Choosing the best USB charger cube could mean the difference between a partial charge and a full charge every time. A reliable USB charger cube comes in handy to power your devices exactly when needed. Our evaluation focused on output (amps, watts, and volts), number of ports, size/dimensions, and auxiliary features such as battery indicators. This is an essential tool for anyone that wants a top-rated portable charger.
After more than 16 hours of research and testing, our pick for best USB charger cube goes to the Amoner USB Charger Cube. It is an absolute workhorse, carrying 15 watts of power (2 amps per port), a slim profile, and Smart IC technology that optimizes current depending on the device being charged. 100-240 volt input is also very handy to power up in most countries. Keep reading to learn more about other high-grade USB charger cubes available for purchase.
Top 7 Best USB Charger Cubes
#1 Amoner USB Charger Cube
Award: TOP PICK
WHY WE LIKE IT: This USB charger cube comes with 15 watts of power and three charging ports, allowing you to charge multiple devices at the same time, with excellent over-voltage protection built-in.
- Smart IC technology optimizes charging speed based on device
- Excellent short-circuiting and over-voltage protection
- Only covers one outlet (1.69″ by 1.77″ by 0.82″)
- USB ports aren’t deep; may appear “untidy”
- The charger may get hot if powering two devices at a time
- No foldable plug to save space when stored
This best USB charging hub delivers 15 watts for a maximum output current up to 2A per port. 2 amps have enough juice to power one iPad tablet very quickly to a full charge. 100-240 volt input also makes it usable in all countries. We love it to power a wide range of devices from smaller iPhone XR’s to e-book readers, Nintendo Switch’, and digital cameras. With Smart IC technology, it also automatically optimizes output current to the powered device.
We love this USB charger cube’s compact size (only 1.69″ by 1.77″ by 0.82″) which rests horizontally across a single outlet, helping to preserve valuable outlet space. This is critical, especially in smaller and more cluttered workstations that could use some tidiness. All in all, we were very impressed with its overall build quality. For another charging option, you should also read our guide to the best QI wireless chargers.
#2 Ailkin USB Charger Cube
Award: HONORABLE MENTION
WHY WE LIKE IT: With a total 5V/3.1A input and 100-240V compatibility, we like this inexpensive USB charger for those on a budget who need to charge common devices such as iPhones and tablets.
- Best on a budget
- Short circuit and over-voltage protection
- Compact size (1.8″ by 1.5″ by 1.2″)
- Slight humming noise when plugged in
- Gets a little hot when powering multiple devices
Three USB charging ports allow you to charge up to three devices simultaneously. Its “smart charge” detection automatically identifies and charges devices based on recommended output with a full speed of up to 3.1 amps. 3 amps are good enough to charge one tablet and one phone or three phones at the same time to a speedy and efficient full charge without losing patience.
We like this USB charger cube to power a wide range of devices including smartphones and cameras. This USB charger cube also complies with electrical standards such as overshoot, short circuit, and over-voltage protection to protect your devices, especially during a power surge. Kudos for a compact size (1.8″ by 1.5″ by 1.2″) which fits a single outlet without covering another. While you’re on the go, you might be better off with one of the best portable chargers. You may also check out the best wireless charger if you do not want to meddle with wires.
#3 X-Edition USB Charger Cube
Award: BEST FOR FAMILIES
WHY WE LIKE IT: This 5V, 2.1A USB charger cable comes in a four-pack with two ports each. It is a great choice for larger households with many rooms that could use “permanent” charging stations.
- Smart IC technology for device detection
- Strong 5V/2.1A output and dual USB ports
- Comes in a pack of four
- Small chirping sound when plugged in
- Comes out of some wall outlets easily; not as “snug” as others
We like this USB charger cube’s 5V/2.1A output. For perspective, an iPhone 8 could fully be charged in 1.8 hours and an iPad Mini 4 could complete a full charge in 3.5 hours. Plus, it also uses Smart IC technology which automatically assigns the most effective current depending on the device you are charging.
This USB charger cube is a short circuit, over-current, and over-voltage-proof, making it extremely safe to use. Dimensions are also very generous (2.1″ by 1.3″_ with a sturdy fireproof shell for durability. It is a nice fit in any backpack, laptop case, or purse to take anywhere you need power. This will be perfect for charging your best smartphone.
#4 GiGreen USB Charger Cube
Award: MOST COMPACT
WHY WE LIKE IT: This 5V, 1A USB charger cube comes in a five-pack and a compact,single-port design, preferable for people who only have one or two devices to charge regularly.
- Universal use in almost any country
- Overheating and over-voltage protection
- Fireproof shell for outstanding durability and impact-resistance
- Only one port
- May not fit snugly into some wall sockets
These USB charger cubes offer DC 5V/1A, enough power to charge all popular devices, including Chromebooks, Pixels, and iPhone X’s. A 100-240V voltage makes these plug usable in almost every country. Plus, it is small enough (3.6″ by 3.2″ by 3.2″) to fit in a single outlet without blocking a second. Our only knock is that it has only one port, while many available models have dual or triple ports.
Like all of our picks, all protections are in place, including over-voltage, over-current, and overheating. A rugged outer shell can take a little punishment, perfect for stowing away in a purse or backpack for a quick charge. With this charger, your best Android phone will always be charged. Combining this with a Lightning phone charger cable makes a great pair to charge your phone anytime you need it.
