is the one to get.
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.
Mj –
10/10.
This product is essential, offering reliable and rapid charging. The cable length is limited, necessitating that the portable charger be kept with your device unless a USB Type-A connection is utilized, which is not compatible with newer phone models.It is not particularly heavy, making it convenient to carry. I purchased it approximately six months ago, and it continues to function well.
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!