USB Type C allows for power negotiation, up to 5A at 20V, giving you your 100 watts. This was quite correct at the time that it was written (USB PD v1.x), however in USB-PD v2.0 & v3.0 ‘Power Profiles’ have been deprecated and replaced with ‘Power Rules’. Stack Exchange network consists of 176 Q&A communities including Stack Overflow, the largest, most trusted online community for developers to learn, share their knowledge, and build their careers. It also uses a different variable voltage selection and negotiation protocol than USB PD, which Qualcomm advertises as better/safer for its own SoCs. Qualcomm’s Snapdragon SoCs are used in many popular smartphones and tablets. It’s fast-charging standard, Quick Charge, has been through multiple iterations. Fast-charging an iPhone requires the use of a USB-C to Lightning cable, which, until February 2019, needed Apple’s OEM MKQ42AM/A or MD818ZM/A USB-C to Lightning cables. Unfortunately, they’re a tad expensive at around $19 to $35 from various online retailers such as Amazon. It scales up from smartphones to notebook computers, provided they use a USB-C connector and a USB-C power controller on the client and host.
Odds are, you probably have multiple gadgets that need recharging. Why not charge them all simultaneously with this nifty adapter from Anker? It pushes out 43.5 watts of power — that’s three times more than the brick that was likely included with your iPhone. We compared 40 different USB wall chargers to compile this list of the best third-party and multi-port offerings available right now. The very small USB port found on many non-Apple cellphones, tablets and other portable devices is a Micro USB socket. Considerably smaller than USB Type A and B, Micro USB is also half the thickness of Mini USB . Micro USB has been superseded by USB Type C on many new products.
In our tests, one of the power profiles was an unusual 12 V, 1.75 A , which didn’t match the 12 V, 1.5 A specs listed on the charger itself. If you don’t want to spend more than $10 or so on a charger and aren’t concerned about USB-C speeds, we recommend ZMI’s PowerCruise C2 36-Watt Dual USB Car Charger with QC 3.0. To be fair, any dual-port USB-A charger from a reputable brand will work as well as any other. But the PowerCruise C2 has a slight edge because it’s the rare charger that supports Qualcomm’s Quick Charge 3.0 charging technology on both ports , and it has the most aesthetically pleasing design in the category. The Nekteck PD 45W car charger is the only model we tested that includes a USB-C–to–USB-C cable, a $10 to $20 value if bought separately. You can keep this cable in your car to charge your Android phone, computer, or iPad Pro without having to buy a separate accessory. We’ve verified that the cable adheres to standards; it’s not only safe, but it also has a sturdy build quality. In addition to passing our own tests, the Nekteck charger has been certified by the USB-IF, which means it has been independently tested for safety.
Your customers will appreciate finding an easy and safe place to charge their devices. With our different USB charging products, we can handle the widest variety of devices. Why I use a separate wall charger to protect the computer. Most of the USB chargers I have seen the LED just goes out when fully charged. You can choose a micro USB charger based on the length of its cable or purchase a separate one from eBay. You may wish to have a longer cable to accommodate a large area. Some common lengths you can get are two, five, or six feet. One of the more unusual models in our review, the Nekmit EL charger definitely has a more intriguing look.
Many are small and compact in order to be easily portable. A few others are large and intended to spend most of their time on a desk or counter top in order to create a designated charging station. Still others are intended for use in your car for charging on the go. Purchasing a charger with four ports when you have six devices will be counter productive because you still won’t be able to charge everything at once. If you don’t need one of those 60-watt or higher, heavy-hitting chargers, you can usually get by with spending considerably less. The Aukey PA-T16 is great for those with two devices that support Qualcomm QC 3.0, while its larger relative the Aukey PA-T11 is suitable for those with several such devices.
Although the ports can be used simultaneously, it can be difficult to put all of them to use, especially if you have USB cables that vary in size. More specifically, each USB port is located a bit too close to each other. So, if you intend using all of them at once, it can take some time to fit the USB connectors adjacent to each other. With this convenient device, you will have a true peace of mind since it has one of the best protection systems available on the market. On top of that, it can charge all of your gadgets faster than a regular adapter. One of the smallest devices on the market and also one of the most versatile ones.
