The best USB car chargers. Car USB charger with on-board network voltage and charging current indication

16.06.2019 Adviсe

After testing over 10 USB cables bought from Aliexpress (), I was wondering which phone charger is best?
By and large, all chargers are about the same and everyone charges smartphones or tablets, but some do it faster. It all depends on the quality of the components and the power scheme.

Let's say you have a device (for example, a 10,000 mAh Powerbank) that you use every day. In the evening, put the device on charge, but in the morning you find that the device is not fully charged.
This is normal if you have a bad PSU. If the PSU outputs 0.5A at the output, then it will take 2 hours at best to charge 1000mAh, and it will take 20 hours to charge 10A. This is the worst option.
But, thank God, such chargers are practically an exception (although, as the test will show, not quite!), But charges that give out 1A output are quite common, and it will take 10 hours to fully charge 10A, which is also not very good.
With a good 2.0A charge, you need 4 times less time in the first case and 2 times less time in the second case.

For testing it took:

usb best wire

USB charging:

I wanted to test about 5 more popular chargers, but they stuck in the mail and never arrived. Maybe I'll add them to the review a little later.
* Test each charge with a "normal" voltmeter / ammeter - no time. Approximate characteristics will be visible with the USB tester.
This review does not pretend to be true, but can only help you decide on the choice of purchase, as well as help save money when buying a USB charger in China (on Aliexpress).

4 USB travel

No Name charging for 4 USB ports - two with 1A output and two with 2.1A output. Charging is soundly assembled and despite the removable euro plug, it does not play.

Declared characteristics: 5.1V - 1A and 5.1V - 2.1A. The built-in blue LED cannot be turned off, but it does not shine very much.

Chuwi

I was very surprised and liked Chuwi charging:

Nice packaging, very good assembly, matte plastic. According to the characteristics they promise 5V - 2A.

Something similar to OnePlus One.

Nillkin

On the advice of users, of course, I purchased a charger from Nillkina. I hope that it will live longer than the USB wire ...

The manufacturer promises 5V -2A output. Charging has several quality certifications. Online verification goes well:

There are a couple of shortcomings that are immediately evident:
1) The case is made of glossy plastic, on which fingerprints remain
2) Chinese fork. A company as big as Nillkin could also take care of the euro version of the charger.
Update: A version with euro plug exists. The second flaw is removed ...

HTC TC E250

This charger was inherited from an old smartphone, but for some reason it charged smartphones very poorly. After testing, it will become clear why. Output: 5V - 1A.

iTechnology 3 Usb SG-TC06 charger

iTechnology is a charger from a Hong Kong company, unknown to me until today. Nice print and decent build, euro plug. I was interested in the fact that it has 3 USB outputs. One of the ports is marked 2.4A, the rest are 1A. Supplied in a plain white box with two usb wires.

iTecnology 4 Usb SG-TC09E

We can say that SG-TC09E is the older version of iTecnology SG-TC06 with 4 usb outputs. Two for 2.1A and two for 1.0A. Supplied in a separate box with two usb wires.
The manufacturer promises a total output power of 5.0V and 4.2A (2.1A + 2.1A + 1.0A + 1.0A).

The ends are perforated for improved ventilation.
There is only one complaint about the assembly. The fork backlashes a little, but it is not critical + it is treated. And so, in general, very good impressions left.

Jiayu-Travel Charger

Default charging Jiayu S3 with euro plug. Output characteristics: 5.0V - 1000mA

Lenovo C-P32

Standard charger supplied with the K900 smartphone. Declared characteristics 5.2V - 2.0A.

Meizu UP0520

Baby Meizu - charging from the kit from Meizu M1 Note. Small, well-assembled (although they did not blunder here). Declared characteristics 5V - 2A.

To avoid unnecessary wires, charging with a built-in power supply unit - DCF-4U was chosen. Looking ahead a little, this is the best stationary charger for your money for two or more usb outputs.

Packed very securely, delivered in a separate cardboard box. In addition to the charging itself, the box also contains a power cord with a Euro plug, as well as instructions in English.

It has 4 USB outputs: two for fast charging at 2100mA and two regular ones at 1000mA, 5V.
The only negative for me is a very bright LED that needs to be either painted over or turned off. Shines like a beacon.

One Plus

Charger included with 1+1. Good build quality. Gives out 5V -2A.

OEM #1 ETAOU10BE

OEM Chinese charging with two USB outputs. Similar chargers were sold by Sharegood for $1.5. The characteristics are indicated in Russian, although they are printed terribly.
They promise 5V -2A. Above each output is written: for Ipad or for GalaxyTab.

OEM #2 ETAOU10BE +MicroUSB cable

Charging with the mysterious name ETAOU10BE, with a built-in microUSB wire. Declared characteristics: 5V -0.7A.

OEM #3 Double USB AC Adapter

A small cubic charger with two usb ports for 1A and 2.1a. Available in two versions: Black and White. Characteristics: 5V - 2100mA.

OEM #4 DS96000

The cheapest charger on Aliexpress for 70 cents with delivery. Very thin + with euro plug. Promising output power: 5V-1A.

TCL WCN1A5V00-04

Charger supplied with the TCL S720 smartphone. A very interesting solution with a folding fork. The only negative is only 5V-1A at the output.

Ulefon

Complete charger that comes with the Ulefon Be Pro smartphone. Nice packaging, euro plug. Output power: 5V-1A.

Xiaomi MDY-03-EC

Charging from the Mi Pad kit. If not for the glossy body, we could say that this is a copy of Lenovo C-P32 Declared characteristics: 5V - 2A.

