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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

  • Based on 25,685 reviews
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Availability: In Stock.
Fulfilled by Amazon

Arrives Monday, Jul 27
Order within 12 hours and 8 minutes
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Color: Black


Size: 20000 MAh


Features

  • 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.

Description

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. Anker 20K 30W Power Bank Anker 20K 45W Power Bank Anker 20K 45W Power Bank Anker 20K 30W Power Bank Anker 10K 30W Power Bank Anker Nano 3-in-1 Anker 65W Power Bank Visit the Store Visit the Store Visit the Store Visit the Store Visit the Store Visit the Store Visit the Store

Connector Type: USB Type C


Brand: Anker


Battery Capacity: 20000 Milliamp Hours


Color: Black


Special Feature: Built In Cable


Connector Type: USB Type C


Battery Capacity: 20000 Milliamp Hours


Other Special Features of the Product: Built In Cable


Voltage: 20 Volts


Power Source: Corded Electric


Amperage: 3 Amps


Number of Ports: 3


Battery Charge Time: 5 Hours


Is Product Cordless: No


Portable: Yes


Compatible Devices: Smartphone


Reusability: Rechargeable


Number of Outlets: 3


Is Electric: No


Color: Black


Battery Cell Type: Lithium Polymer


Brand: Anker


Model Number: A1689


Number of Items: 1


UPC: 194644038403


Mfr Part Number: A1689011


Number of Batteries: 1 C batteries required.


Warranty Description: 18.00


External Testing Certification: /


Manufacturer: Anker


Antenna Location: Phone


Item Weight: 365 Grams


Item Dimensions L x W x Thickness: 4.72"L x 2.89"W x 1.24"Th


Unit Count: 1.0 Count


Item Dimensions: 4.72 x 2.89 x 1.24 inches


Battery Weight: 270 Grams


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Monday, Jul 27

Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.

To initiate a return, please visit our Returns Center.

View our full returns policy here.

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Leasing options through Acima may also be available during checkout.

Learn more about financing & leasing here.

Top Amazon Reviews


  • Major Upgrade from the Previous Version – Smaller, Lighter, Same Power
Color: Black Size: 10000 MAh
I’ve actually owned the first version of this battery pack, and the difference with this newer model is immediately noticeable. The original one I had was significantly bigger and bulkier, so I was honestly surprised (in a good way) that this updated version is much more compact while still delivering the same performance and specifications. It feels like a true upgrade rather than just a refresh. From what I experienced, the older, larger version was eventually recalled, so it’s reassuring to see that this newer model not only addresses those concerns but improves the overall design. Performance wise, it does exactly what you want from a high quality battery pack. It charges devices quickly and consistently, holds a solid charge over time, and is reliable when you need it most. I’ve used it for my phone and other devices, and it handles multiple charges without any issues. A few things I really like: • Much more portable and easier to carry around compared to the previous version • Solid build quality that feels durable and well made • Fast and efficient charging • Great capacity without the added bulk • Perfect for travel, work, or just keeping in your bag for everyday use Overall, this is a big improvement over the original. If you were hesitant because of how bulky older versions were, this one fixes that completely while still delivering the same power. Definitely worth it. Added photo next to wallet for scale ... show more
Reviewed in the United States on March 24, 2026 by Mark

  • Durable and reliable power bank for everyday use
Color: Black Size: 10000 MAh
I’ve been using this Anker power bank for about 2 years now, and it’s been very reliable. It’s taken a decent amount of abuse drops, travel, even camping trips, and it’s still going strong with no issues. The built-in USB-C cable makes it super convenient since I don’t always have to carry an extra cable with me. Battery performance has also been good. Even if I leave it unused for a while, it still holds its charge pretty well and doesn’t drain quickly. I’ve actually bought a few more for friends when they were on sale, and they’ve all had good experiences too. Overall: Great power bank, especially if you can get it on sale. ... show more
Reviewed in the United States on April 11, 2026 by Jack

