How many times can it charge a phone?

With 20,000mAh it typically gives a modern phone three to five full charges, depending on the phone's battery size and charging losses.

Does it support fast charging?

No. Outputs are standard 5V/2.1A, so phones charge at normal speed rather than with fast-charge or Power Delivery.

Can it charge a laptop?

Not practically. The USB-C port is not high wattage, so it suits phones, earbuds and small accessories, not laptops.

How do I recharge the power bank?

Use the USB-C port or the Micro-USB input with a wall charger. A full recharge takes several hours given the large capacity.

The power bank and a short USB-A to Micro-USB charging cable. You supply your own USB-C cable and wall adapter.

Can it charge two devices at once?

Yes. The two USB-A outputs can run together, though charging two devices splits the output and slows each one.

What do buyers say about the Pocket Juice 20,000mAh Slim Pro Portable Power Bank?

Rated 4.5 out of 5 from 5,393 ratings.

Where can I buy the Pocket Juice 20,000mAh Slim Pro Portable Power Bank?

2 stores we checked sell it, including Best Buy, Walmart.

Pocket Juice 20,000mAh Slim Pro Portable Power Bank

Q: Where is the Pocket Juice 20,000mAh Slim Pro Portable Power Bank cheapest?

At Best Buy, for $23.19, as of our latest check.

Best price now

$23.19at Best BuyChecked 57 min ago

Compared across 2 stores. Prices are checked against each store and labelled with when. Store links may earn us a commission. Price via Klarna.

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What reviewers say

4.5 / 55,393 ratings

Reviewers rate the Slim Pro highly, mostly for its capacity, slim build and simple LED gauge. Complaints center on charging speed and the short included cable rather than reliability.

What people mention

CapacityPraisedOwners say it delivers several full phone charges per top-up.
Size and weightPraisedReviewers find it slim and light for a bank this large.
Charging speedCriticisedMany say phones charge slowly because output is standard 5V, not fast charging.
Included cableCriticisedThe short Micro-USB cable is called out as limiting for USB-C phones.
Battery indicatorsPraisedThe four LED lights are described as clear and handy for checking power.
BuildPraisedThe scratch-resistant shell is said to hold up well in bags and daily carry.

About the Pocket Juice 20,000mAh Slim Pro Portable Power Bank

Stay charged wherever life takes you with the Pocket Juice 20,000mAh Slim Pro Portable Power Bank, a compact, high-capacity portable charger designed to keep your essential devices powered on the go. Featuring two USB-A output ports and a versatile USB-C input/output port, this rechargeable power bank provides flexible charging options for smartphones and other compatible USB-powered devices. The USB-C port lets you charge a connected device or recharge the power bank itself, while the slim, lightweight design makes it easy to carry during travel, commutes, workdays, and everyday activities. Built for convenience and reliability, the Pocket Juice Slim Pro delivers multiple smartphone charges from a single full charge, helping you stay connected when a wall outlet isn't available. Four LED battery indicators make it easy to check the remaining power level, while the durable, scratch-resistant exterior helps protect the charger during everyday use. With both USB-C and Micro-USB recharging options, three device-charging outputs, and an included Micro-USB charging cable, this portable phone charger offers a practical backup power solution for life on the move.