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Anker Power Bank, 20,000mAh Portable Charger with 22.5W Max Fast Charging, 2 USB-A, 1 USB-C for iPhone 16/15/14/13/12 Series, Samsung, iPad Pro, AirPods, Apple Watch, and More
Sustainability features
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Return this item for free
We offer easy, convenient returns with at least one free return option: no shipping charges. All returns must comply with our returns policy.
Learn more about free returns.- Go to your orders and start the return
- Select your preferred free shipping option
- Drop off and leave!
Bundles with this item
Purchase options and add-ons
Connector Type | USB-A*2 + USB-C*1 |
Brand | Anker |
Battery Capacity | 20000 |
Color | black |
Special Feature | Fast Charging |
About this item
- Power You Can Bank On: Equipped with 20,000mAh capacity, keep your devices powered for days while you travel for work or leisure. Charge an iPhone 13 4.3 times, or a Galaxy S22 Ultra over 3 times.
- Blazing Fast Speeds: Get the fastest possible charge of up to 20W with 3 USB ports. Charge an iPhone 13 to 50% in 37 minutes.
- Power for 3: Charge your everyday items such as your phone, earphones, and Apple Watch at once.
- Comprehensive Safety System: A combination of 10 safety features that work together to provide ultimate protection for your devices, your chargers and most importantly, you.
- What You Get: Anker 335 Power Bank (PowerCore 20K), USB-A to USB-C cable, welcome guide, our 18-month stress-free warranty, and friendly customer service.
There is a newer model of this item:
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- Sustainability features for this product
Sustainability features
This product has sustainability features recognized by trusted certifications.Carbon impactCarbon emissions from the lifecycle of this product were measured, reduced and offset.As certified byClimatePartner certified
The ClimatePartner certified product label confirms that a product meets the requirements for the five steps in climate action including calculating carbon footprints, setting reduction targets, implementing reductions, financing climate projects and communicating transparently to continuously reduce emissions.Certification Number743M8T - Sustainability features for this product
Sustainability features
This product has sustainability features recognized by trusted certifications.Carbon impactCarbon emissions from the lifecycle of this product were measured, reduced and offset.As certified byClimatePartner certified
The ClimatePartner certified product label confirms that a product meets the requirements for the five steps in climate action including calculating carbon footprints, setting reduction targets, implementing reductions, financing climate projects and communicating transparently to continuously reduce emissions.Certification Number743M8T - Sustainability features for this product
Sustainability features
This product has sustainability features recognized by trusted certifications.Carbon impactCarbon emissions from the lifecycle of this product were measured, reduced and offset.As certified byClimatePartner certified
The ClimatePartner certified product label confirms that a product meets the requirements for the five steps in climate action including calculating carbon footprints, setting reduction targets, implementing reductions, financing climate projects and communicating transparently to continuously reduce emissions.Certification Number743M8T - Sustainability features for this product
Sustainability features
This product has sustainability features recognized by trusted certifications.Carbon impactCarbon emissions from the lifecycle of this product were measured, reduced and offset.As certified byClimatePartner certified
The ClimatePartner certified product label confirms that a product meets the requirements for the five steps in climate action including calculating carbon footprints, setting reduction targets, implementing reductions, financing climate projects and communicating transparently to continuously reduce emissions.Certification Number743M8T - Sustainability features for this product
