AONIMI BY1-Green 5500mAh USB-C Power Bank

AONIMI BY1-Green is a compact 5500mAh power bank with a built-in USB-C connector and LCD battery indicator. It is intended as a pocketable backup for compatible USB-C phones, with the listing claiming about 0.9 charge for an iPhone 16.

At a glance

The built-in USB-C connector is designed to plug directly into compatible phones, avoiding a separate charging cable.
The LCD indicator is listed as showing the bank's remaining battery percentage.
The listing estimates about 0.9 charge for an iPhone 16, so this is positioned as a backup rather than a high-capacity multi-charge bank.
The seller claims the charger can recharge in about two to three hours, depending on the adapter.

Price

$17.94Save 10%

Reference price: ~~$19.95~~

Price checked: Nov 13, 2026

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Pros and cons

Pros

Pocket-size form and direct-plug connector are convenient for carrying and quick top-ups.
LCD battery percentage display makes remaining charge easier to check.
The listing claims compatibility with USB-C iPhones from the 15 series onward and various Android devices.

Cons

The stated 5500mAh capacity and estimated 0.9 iPhone 16 charge make it better suited to topping up than replacing a larger power bank for extended use.

Technical specifications

11 specifications

Identity
Brand	AONIMI
Model	BY1-Green

Display and video
Screen technology listed	LCD

Power and battery
Battery capacity	5500 milliamp_hours
Battery cell type	Lithium Polymer
Power configuration	Corded Electric
Voltage	5 volts
Connector	USB-C Connector
Number of ports	2

Dimensions and installation
Dimensions listed	3.2 x 2.06 x 1.06 inches

Features
Listed special features	Lightweight, Fast Charging, LCD Indicator Lights, Pocket Size

What to know before buying

The listing says cases under 4mm thick can remain on during charging. Thicker cases may need to be removed.
The listing estimates about 0.9 charge for an iPhone 16. Actual results may vary by phone and usage.

Listing details to confirm

The title and feature copy describe direct plug-in charging through a built-in USB-C connector, while the details also list two ports and a corded-electric power configuration. The dimensions differ between the detail table and feature copy, and the claimed 2–3-hour recharge time differs from the adapter-specific estimate of about 2 hours with 20W or 3 hours with 15W. Compatibility statements also conflict: some include iPhone 18 models, while another says iPhone 15/16/17/18 and USB-C devices, and the feature text excludes iPhone 14 and older. Confirm the selected model, connector arrangement and measurements before buying.

Who is it for?

A good fit for

People seeking a small, direct-plug USB-C backup for compatible newer iPhones or Android phones.
Travelers who prioritize a compact carry option and need occasional phone top-ups.

Less suited to

Buyers who need multiple full phone recharges from one bank.
Owners of iPhone 14 or older models, which the listing says are not compatible.

AONIMI BY1-Green 5500mAh USB-C Power Bank · photo 2 — Additional product photo 2

Customer reviews on Amazon

4.4 / 5 · 414 ratings

5 stars74%74%
4 stars13%13%
3 stars4%4%
2 stars4%4%
1 star5%5%

Customer feedback highlights compact size, portability and ease of use, which fit the direct-plug, pocket-oriented design. Reports on charging speed and reliability are mixed, including accounts of the unit stopping after one charge. Battery life is also mixed. That uncertainty matters for a 5500mAh backup with a claimed 0.9 iPhone 16 charge, especially if you depend on it during a long day or trip.

Positive themes

Customers appreciate the compact size and portability, especially for travel.
Customers describe it as convenient and easy to use.

Mixed feedback

Charging speed and reliability receive mixed feedback, including reports of the bank stopping after one charge.
Battery-life feedback is mixed, with some finding it lasts well and others wanting more.

Frequently asked questions

Which phones does the listing say this charger supports?

It names USB-C iPhones from the 15 series onward and several Android brands. The compatibility wording is inconsistent about iPhone 18 models, and it explicitly excludes iPhone 14 and older, so confirm your exact phone before buying.

How much charge can it provide?

The listing claims about 0.9 charge for an iPhone 16. That is a stated estimate, not a guaranteed result for every phone or usage pattern.

How long does recharging the power bank take?

The listing gives estimates of about 2–3 hours generally, and about 2 hours with a 20W charger or 3 hours with a 15W charger. It does not establish one fixed recharge time.

Can it charge through a phone case?

The listing says it can charge through cases thinner than 4mm. It recommends removing thicker cases.