Anker 335 Power Bank
- Capacity:
- 20
- Max Output:
- 20W Max
- Wireless:
- None
- Weight:
- 463 g (16.4 oz)
Consumercarts is reader-supported. Learn more
Disclaimer: The price and specification of the given product may differ from the actual product. Please confirm on the retailer's website before buying.
Manufacturer: Anker Last updated: 2026-09-15
Where to buy
- Anker.com (EU)Go to store
Anker 335 Power Bank (PowerCore 20K, 20,000mAh, 1x USB-C/2x USB-A, 20W) Review
Anker 335 Power Bank (PowerCore 20K) is a 20,000mAh three-device power bank with 1 USB-C and 2 USB-A ports, 20W max charging, and Anker's MultiProtect safety system.
A straightforward, no-frills high-capacity bank that can charge three devices at once — phone, tablet, and earbuds or an Apple Watch. It won't fast-charge anything by modern standards, but the huge capacity and low price make it a reliable backup for long trips.
Design
Dual USB-A plus single USB-C output lets you power three devices simultaneously; trickle-charging mode suits earphones and small accessories.
Charging
20W max output charges an iPhone 13 to 50% in about 37 minutes; charges an iPhone roughly 4 times or a Galaxy S22 Ultra roughly 3 times per full charge.
Specifications
Identity
| Brand | Anker |
|---|
Ports
| AC Outlet | No |
|---|---|
| Built-in Cable | No |
Size and portability
| Weight | 463 g |
|---|
| Capacity | 20000 mAh |
|---|---|
| Max Single-Port Output | 20 W |
| Total Output | 20W Max |
| Laptop Charging 60W+ | No |
| Ports | 1x USB-C, 2x USB-A |
| USB-C Ports | 1 |
| Display | No |
| Dimensions | 6.55 x 3.26 x 0.93 in (17 x 8.28 x 2.36 cm) |
| Low-Current Mode | Yes (Trickle Charging Mode) |
| Protections | Anker MultiProtect: temperature control, overcharge protection, short-circuit protection, fireproof casing |
Expert Review
Reviewed by Burooj Alam. Rated by us, not by users.
Best for
- Long trips needing maximum backup capacity
- Charging 3 devices at once
- Budget-conscious buyers
Not for
- Fast PD charging
- Laptop charging
- Ultralight carry
FAQs
What are the key specifications of the Anker 335 Power Bank (PowerCore 20K, 20,000mAh, 1x USB-C/2x USB-A, 20W)?
The Anker 335 Power Bank (PowerCore 20K, 20,000mAh, 1x USB-C/2x USB-A, 20W) is a power bank from Anker. Key specs: Capacity 20,000mAh, Max Single-Port Output 20W, Total Output 20W Max, Laptop Charging 60W+ No, Ports 1x USB-C, 2x USB-A.
Will the Anker 335 Power Bank (PowerCore 20K, 20,000mAh, 1x USB-C/2x USB-A, 20W) work with my current setup?
The Anker 335 Power Bank (PowerCore 20K, 20,000mAh, 1x USB-C/2x USB-A, 20W) lists Capacity is 20,000mAh. Check that against the hardware you already own before buying, since this is the field that most often decides whether a part fits.
Who is the Anker 335 Power Bank (PowerCore 20K, 20,000mAh, 1x USB-C/2x USB-A, 20W) best suited to?
It suits long trips needing maximum backup capacity, charging 3 devices at once, budget-conscious buyers.
What are the drawbacks of the Anker 335 Power Bank (PowerCore 20K, 20,000mAh, 1x USB-C/2x USB-A, 20W)?
It is a poor fit for fast pd charging, laptop charging, ultralight carry.
Compare and read more
- Anker 335 Power Bank (PowerCore 20K, 20,000mAh, 1x USB-C/2x USB-A, 20W) vs Omnicharge Omni 20+ (20,000mAh/Mil-Spec Drop-Tested/Integrated AC Inverter and Wireless Pad)
- Anker 335 Power Bank (PowerCore 20K, 20,000mAh, 1x USB-C/2x USB-A, 20W) vs Goal Zero Venture 30 (10,400mAh/IP67 Waterproof/Solar-Ready Input/Battery Gauge)
- Anker 335 Power Bank (PowerCore 20K, 20,000mAh, 1x USB-C/2x USB-A, 20W) vs Baseus EnerGeek 30000mAh (200W Car-Jump-Start-Rated Power Bank with Digital Display and 4 Simultaneous Outputs)
- Anker 335 Power Bank (PowerCore 20K, 20,000mAh, 1x USB-C/2x USB-A, 20W) vs Belkin BoostCharge Plus Wireless (10,000mAh/Qi Wireless Pad with Built-in Kickstand for Video Calls)
- Anker 335 Power Bank (PowerCore 20K, 20,000mAh, 1x USB-C/2x USB-A, 20W) vs BLUETTI AC60 (403Wh/IP65 Weatherproof/600W AC Outlet/Outdoor and Marine Power Station)