Sustainability features
This product has sustainability features recognized by trusted certifications.Carbon impactCarbon emissions from the lifecycle of this product were measured, reduced and offset.As certified byClimatePartner certified
The ClimatePartner certified product label confirms that a product meets the requirements for the five steps in climate action including calculating carbon footprints, setting reduction targets, implementing reductions, financing climate projects and communicating transparently to continuously reduce emissions.Certification Number743M8T - Sustainability features for this product
Sustainability features
This product has sustainability features recognized by trusted certifications.Carbon impactCarbon emissions from the lifecycle of this product were measured, reduced and offset.As certified byClimatePartner certified
The ClimatePartner certified product label confirms that a product meets the requirements for the five steps in climate action including calculating carbon footprints, setting reduction targets, implementing reductions, financing climate projects and communicating transparently to continuously reduce emissions.Certification Number743M8T
Top Brand: Anker
Compare with similar items
This Item ![]() Anker Power Bank, 20,000mAh Portable Charger with 22.5W Max Fast Charging, 2 USB-A, 1 USB-C for iPhone 16/15/14/13/12 Series, Samsung, iPad Pro, AirPods, Apple Watch, and More | Recommendations | |||||
Try again! Added to Cart | Try again! Added to Cart | Try again! Added to Cart | Try again! Added to Cart | Try again! Added to Cart | Try again! Added to Cart | |
Price | $44.99$44.99 | $44.99$44.99 | $79.99$79.99 | $44.99$44.99 | $69.99$69.99 | $39.99$39.99 |
Delivery | Get it as soon as Tuesday, May 6 | Get it as soon as Tuesday, May 6 | Get it May 7 - 12 | Get it as soon as Tuesday, May 6 | Get it as soon as Tuesday, May 6 | Get it as soon as Tuesday, May 6 |
Customer Ratings | ||||||
Sold By | AnkerDirect | AnkerDirect | AnkerDirect | AnkerDirect | AnkerDirect | AnkerDirect |
capacity | — | 20000 milliamp hours | 20000 milliamp hours | 20000 milliamp hours | — | — |
connector type | USB-A*2 + USB-C*1 | USB-A*2 + USB-C*1 | USB-C*1+USB-A*1 | USB-A*1+USB-C*1 | USB Type C | USB Type C, USB Type A |
number of ports | 3 | 3 | 2 | 2 | 2 | 2 |
compatible devices | Tablet, iPhone 15/15 Plus/15 Pro/15 Pro Max, iPhone 14/13/12 Series, Samsung, iPad Pro, AirPods, Apple Watch, and More | iphone,phone | Smartphone | iPhone 15/15 Pro /15 Pro Max/14/14 Pro, Samsung, iPad Pro, and More | Tablet, MacBook, iPhone iPhone 15/15 Plus/15 Pro/15 Pro Max, iPhone14/13/12 series, Samsung Galaxy, iPad, and More | Smartphone |
voltage | 5 volts | 5 volts | 5 volts | 5 volts | 5 volts | 5 volts |
battery charge time | — | — | — | 7.5 hours | 28 minutes | 45 minutes |
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Product information
Product Dimensions | 6.55 x 3.26 x 0.93 inches |
---|---|
Item Weight | 1 pounds |
ASIN | B09SFS9J2K |
Item model number | A1288 |
Batteries | 1 Lithium Polymer batteries required. (included) |
Customer Reviews |
4.6 out of 5 stars |
Best Sellers Rank | #2,911 in Cell Phones & Accessories (See Top 100 in Cell Phones & Accessories) #180 in Cell Phone Portable Power Banks |
Date First Available | February 14, 2022 |
Manufacturer | Anker |
Warranty & Support
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Anker Power Bank, 20,000mAh Portable Charger with 22.5W Max Fast Charging, 2 USB-A, 1 USB-C for iPhone 16/15/14/13/12 Series, Samsung, iPad Pro, AirPods, Apple Watch, and More
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Product Description


Trickle Charging Mode
Get optimized charging to low-power devices such as earphones, Bluetooth speakers, and other accessories.
Wide Compatibility
Works flawlessly with a wide range of mobile devices including phones, tablets, and more.
Comprehensive Safety
Anker's MultiProtect safety system combines advanced temperature control, overcharge protection, short-circuit protection, and a fireproof casing to ensure complete protection for you and your devices.
