iWALK Small Portable Charger 13500mAh - Slim 2-in-1 Power Bank

In this review of the iWALK Small Portable Charger 13500mAh, the bottom line is simple: this is a compact, practical power bank for people who need both high capacity and a truly portable extra battery. The unit's standout feature is the clever 2-in-1 design that separates into a 4500mAh mini charger and a 9000mAh charging case, letting users share power or charge two devices at once. For travelers, commuters, or anyone who dislikes carrying a large brick, this charger balances capacity with size and adds a clear LED readout to track remaining power.

Key Features

• 13500mAh total capacity: Provides days of standby and multiple top-ups for phones, combining 9000mAh in the main pack with a detachable 4500mAh mini charger for flexibility.
• Slim, pocketable design: At roughly two thirds the length of a phone, it easily slips into a bag or pocket without the bulk of traditional high-capacity bricks.
• 2-in-1 detachable charger: The mini portable charger magnetically detaches so a second person can use it or you can power two devices separately.
• PD 20W fast charging: The USB-C port supports bidirectional PD charging, delivering up to 20W out and accepting up to 18W in for quick top-ups.
• Multiple outputs and LED display: USB-A plus USB-C IN/OUT and a digital LED power display make it easy to see remaining charge and support a wide range of devices.
• Wide compatibility: Built-in type C on the mini charger and standard ports support iPhone 15/16 series, iPad, AirPods and most USB-C phones like Samsung and Google Pixel.

Who It's For

This charger is ideal for frequent travelers, day trippers and commuters who want higher capacity without a bulky unit, and for couples or friends who sometimes need to share a charger. Its detachable 4500mAh module is especially handy when two devices need quick emergency power.

Less suited for users who need ultra-fast multi-device charging at the same time from multiple high-watt sources or those who prefer wireless charging built into the bank; it is focused on compact wired convenience rather than replacing a full desktop charging hub.

Pros & Cons

Pros

• Detachable 4500mAh mini charger provides flexible sharing and on-the-go convenience.
• Compact form factor gives 13500mAh capacity without the usual bulk, easy to carry in a pocket or purse.
• PD 20W USB-C fast charging and a USB-A port cover common charging needs for phones and tablets.
• LED digital display clearly shows remaining power so you can plan recharges.

Cons

• While PD 20W is useful, it is not the fastest available for larger tablets or high-watt laptops.
• The detachable design adds moving parts that require care when carrying in tight bags or pockets.

Specifications

Total capacity	13500mAh (9000mAh + 4500mAh)
Mini charger capacity	4500mAh
Main battery capacity	9000mAh
USB-C	IN & OUT, PD 20W output, 18W input
USB-A	Output port for additional device
Compatibility	iPhone 15/16 series, iPad, AirPods, Samsung, Google Pixel and other USB-C devices
Included	Power bank (4500mAh mini + 9000mAh main), USB-C to C cable, user manual

Our Verdict

The iWALK 13500mAh Small Portable Charger is a smart choice for anyone who wants meaningful capacity in a compact package and the versatility to share power. Its detachable mini charger, clear LED display and PD 20W support make it practical for most phones and tablets while remaining highly portable, so it represents strong value for users who prioritize convenience over maximum wattage.

Frequently Asked Questions

Can the mini charger charge devices by itself?
Yes, the 4500mAh mini portable charger has a built-in Type-C interface and can charge phones like iPhone 15/16 and other USB-C devices on its own.

How fast will it charge an iPhone?
With PD 20W output on the USB-C port, it can charge recent iPhones quickly; for example, it can bring an iPhone 15 Pro to around 50% in roughly 30 minutes under ideal conditions.

What comes in the box?
The package includes the 13500mAh power bank (9000mAh main and 4500mAh mini), a USB-C to C cable and a user manual.