  • Reliable, inexpensive, convenient
Color: Black Size: 10000 MAh
I've used, and have overworked this thing for two years now. Battery capacity is awesome, I'm able to keep my phone charged throughout my 12hr shifts with no problems. The unit itself isn't heavy, or all too big, and the built-in cable is convenient for both charging your phone and charging the battery pack itself. The pack itself charges my phone real fast, and when it comes to charging using a wall plug, it charges real fast too. At 30W, it's about as fast as you need it to be, I'm able to use my phone to 0%, and have it fully charge twice using this pack, it is no slouch when it comes to power delivery. The on-screen display also makes it very convenient to quickly check how much juice it has left. This thing is also built like a tank, I've dropped this thing more times than I'd like to admit, and it has no visible scratches or impairment to its operation. This will continue to be my daily driver for the next couple years hopefully. ... show more
Reviewed in the United States on April 28, 2026 by Jesus Beltran Alvarez

  • great product
Color: White Size: 10000 MAh
works really well, fast charge. came with a partial battery life. sleek, not heavy, easily able to be carried in a purse of small fanny pack. gets a little warm when using it so look out for that. holds good power. looking forward to bringing it on our trip.
Reviewed in the United States on April 12, 2026 by Kashton

  • Good quality, not the best shape
Color: Black Size: 10000 MAh
This battery pack is impressive for the price - I got it for just $20. The charging speed is fast, it feels well-made, and the attached cable works well and seems like it won't wear out. The capacity isn't the largest out there, but it seems to match the spec of 10k mAH, so that's nothing to complain about. Charging my phone from empty uses more than half of the battery. The main complaint I would have is that the shape isn't ideal. It's narrower than most battery packs, but also thicker. Carrying it in your pocket is not difficult (for men's pockets), but it's a bigger bulge than most. Also, if you want to hold it behind your phone in order to use your phone while charging, the fit is less comfortable. Overall, while I like Anker as a brand and I think they made a good product, I might consider other versions. ... show more
Reviewed in the United States on May 1, 2026 by Alex

  • perfect portable charger, very reliable
Color: Black Size: 10000 MAh
this charger is honestly SO good. i’ve used a lot of portable chargers before and this one is easily one of the best. i charged my phone from around 25–30% all the way to 100%, and the battery pack was STILL at about 80–90% after. that’s actually crazy. it literally lasts all day and sometimes even DAYS depending on how much you use it. one of my favorite features is the built-in cable. it makes everything so much easier because you don’t have to carry extra cords around or worry about forgetting one. super convenient, especially when you’re out. i also LOVE the display that shows the exact battery percentage. it’s way better than guessing with little bars because you always know exactly how much charge you have left. it charges fast, holds a lot of power, doesn’t overheat and is just really reliable overall. perfect for everyday use, traveling, or being out all day. ... show more
Reviewed in the United States on April 8, 2026 by sonia

  • Good basic power bank.
Color: Black Size: 20000 MAh
Good product as Anker items have always been for me. Has large capacity and charges items quickly. Have charged a tablet and multiple phones and the power bank has not run out of juice yet. The built-in usb c cable is a great feature.
Reviewed in the United States on April 22, 2026 by Robert Evans

  • Great quality
Color: Blue Size: 10000 MAh
Love this power bank. I fully charged it 5 days ago and it is still at 100%. We lost power at my house a few days after I received it so I had an excuse to use it, it charged my phone very quickly. It does not come with a charging block and the charging cable is very short. Luckily I found a 6 ft Anker charging cable and charging block at CVS, so that fixed that problem. Love how small it is, fits easily in the cord organizer case I have for my purse. The display is very easy to read and it's extremely ease to use. You have to scan a QR code for the instructions but you really don't need them it's that easy to use. ... show more
Reviewed in the United States on March 24, 2026 by Amanda Root

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