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Anker 335 Power Bank (PowerCore 20K)
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PowerCore Essential 20000 PD
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Customer Reviews |
4.6 out of 5 stars 4,835
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4.6 out of 5 stars 8,576
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4.6 out of 5 stars 8,576
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4.6 out of 5 stars 1,090
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4.5 out of 5 stars 13,545
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4.6 out of 5 stars 6,873
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Price | $44.99$44.99 | $35.99$35.99 | $16.09$16.09 | $134.99$134.99 | $109.99$109.99 | $44.99$44.99 |
Series | Basic | Basic | Basic | Premium | Premium | Basic |
Main Feature | Slim | Built-In C Cable | Built-In C Cable | Built-In C Cable*2 | PD 3.1, Max 140W | Portable |
Output Ports | 2xUSB-A 1xUSB-C | Built-in C Cable + 1C | Built-in C Cable + 1C | Built-in C Cable*2 + 1C1A | 2 USB-C+1 USB-A | 1xUSB-C 1xUSB-A |
Recharging Time | ~6.5 Hours (with PD charger) | ~5.25Hours(20W) | ~2.5 Hours(20w) | ~2 Hours(100W) | ~1 Hour (140W) | ~6.8Hours (with PD |
Size | 6.55 x 3.26 x 0.93 in | 4.72*2.90*1.24 in | 4.32*2.58*0.98 in | 6.18 * 1.93 * 2.12 in | 6.13 * 2.15 *1.95 in | 6.22 x 2.93 x 0.76 in |
Weight | 1.02lb | 0.78lb | 0.47lb | 1.31lb | 1.31lb | 0.55lb |
Model: A1288
Anker 335 Power Bank (PowerCore 20K)
One-Stop Charging for Multiple Devices
Super Huge Capacity
Conveniently power all your essential devices wherever you go thanks to the 20,000mAh battery capacity. Charge an iPhone 13 over 4 times or a Galaxy S22 Ultra more than 3 times.
Charge 3 Devices At Once
Charge your phone, tablet, and earbuds or Apple Watch simultaneously from one power bank.
Designed for Speed
20W fast charging lets you charge an iPhone 13 to 50% in 37 minutes.
Superior Safety
Anker’s exclusive MultiProtect safety technology provides complete protection for you and your devices.
Compatibility
Phones:
iPhone 15 / 15 Pro / 15 Pro Max
iPhone 14 / 14 Pro / 14 Pro Max
Samsung S21
Samsung S22
Google Pixel 5 / 6
Tablet:
iPad 9th Gen
Wireless Earbuds:
AirPods Pro / 3 (with wireless charging case)
Apple Watch:
Apple Watch Series 5 and 7
Notes:
- USB-C to Lightning cable not included.
- Apple Watch cable not included.
- Not compatible with MacBook Pro 13" (2019) and MacBook Pro 16".
- Do not use the power bank in humid environments to prevent oxidation of the USB ports.
- If the power bank is not functioning properly, clean the USB ports with alcohol swabs to reduce contact issues caused by debris or oxidation.
From the brand

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We want you to live without the inconvenience and uncertainty of where your next charge is coming from.
Our chargers and accessories don't just power up your devices, they offer the tech experience you want with zero restrictions.
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Power to Drive Your Prime
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Ultimate Power to Keep Giving
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Doubly Fast in a Snap
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C-ing is Believing
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Anker's Sustainability Plan
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Get Powered Up Now
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Series 7 I Future Technology
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Series 5 I Higher Quality
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Series 6 I Unique Experiences
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Sustainability features
This product has sustainability features recognized by trusted certifications.
Carbon emissions from the lifecycle of this product were measured, reduced and offset.
Customer reviews
Customer Reviews, including Product Star Ratings help customers to learn more about the product and decide whether it is the right product for them.
To calculate the overall star rating and percentage breakdown by star, we don’t use a simple average. Instead, our system considers things like how recent a review is and if the reviewer bought the item on Amazon. It also analyzed reviews to verify trustworthiness.
Learn more how customers reviews work on AmazonCustomers say
Customers find the power bank works like a champ and keeps devices charged all weekend. The build quality is solid, with one customer noting it can withstand travel and daily use. The charging speed receives mixed feedback - while some say it charges devices quickly, others report it takes a while to fully charge. The weight is also mixed, with customers appreciating its portability but finding it somewhat heavy.
AI-generated from the text of customer reviews
Select to learn more
Customers are satisfied with the power bank's battery life, noting that it lasts long and keeps phones charged, with one customer mentioning it provides enough power to recharge their laptop once.
"...During a full charge, it provides enough power to recharge your laptop once and your cell phone up to four times...." Read more
"...I've found that it can fully charge my phone in just a couple of hours, which is a significant improvement over other portable chargers I've used in..." Read more
"...Charges my phone quickly and multiple times between charges. It's heavy, but that's to be expected given the power it packs...." Read more
"...Aesthetics Capacity Cons: No fast input Output does not exceed 12W no matter the device or charge level." Read more
Customers report that the power bank works like a champ and performs remarkably well.
