Ultima Boost 20K Ultra Max Power Bank Overview

The Ultima Boost 20K Ultra Max Power Bank is a high-performance option built for users who need serious power output along with large capacity. With a 20,000mAh battery and up to 100W output, it’s not just for phones—it’s designed to handle laptops, tablets, and multiple devices at once.

Design and Build

The Ultima Boost 20K Ultra Max stands out with its premium aluminum body, giving it a more durable and high-end feel compared to standard plastic powerbanks. Despite the large capacity, it maintains a slim and travel-friendly design, making it easy to carry in a backpack.

An LED digital display provides accurate battery percentage, so you always know how much power is left.

Performance and Charging

This powerbank is all about power. It delivers up to 100W output via USB-C, making it capable of charging laptops, gaming devices, and high-end smartphones.

It also supports a wide range of fast-charging protocols like PD, PPS, QC 3.0, VOOC, WARP, and SFS, ensuring compatibility with almost any modern device.

On the input side, it supports up to 65W charging, allowing the powerbank itself to recharge relatively quickly for its size.

Battery and Efficiency

With a 20,000mAh capacity (rated 13,500mAh output), it can charge smartphones multiple times or provide a significant boost to laptops and tablets.

When using a 65W PD charger, it takes around 6.5 hours to fully recharge, which is quite fast for a powerbank of this capacity.

Connectivity and Usability

The Ultima Boost 20K Ultra Max includes:

1× USB-C port (input/output, up to 100W)
2× USB-A output ports

It supports simultaneous charging of up to 3 devices, making it ideal for users with multiple gadgets.

This makes it a great choice for travelers, professionals, and gamers who carry several devices at once.

Safety and Protection

Safety is a major focus, with 12-layer smart IC protection, guarding against overcharging, overheating, short circuits, and overcurrent.

It also operates reliably within a wide temperature range (-10°C to 55°C).