10 Best Fastest Portable Charger 2025 in the United States

The Charmast Portable Charger is a compact and versatile option for anyone needing to keep their devices charged while on the go. With a capacity of 10,000mAh, it provides ample power to recharge most smartphones multiple times. One of its standout features is the built-in cables, which eliminate the need to carry multiple charging cords. This is particularly handy for users with different devices, as it includes cables for iPhone, USB Type-C, and Micro USB. The slim profile (5.68''x2.63''x0.69'' and only 0.55lb) makes it easy to slip into a bag, making it a great travel companion.

The charger has six outputs, allowing up to six devices to be charged simultaneously, which is ideal for families or groups who need to keep several gadgets powered up. The presence of three input options adds convenience, letting users recharge the power bank through various methods. The digital LED display is a useful touch, providing an accurate percentage of remaining battery life, so you know when to recharge.

The 3A charging speed is not the fastest available on the market; those looking for ultra-fast charging may find it a bit lacking. Additionally, with a capacity of 10,000mAh, it may not suffice for heavy users who require more power for high-drain devices or extended trips without access to power. The Charmast Portable Charger is an excellent choice for casual users who need a reliable and portable solution to keep their devices powered.

The INIU Portable Charger is a strong candidate in the fast portable charger category, designed with travelers and daily users in mind. With a 10,000mAh capacity, it offers ample power to recharge devices multiple times, such as giving an iPhone 8 nearly 4 full charges. One big advantage is its slim design, measuring just 0.5 inches thick, which makes it incredibly easy to slip into pockets or bags without adding bulk. Additionally, it features a USB-C port that supports both input and output, allowing you to charge your devices faster and with fewer cables, as many competitors only provide USB-C for input.

Charging speed is another highlight, with a 3A output that promises to charge compatible devices significantly faster than standard 2.1A chargers—up to 78% for an iPhone in just an hour. This can be a game-changer for users who need a quick power boost on the go. Furthermore, the 15-Layer SmartProtect system enhances safety by preventing overheating and potential battery damage, adding an extra layer of security to your charging experience.

There are some drawbacks to consider. While the charger’s size is impressive, the 10,000mAh capacity might be limiting for heavy users who rely on extensive charging throughout the day or during long trips. Additionally, although the charger is lightweight at only 7 ounces, it may still feel slightly heavier compared to smaller capacity chargers. Lastly, while the provided USB-C cable is a nice touch, having only two output ports could be a limitation for users needing to charge multiple devices simultaneously.

The Anker 737 Power Bank is a robust portable charger ideal for those needing reliable and fast charging on the go. With a substantial 24,000mAh capacity, it can charge an iPhone 13 nearly five times and a 2021 iPad Pro 12.9" 1.3 times, making it a great companion for long trips or heavy device usage. The power bank supports 140W output power, leveraging Power Delivery 3.1 technology, which translates into rapid charging for various devices, including laptops, smartphones, and tablets.

Its three ports include multiple USB Type C and USB Type A connectors, allowing you to charge multiple devices simultaneously. The smart digital display is a convenient feature, providing real-time information on output/input power and recharge time, keeping you informed about the charging process. Despite its strong capacity, the power bank is relatively compact, comparable in size to a 12 oz. soda can, and weighs 1.4 pounds, making it portable and manageable for travel.

Additionally, it complies with airline carry-on regulations, ensuring you can take it on flights without any issues. However, the power bank's weight might be a concern for some users who prioritize ultra-lightweight devices. Plus, while it's packed with advanced features, its price point might be higher compared to simpler models. This power bank is especially suitable for tech enthusiasts, frequent travelers, or anyone needing a powerful and fast-charging solution for multiple devices. With a 24-month warranty, the Anker 737 Power Bank stands out as a reliable and efficient choice in the fast portable charger category.