"...With its remarkable performance, sleek design, and user-friendly features, it has earned a well-deserved 6-star rating in my book...." Read more
"...Anker 335 Power Bank (PowerCore 20K) and I have been extremely satisfied with its performance...." Read more
"Great power bank, lasts quite awhile and charges my phone to fill with plenty to spare...." Read more
"Awesome and powerful" Read more
Customers praise the build quality of the power bank, noting its durability and reliability, with one customer mentioning it can withstand travel and daily use.
"...However, this updated design takes the cake. Its build exudes durability, ensuring that it can withstand the rigors of travel and daily use...." Read more
"...It's reliable, fast-charging, and well-made, and I would definitely recommend it to anyone in need of a high-quality portable charger." Read more
"...Very very awesome product. This is the second one I have purchased. I would not try another one." Read more
"...If you’re looking for a reliable, fast-charging power bank with a high capacity, this one’s definitely worth it...." Read more
Customers have mixed experiences with the power bank's charging speed: while some report it charges devices quickly and appreciate the USB C connector for fast charging, others mention it takes a while to fully charge and some units stopped working properly.
"...The USB-C fast charging capability is a notable upgrade, ensuring that your devices are powered up swiftly and efficiently...." Read more
"...It's reliable, fast-charging, and well-made, and I would definitely recommend it to anyone in need of a high-quality portable charger." Read more
"...It takes awhile to charge up completely, but once it's good, it's a beast...." Read more
"Fantastic portable power source. Charges my phone quickly and multiple times between charges...." Read more
Customers have mixed opinions about the power bank's weight, with some finding it portable and ideal for travel, while others note that the battery pack is bulky.
"...Charges my phone quickly and multiple times between charges. It's heavy, but that's to be expected given the power it packs...." Read more
"...The portable charger is compact and lightweight, making it easy to carry around with me wherever I go...." Read more
"...I have had a number of power banks and this is about the heaviest for size vs capacity. But so far it functions as advertised." Read more
"Anker states that this is 476 grams. It is not. It is 487 grams...." Read more
Reviews with images

Great phone charger
Top reviews from the United States
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- Reviewed in the United States on October 1, 2023Color: WhiteVerified PurchaseIt's not often that a product exceeds expectations to the point where it deserves a rating beyond the standard 5 stars, but the Anker Power Bank 20K has done just that. With its remarkable performance, sleek design, and user-friendly features, it has earned a well-deserved 6-star rating in my book.
Durable Design with a Modern Twist:
As someone who has owned a previous Anker power bank, I was already acquainted with the brand's commitment to quality. However, this updated design takes the cake. Its build exudes durability, ensuring that it can withstand the rigors of travel and daily use. The sleek white finish is not only aesthetically pleasing but also resistant to wear and tear.
Dual USB Ports and USB-C Fast Charging:
The inclusion of two USB ports is a game-changer. It allows for the simultaneous charging of multiple devices, making it an ideal companion for those who travel with various gadgets. The USB-C fast charging capability is a notable upgrade, ensuring that your devices are powered up swiftly and efficiently.
User-Friendly Charging Status Indicator:
Reading the charging status has never been easier. The clear and intuitive indicator lights keep you informed about the power bank's remaining charge, eliminating any guesswork. This feature is a testament to Anker's commitment to user convenience.
Impressive Charging Capacity:
The true strength of this power bank lies in its capacity. During a full charge, it provides enough power to recharge your laptop once and your cell phone up to four times. This level of versatility is particularly valuable for those who are constantly on the go, ensuring you stay connected without interruption.
Quick Shipping and Unmatched Quality:
Anker's reputation for quality and reliability is well-deserved. Your expectations are not only met but exceeded. Shipping is swift, and the product arrives exactly as described, reinforcing the trust that Anker has built among its customers.
- Reviewed in the United States on December 24, 2022Color: blackVerified PurchaseI recently purchased the Anker 335 Power Bank (PowerCore 20K) and I have been extremely satisfied with its performance. The portable charger is compact and lightweight, making it easy to carry around with me wherever I go. It has a 20,000mAh battery capacity, which is more than enough to charge my phone multiple times before needing to be recharged itself.