#5 FiveBox USB Charger Cube
Award: BEST FOR TRAVEL
WHY WE LIKE IT: This 2.1A USB charger cube comes in a two-pack with dual ports and 100-240V compatibility, making it a great choice for iPhone and iPad charging while traveling to most countries.
- 100 to 240V compatible for international sockets
- Includes dual USB ports for convenience
- Overheat, short circuit, and over-voltage protection
- Relatively lower charging speed (1A per port) when using two ports
We love this USB charger cube for powering all kinds of devices, including all iPhones, Samsung Galaxy, and even e-book readers. Dual USB ports share 5V and 2.1A. For perspective, an iPad charge brick is rated at 2.1 amps and a regular iPhone charger uses 1 amp as standard. PowerSmart IC technology also optimizes current based on the device being charged.
These USB charger cubes also come with dual ports, which makes it easy to charge two devices at a time. Along with 100-240V compatibility, it also works in most countries, making it good for stowing away in a suitcase. This will be the perfect way to keep your best iPhone charged and ready to go.
#6 Xcentz USB Charger Cube
Award: MOST VERSATILE
WHY WE LIKE IT: This USB wall charger comes with a whopping five charging ports, making it a must for business travelers who have more than two devices to power up at a time.
- Great square tabletop design for sharing
- Smart IC technology to optimize charging speed based on device
- Includes Quick Charge 3.0 for lightning-fast charging
- May be too heavy for backpack stowaway
- Could use some form of built-in cable management
We love this USB charging cube’s versatility. It uses a single Quick Charge 3.0, one Type C port (5V/3A), and three standard USB ports (2.4A). Its Quick Charge 3.0 port can power devices up to four times faster than standard USB ports by auto-adjusting to ideal voltage levels, with a larger range of voltages from 2.6V to 20V that apply based on the device charged. The maximum output is 48W and 9A which blows past most on our list.
This best multiport USB wall charger can power a large iPad Pro or USB C device in as little as 3 hours. Kudos for including LED lights to show usage and a sturdy cubed design that can be easily used as a permanent power station next to your desk.
Related: Be sure to also take a look at the best d batteries to power all kinds of devices.
#7 Embink USB Charger Cube
Award: SAFEST OPTION
WHY WE LIKE IT: This USB charger cube comes with IC board protection and a fireproof shell, making it an excellent choice for people who want to prioritize full over-voltage and overheating protection.
- Very sturdy, fireproof shell
- Short circuit, over-voltage, and overheating protection
- Comes in a three-pack
- Not Smart IC-technology compatible
This USB charger cube carries a 2.1A/5V for a total of 10.5 watts, which provides enough juice to power iPhones, Samsung Galaxy Tabs, iPads, and all popular mainstream devices. We also love the fact it comes in a three-pack, where it is always great to keep extra ones handy or placed in outlets throughout the house.
Like all picks on our list, this USB charger cube carries short-circuit, over-voltage, and overheating protection to prevent accidental fires and other electrical hazards. Its plastic outer shell is durable and fire-proof, more than sturdy enough to withstand heavy wear and tear.
How We Decided
In determining the best USB charger cube to buy, we explored output (amps, watts, and volts), number of ports, size/dimensions, and auxiliary features such as battery indicators.
Our recommended output is 5V/2.4A for dual-port chargers, which we feel offer enough charging speed to not run out of patience. This max charging speed also applies to devices that could control the amount of amperage based on the type of device that is charging.
The Xcentz USB Charger Cube has the fastest output on our list, using Quick Charge 3.0 which runs at 3 amps. Non-compatible Quick Charge devices run with a maximum output of 2.4 amps.
The number of ports is very important. Most of our picks carry two or three ports, which work well for people that regularly charge two or three devices on rotation. Single-port USB cables are best for users who have no more than two devices or who are looking to complete wireless charging capabilities devices like desk mats.
Size/dimensions is a consideration. Our picks generally fit in the 3.6″ by 3.2″ by 3.2″ range, which is good enough to cover a single wall outlet without obstructing others. Our only exception is the Xcentz USB Charger Cube, which has five charging ports. Its larger boxy-like design makes it a nice fit as a “permanent” charging station next to your office desk.
Best USB Charger Cube Buyer’s Guide
The Most Important Features to Consider
- Output
Our recommended minimum power output for a two-port wall charger is a 5V/2.0A, which is the most common standard charging speed for most charging products. Amps, which are used to measure electric current, vary in terms of recommendation depending on the type and number of devices charged to acceptable speeds. One amp is good for one phone, two amps are standard for one tablet/two phones, and three amps or greater works well with one tablet/one phone or three phones. On the side of the amps, standard charging speeds go up to 2.4 amps before graduating to 3.0 amps using Quick Charge 3.0 technology. Our strongest USB charger cube is the Xcentz USB Charger Cube. This best fast charger runs can charge most iPhones to within 80 percent in under 40 minutes. - Number of Ports
Our preference is for USB charger cubes with dual and triple ports, which we feel is acceptable for people that charge two or three devices on rotation regularly. For workstations, we love the Xcentz USB Charger Cube, which has five charging ports – a single Quick Charge 3.0, one Type C port ( 5V/3Amps.), and three standard USB ports. - Size and Dimensions
We recommend USB charger cubes that take up the least wall space possible. A single plug should not obstruct a second outlet.
