VIYISI G1212 10,000mAh Power Bank with Built-In Cables

Power Bank: VIYISI G1212 is a slim 10,000mAh portable charger promoted with two built-in cables, a digital display and fast charging. Its compact listed dimensions and integrated leads suit travel and everyday top-ups, though the listing gives conflicting details about the number of outputs and charging performance.

At a glance

Two built-in cables are advertised as Lightning and USB-C, reducing the need to pack separate charging leads.
The listing describes a digital display, pass-through charging and a slim form factor.
The stated 10,000mAh capacity is intended for portable backup charging, with the listing naming phones and other USB-C devices as compatible.

Price

$21.98Save 27%

Reference price: ~~$29.99~~

Price checked: Nov 14, 2026

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Pros and cons

Pros

Built-in Lightning and USB-C cables can simplify carrying a charger for a mix of older Apple and USB-C devices.
Compact listed dimensions and a 176 g listed weight make it a practical format for travel bags or pockets.
Pass-through charging is claimed, allowing the bank and a connected device to charge together.

Cons

A 10,000mAh bank is a portable top-up option rather than a substitute for a larger-capacity power source on extended trips.

Technical specifications

15 specifications

Identity
Brand	VIYISI
Model	G1212
Color	Black

Power and battery
Capacity	10000 milliamp_hours
Battery cell type	Lithium Polymer
Power configuration	Corded Electric
Voltage	5 volts
Amperage	3 A
Maximum output power	20 Wx 4
Battery charge time	3 hours
Rapid charging claim	50% in 30 mins

Connections and features
Connector type	USB Type C
Number of ports	2

Dimensions and weight
Dimensions listed	4.96 x 2.93 x 0.6 inches
Weight listed	176 g

What to know before buying

Listing details to confirm

The listing is inconsistent about outputs and charging specifications. Its details table says 2 ports and 3 A, while feature text claims charging up to 4 devices simultaneously, 20W PD output and 18W USB-C input. It also gives thickness as both 0.6 and 0.61 inches, and recharge time as 3 hours without specifying conditions. Confirm the selected version's connections and charging rates before relying on those figures. The stated 50%-70% usable-capacity estimate is a listing claim, not a guaranteed number of device charges.

Who is it for?

A good fit for

Travelers who want a compact backup battery with built-in Lightning and USB-C leads.
People charging compatible phones or small USB-C devices who value a digital display and pass-through charging.

Less suited to

Buyers who need a confirmed multi-device output count or a clearly specified charging rate before purchase.
People needing a high-capacity bank for prolonged off-grid use.

VIYISI G1212 10,000mAh Power Bank with Built-In Cables · photo 2 — Additional product photo 2

Customer reviews on Amazon

4.6 / 5 · 58 ratings

5 stars83%83%
4 stars8%8%
3 stars0%0%
2 stars5%5%
1 star4%4%

Customer feedback highlights perceived fast charging, compact size and travel convenience, with customers also mentioning the built-in Lightning and USB-C cords, display, light weight and compatibility across devices. These impressions fit the listed portable 10,000mAh format, but they do not resolve the conflicting output and charging-rate claims. Ratings are mostly five-star, with a smaller low-rating share, and the available rating data does not explain the reasons behind either view.

Positive themes

Customers mention charging speed and compact size as useful qualities.
Feedback notes the built-in Lightning and USB-C cords, digital display and portability.
Customers describe the charger as versatile across older Apple devices and other USB-C peripherals.

Frequently asked questions

What capacity does the VIYISI G1212 list?

The specifications list a capacity of 10000 milliamp_hours. The listing estimates that 50%-70% of that capacity may be delivered to other devices, so actual device charges depend on conversion losses and use.

Which cables are built in?

The feature description claims one Lightning cable and one USB-C cable. The details table separately lists USB Type C as the connector type, so verify the cable arrangement on the selected listing if it is essential.

Can it charge devices while the power bank is recharging?

Pass-through charging is claimed in the listing, but operating performance is not independently verified.

How many devices can it charge at once?

The details table lists 2 ports, while feature text claims up to 4 devices at once using the built-in leads and USB-A and USB-C ports. The stated configurations conflict, so confirm the number of usable outputs before buying.