USB connector types multiplied as the specification progressed. The original USB specification detailed standard-A and standard-B plugs and receptacles. The connectors were different so that users could not connect one computer receptacle to another. The data pins in the standard plugs are recessed compared to the power pins so that the device can power up before establishing a data connection. Some devices operate in different modes depending on whether the data connection is made. Charging docks supply power and do not include a host device or data pins, allowing any capable USB device to charge or operate from a standard USB cable. In a charge-only cable, the data wires are shorted at the device end, otherwise, the device may reject the charger as unsuitable. The device combines multiple power output ports and may become a true life savior for all of your gadgets. Finally, many multiple USB chargers operate similarly to the average surge protector. They protect your devices from unexpected power surges and prevent them from being damaged using overcharge protection.
To find the best of the best, we researched user ratings and professional reviews alike, searching for units that stand out in such a crowded field. Each unit we selected for testing is unique from the others, offering a feature you can’t get elsewhere. While it doesn’t support Qualcomm Quick Charge, it does feature Anker’s proprietary PowerIQ and VoltageBoost tech—features that give this sleek unit enough oomph to charge two iPads at the same time. Small, mighty, and a consistent performer, the Anker is a good choice, especially at a price that’s competitive with more basic chargers. If your needs range from phones, to phablets, and even to full-size tablets, this Anker has got you covered. When the weather may be suitable for flying, I bring my batteries to the office and charge them in the office. This charger works, but neither does it balance very well nor is the cut-off voltage ideal.
Rev 1.1 finally adds much needed uniformity to what was previously an ad hoc charging activity. The adoption of BC1.1 should lead to reduced cost for manufacturers and consumers, and greater interoperability as standard adapters emerge. Nevertheless, the USB guidelines only cover how power is to be taken from the port; they still leave power-management architectures and charging specifics open to interpretation. That is where Maxim’s broad spectrum of charging devices becomes important, as they can help speed the design of safe and reliable battery chargers for nearly any USB-connected portable device. Figure 12 shows a small portable device that is powered from one AA NiMH cell and charges from USB. The DS2710 charger switches at approximately 150kHz and charges the battery at 1.1A (about 0.5°C for a typical AA NiMH cell). The circuit gets more current into the battery (1.1A) than is gets from the USB port because a step-down ratio converts 5V at 500mA, to 1.5V at 1.1A at the battery. It should be noted that charging can occur only with 500mA or greater ports, since proper charge termination cannot be assured at low charge rates.
A portable design has choices about how to mange port detection. It can be compliant with BC1.1, compliant only with USB 2.0, or noncompliant. If fully compliant with BC1.1, it must be able to sense and limit input current for all USB source types, including legacy USB 1 and 2.0 ports. If compliant with 2.0, it will charge from SDPs after enumeration, but may not recognize CDPs and DCPs. If it cannot recognize a CDP, it can still charge and remain compliant but only after enumeration, in the same way that it would with an SDP. Other partially compliant and noncompliant charging schemes will be discussed later. Charging batteries with USB requires balancing battery “care and feeding” with the power limitations of USB and the size and cost barriers ever present in portable consumer device designs. Add in that Satechi includes velcro for cable management, along with built-in docks for your devices, and this is a no-brainer. Each port is large enough to hold even the largest devices and is compatible with many varieties released in recent years. You would be hard-pressed to find a charging station that met all of your needs more than Satechi’s offering.
If your USB-C laptop charger isn’t working when by all rights it should be, check your settings to make sure it is set to receive power. Laptops that rely entirely on USB-C, meanwhile, might not charge with just any charger. PCWorld, in its testing, found that HP’s Spectre x2 wouldn’t charge with any USB-C charger besides its own. HP said that that was intentional because a bad charger could damage the device or cause it to malfunction. Other devices, like the Apple MacBook Pro, don’t have such tight restrictions — a new USB-C authentication system could help with this issue in the near future. The arrival of USB-C has been a game-changer for many electronics. You can use the connection to charge devices and transfer media, and it’s conveniently reversible.
But you can also be sure that, should the need arise, it will be right there ready to charge up your phone or GPS if you desperately need it. We finish up our marathon march through the best USB car chargers with this product from CHOETECH. This is the second style of charger we have come across on our list where the two USB Ports serve separate functions. On the other hand, remember what we said about the TrimDish product above, that the power cord was kind of the Achilles heel of USB chargers? Bearing that in mind, this product from AmazonBasics could be a very handy standby charger. Buy it – along with a more traditional design for everyday use – and pop this one in the glove box. To be perfectly blunt, there’s not really much about these products in terms of stand-out features. Yes, they do have wide compatibility across a range of electrical devices.