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 2.5 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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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 ID: 779795795

Details

Battery Capacity
20000 Milliamp
Brand
Anker
Color
Blue
Connector Type
USB Type C
Special Feature
Built In Cable

⚡30W two-way fast charging

🔋20,000mAh powerhouse

🔌5.98-inch ultra-durable built-in USB-C cable

$99.00

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Sold byAmazon USADelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Description

⚡ Stay charged, stay ahead — power that moves with you!

BUILT TO LAST - Durable built-in USB-C cable withstands over 10,000 bends, combining convenience with rugged reliability.
CHARGE LIKE A PRO - Power your iPhone 15 up to 4 full charges or Samsung S24 nearly 4 times—never run out during your busiest days.
SMART SAFETY TECH - ActiveShield 2.0 monitors temperature 3 million times daily, ensuring safe, optimized power delivery.
COMPACT POWERHOUSE - Sleek, lightweight design (4.72 x 2.89 x 1.23 inches, 12.45 oz) fits perfectly in your bag or hand for on-the-go energy.
SPEED THAT KEEPS UP - 30W output and 20W input means rapid charging both ways—get 57% battery on iPhone 15 in just 30 minutes.

The Anker Zolo Power Bank (2025 Upgraded Version) is a high-capacity 20,000mAh portable charger featuring 30W two-way fast charging and a built-in 5.98-inch USB-C cable designed for durability. Compatible with the latest iPhone 17/16/15 series, Samsung Galaxy, and more, it offers rapid charging speeds, intelligent temperature management with ActiveShield 2.0, and a compact, lightweight design perfect for professionals on the move.

Specifications

ASIN	B0CZ9JLN3N
Antenna Location	Phone
Battery Capacity	20000 Milliamp Hours
Battery Cell Type	Lithium Polymer
Battery Charge Time	5 Hours
Battery Weight	270 Grams
Best Sellers Rank	#51 in Cell Phones & Accessories ( See Top 100 in Cell Phones & Accessories ) #4 in Cell Phone Portable Power Banks
Brand	Anker
Color	Blue
Compatible Devices	Smartphone
Connector Type	USB Type C
Customer Reviews	4.5 4.5 out of 5 stars (25,598)
Is Electric	No
Is Product Cordless	No
Item Dimensions	4.72 x 2.89 x 1.24 inches
Item Dimensions L x W x Thickness	4.72"L x 2.89"W x 1.24"Th
Item Weight	365 Grams
Manufacturer	Anker
Mfr Part Number	A1689
Model Number	A1689
Number of Batteries	1 Lithium Polymer batteries required. (included)
Number of Items	1
Number of Outlets	3
Number of Ports	2
Other Special Features of the Product	Built In Cable
Portable	No
Power Source	Corded Electric
Reusability	Rechargeable
UPC	194644038380
Unit Count	1.0 Count
Voltage	20 Volts
Warranty Description	18.00

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$99.00

Duties & taxes included

In stock

Sold byAmazon USADelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

Buyer Protection · Full refund if your order doesn't arrive as described.

Desertcart purchases this item on your behalf and handles shipping, customs, and support to USA.

Secure transaction

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TrustScore 4.5 | 7,300+ reviews

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