Anker 335 Power Bank (PowerCore 20K)

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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.

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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.

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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.

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 13 / 13 Pro / 13 Pro Max / 13 Mini

iPhone 12 / 12 Pro / 12 Pro Max / 12 Mini

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".

Specs

Output

20W Max

Number of USB-C Ports

1 USB-C Ports

Number of USB-A Ports

2 USB-A Port

Number of Outputs

Dimensions and Weight

Dimensions:
6.55 x 3.26 x 0.93 in / 17 × 8.28 × 2.36 cm

Weight:
463g / 16.4 oz

Downloads

Declaration of ConformityA1288 DOC2024-09-27

The World's No. 1 Mobile Charging Brand*

200 Million+
200 Million+ Products Sold Worldwide
146 Countries

Available in 146 Countries
10 Years of Innovation

Pioneer in Charging Technology for 10 Years

*In terms of retail value sales in 2020, 2021, and 2022.
Data source: Euromonitor International (Shanghai) Co., Ltd., measured in terms of retail value sales in 2020, 2021, and 2022, based on research conducted in October 2023. Mobile charging brands are defined as brands if more than 75% of their retail sales are contributed by mobile phone charging products. Mobile phone charging products include chargers, wireless chargers, power banks, and charging cables, and these accessories can also be used for other consumer electronics devices.