5 keychain chargers that will save you from a dead phone battery

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The last thing you want to deal with on the go is a phone battery that’s about to die. If you’re walking around in the middle of nowhere, you won’t find an outlet, which means you need portable, reliable power. There are plenty of cheap power banks that users swear by that might help here, but this is also the circumstance where a keychain charger can definitely save the day; after all, unless you’re leaving the house in a very rush, you probably have your keys with you, which means you have a charger ready for action.

You can find a variety of compact chargers, each with a sturdy metal key ring that you can attach to your car or house keys, to ensure it’s always within reach. Depending on the model, you can use these devices to charge not only your smartphone, but also other devices like smartwatches and tablets. Amazon is a good place to look for these types of chargers, with several models priced under $50 for a generally affordable price and user ratings of at least 4 out of 5 stars to ensure consistent quality.

If a charger that you can attach to your keys is the name of the game, size is an understandable consideration. If it’s too big, it becomes less of a keychain and more of a charger that you chain keys to. For a smaller keychain charger, there’s the Iniu SnapGo Portable Charger, available on Amazon for $24.99.

This little guy measures only a few inches in diameter and weighs about a quarter of a pound. It features a simple, compact design, including a metal keyring to attach your keys, a front charger for smartwatches, and a built-in braided USB-C cable that plugs directly into compatible phones and other devices, like an AirPods charging case. It has a 5,000mAh, 20W battery that provides enough power to charge an iPhone 17 Pro from 20% to 57% in about 30 minutes.

Amazon shoppers gave this particular charger a 4.5 out of 5, liking its small size and reliable charging efficiency. It’s also TSA approved and at less than $50, it’s a clear draw. One user’s only notable complaint is that it’s a bit difficult to charge a smartwatch with the cord, requiring manual powering after plugging it in.

The best portable chargers are those that can charge multiple types of devices simultaneously. After all, you never know what might need a quick boost in power when you’re on the move. The Chaligti Portable Charger offers a good amount of that extra utility and it’s available on Amazon for $32.99.

This charger includes a pair of deployable cords, one USB-C and the other Apple compatible, as well as additional input ports and a smartwatch charger on the front, allowing you to plug in and charge multiple devices of different types at the same time. The current battery capacity is displayed on the front LED meter, which also lets you know when power comes and goes. You can attach it to your keys or bag with the aircraft-grade alloy key ring, which attaches to a thick strap.

Amazon and its buyers love this keychain charger, with the former providing an Amazon’s Choice badge and the latter giving a collective rating of 4.5 out of 5. In addition to its sturdy keychain and charging capacity, several users have complimented the charger’s color range, making it a nice addition to bags.

In addition to being small and efficient for charging, you hope to get from any portable charger, keychain or otherwise, general charging safety, including protection against power surges or overheating, among other concerns. If you want a keychain charger that has a little something extra in the defense department, there’s the Citicr Portable Charger, available on Amazon for $39.99.

Similar to its contemporaries, this charger includes built-in Apple and USB-C charging cables, output ports, and a magnetic charger for smartwatches. It also has an alloy key ring and a leather strap that you can use to attach to your keys or bag. This charger stands out with its safety features, including a six-layer protective framework that protects against over-current, over-voltage, short circuit, overheating, over-discharge, and battery swelling.

This Amazon’s Choice portable charger earned a 4.3 out of 5 rating from shoppers, with one user going so far as to call it their favorite charger of all time. They loved the speed and power of the charger as well as its cute design, while cautioning that the built-in cables can become harder to hold in place over time.

If you’re not sure what you want from a portable charger, the smart option would probably be to get a device that has a little bit of everything. The Rorry CharmGo Portable Charger has most of the same features as previous devices and it’s available on Amazon for $29.99.

With its built-in cables, ports, and charger, this charger can simultaneously power Apple and Android devices, smartwatches, and other accessories from its 5,000 mAh battery, which is protected against power surges, overheating, and short circuits, among other potential issues. It can hang on your keys, bag, or belt loop via its key ring and strap, and it comes in 16 different colors so you can coordinate it with your personal style.

This device is an exceptionally popular choice, with a 4.4 out of 5 rating from Amazon users, in addition to its Amazon’s Choice badge. Users consider it a reliable choice, with a user keeping it on hand for the duration of a trip around Las Vegas. Another user warns, however, that powering up a phone completely, from 30% to full, can almost drain the charger’s battery.

While a portable charger aims to provide enough power while remaining portable, depending on your personal use case, you may need a little more capacity and features than an average keychain charger can offer. For a heartier option, there’s the Rorry Flow Portable Charger, available on Amazon for $42.99.

This keychain charger is a little beefier than its contemporaries, although it still has a keyring so you can clip it to your bag or keys. In exchange for its larger size, it has a hefty 10,000mAh, 40W battery that can charge an iPhone 17 to 50% in just 20 minutes. It has a built-in USB-C charging cable, two output ports for additional devices, and a smartwatch pad on the side. It also has bendable prongs that you can plug into any standard outlet for fast charging, both for the charger itself and any devices plugged into it.

This larger, but still portable, charger has a rating of 4.6 out of 5, with one Amazon user calling it a “pint-sized powerhouse” for its fast charging speed and convenient foldable plug. Another user gave similar praise, although he wished it had an LED power display like the other devices.

If you’re considering trusting a device for a particular use case, like a portable keychain charger, you want to know you can rely on it well before that use case arises. To ensure quality, we focused on keychain chargers available on Amazon priced under $50 and with a user rating of at least 4 out of 5 stars. Preference was given to products that had a real keyring built into their construction, rather than a loose fabric strap.