One of the standout features of the Anker 335 Power Bank is its 20W power delivery capability. This means that it can charge devices at a much faster rate than other portable chargers on the market. I've found that it can fully charge my phone in just a couple of hours, which is a significant improvement over other portable chargers I've used in the past.
In terms of build quality, the Anker 335 Power Bank feels solid and well-constructed. It has a sleek and stylish design, with a matte black finish that looks great and doesn't show fingerprints. The power button and USB ports are easy to access and use, and the included micro-USB cable is of good quality.
Overall, I'm extremely happy with my purchase of the Anker 335 Power Bank. It's reliable, fast-charging, and well-made, and I would definitely recommend it to anyone in need of a high-quality portable charger.
- Reviewed in the United States on April 15, 2025Color: blackVerified PurchaseFantastic portable power source. Charges my phone quickly and multiple times between charges. It's heavy, but that's to be expected given the power it packs. It's larger than my phone, but worth the weight!
- Reviewed in the United States on April 10, 2025Color: blackVerified PurchaseReally great product it changed fast and it has multiple ports to charg more than one device. So it's pretty convenient. I'm totally going to take it to work and leave it in my locker so just in case I need to charge my phone or air pods I don't have to look for a outlet.
5.0 out of 5 starsReally great product it changed fast and it has multiple ports to charg more than one device. So it's pretty convenient. I'm totally going to take it to work and leave it in my locker so just in case I need to charge my phone or air pods I don't have to look for a outlet.Convince for work. No need for an outlet
Reviewed in the United States on April 10, 2025
Images in this review
- Reviewed in the United States on December 21, 2024Color: WhiteVerified Purchase4 stars because it's a bit bigger and heavier than i thought, than the image shows. I have had a number of power banks and this is about the heaviest for size vs capacity. But so far it functions as advertised.
- Reviewed in the United States on April 26, 2025Color: blackVerified PurchaseWonderful product fills my phone several times you can also do two phones at the same time and still have power left. Very very awesome product. This is the second one I have purchased. I would not try another one.
Wonderful product fills my phone several times you can also do two phones at the same time and still have power left. Very very awesome product. This is the second one I have purchased. I would not try another one.
Images in this review
- Reviewed in the United States on July 16, 2024Color: blackVerified PurchaseGreat power bank, lasts quite awhile and charges my phone to fill with plenty to spare.
I've left this thing charged for months, then came back to it still full. It takes awhile to charge up completely, but once it's good, it's a beast. I lent it to a friend to charge his laptop up and it did just fine keeping up with the laptop's power draw.
- Reviewed in the United States on March 10, 2025Color: blackVerified PurchaseGreat charger from a great brand. Has plenty of power
Top reviews from other countries
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Łukasz Ś.Reviewed in Poland on December 19, 2024
5.0 out of 5 stars Polecam
Color: blackVerified PurchaseBardzo dobry produkt
-
GlGReviewed in France on February 15, 2025
5.0 out of 5 stars Excellent produit
Color: blackVerified PurchaseTrès bonne batterie externe grande autonomie et excellente finition
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BelalReviewed in Saudi Arabia on April 20, 2025
5.0 out of 5 stars ماركة ممتازه
Color: blackVerified Purchaseالمنتج ممتاز
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Luc WijdeveldReviewed in the Netherlands on August 4, 2023
5.0 out of 5 stars De benchmark van de powerbanks
Color: blackVerified PurchaseGebruik hem o.a. voor timelaps opnamen met de GoPro Hero 9 (foto), maar ook voor continu filmen zonder batterij met de GoPro op de helm, de powerbank zit dan in mijn motorjas met een usb kabel naar mijn helm. Kan wel 5 accu's duur van een Hero 9 aan, 4x mijn Samsung S21-FE (laad tot 85%) als mijn S6 tablet. Het is mijn maatje als ik aan het filmen ben. Hij is wel wat zwaar en heeft een beste omvang, maar de prestaties wegen zwaarder.
Luc WijdeveldDe benchmark van de powerbanks
Reviewed in the Netherlands on August 4, 2023
Images in this review
- HReviewed in the United Arab Emirates on July 28, 2024
5.0 out of 5 stars No bad comments
Color: blackVerified PurchaseGood design. Good quality..worth of cost. So i like it