Yi A8-501000

Xiaoyi is a complete Xiaomi Yi camera charger. Output power: 5V - 1000mA.

Some test results were expected and predicted:

Charging produces reference 5.03V - 1.71A when 1 device is connected, 5.00V - 1.71A when two devices are connected, 4.97V-1.71A when three devices are connected.

An unexpected result surprised charging iTechnology 4 USB :

Charging gave out stable 5.11V - 1.71A with one, two, three connected devices. The same Orico sagged a little...

Charger iTechnology 3USB I was also pleasantly surprised, especially considering the price:

1 connected device 4.97V - 1.68A
2 connected devices 4.94V - 1.65A
3 connected devices 4.95V - 1.68A

During testing, the only negative was found: despite the excellent results, the charging did not make a very pleasant sound and demonstrated with all its “buzzing” that she did not have long to live. Pity, very pity.

The Chinese noname, despite the drawdown, when connecting several devices, in any case showed good results:

1 connected device 5.14V - 1.71A
2 connected devices 4.94V - 1.66A
3 connected devices 4.77V - 1.41A

I expected the worst from this charge, but in the end it copes well even with 2-3 connected devices.

NoName assembly:

OEM #4 DS96000: 4.45V - 0.45A - the quality is proportional to the amount paid. I hope someone reads this review before buying, and does not waste 70 cents 😉

OEM #3 Double USB AC Adapter :

Despite the marking at 2.1A, at one of the outputs, charging produces only 4.63V-1.01 A, and at the 1A output it produces 4.6V and 0.99A.

I don't recommend buying either. The seller returned the money for a fake product.

OEM #2 ETAOU10BE+MicroUSB the wire:

Another mystery of the Chinese industry: 4.46V and 0.48A. I definitely don't recommend buying.

OEM #1 ETAOU10BE Dual-port :

Dual-port charging showed a good result:

1 connected device 5.00V - 1.61A
2 connected devices 4.77V - 1.14A

Reference 5.00V and 1.61 A from such a baby took me by surprise. I didn’t think I didn’t think that I could squeeze so much out of myself, especially after the OEM #2 test. But you have to pay for everything.

Charging heats up incredibly (~ 60-70 degrees). It's a pity that the high temperature reduced to 0 impressions of charging. But then again ... Cheap does not mean high quality.

Middle-end charging :

Xiaomi :
I have already tested Xiaomi charging before, but still I repeat: 5.26V-1.71A. Very good charging, especially since it comes free with the tablet.
Lenovo C-P32 :
Lenovo charger has also participated in testing before. Xiaomi showed an identical result: 5.26V-1.71A.
Meizu Note :
And here was a real surprise. After the terrible build quality of the Meizu M1 Note, I assumed that the charging would be the same ... But no, the little Meizu showed the following result: 5.18V - 1.71A. What is most interesting is that the charge, of course, warmed up, but did not exceed 45-50 degrees.
Nillkin :
Charging from Nillkin: 5.09V-1.71A. Doesn't get hot when charging. An excellent choice for your money.
Chuwi :
I have never had the pleasure of testing this company's products before. Therefore, the result of testing this charge was of most interest.
Here is what the charging from Chewie showed: 5.20V and 1.71A.

TCL, HTC, Ulefon, Jiayu, XiaoYi

In short, all these charges underestimated the voltage, but in terms of Amperes, they correspond to the declared characteristics and even slightly exceed them:

TCL: 4.66V - 1.11A
Jiayu: 4.71V - 1.24A
Ulefon: 4.63V - 1.04A
Xiaoyi: 4.66V - 1.11A

About HTC. As mentioned earlier, charging practically did not charge the smartphone. In practice, charging is constantly turned on and off.

Showing at first 8.88V - 8.88A, and after a second delay it showed 5.11V and 0.45. And so in a circle. Naturally, in this way, the smartphone could not even charge overnight.

Due to the fact that the charges are not the same type (a different number of UBS outputs), it is quite difficult to choose a winner unanimously.
If we are talking about stationary home chargers, then I advise you to choose Orico or iTecnology. They are almost the same, although Orico is a well-known and time-tested company (+ there are chargers for every taste and color 3 USB output \ 4 USB output with or without PSU \ 5 USB, etc.).

From a portable segment with one USB output, I advise Nillkin Charger with two hands:

1. 100% counterfeit protection.
2. Euro plug.
3. Corresponds to the declared characteristics.

If you need more than one USB port, then take a look at 4 USB travel. Pretty good charger. Replaceable fork, good build quality.
Perhaps when the Vojo charger for two USB ports arrives, I will change my mind.

Of non-purchasable chargers: OnePlus=Lenovo+Xiaomi=Chuwi - they are all almost the same.

It’s hard to choose from the No Name segment (all charges are of dubious quality), then either:
a) Dual port
b) OEM #1 ETAOU10BE Dual-port with mandatory revision.

*Disclaimer: This test/review does not claim to be truth or professional testing.

A car charger is a very primitive device, consisting of only a few elements and capable of performing only one function: to recharge a smartphone from the cigarette lighter while the car engine is running. However, despite the simplicity of car charging for the phone, the choice of this accessory must also be approached very responsibly. A motorist using a low-quality memory runs the risk of being without means of communication at any time - if a charging failure occurs during a long trip, this will become a real problem for the driver.

First of all, the motorist must decide what he needs: complete car charger or USB adapter. The adapter is an adapter from the cigarette lighter to the USB cable.

The adapter has a significant drawback: it turns into a completely useless thing if the motorist has forgotten the USB cable at home. Therefore, when contacting a communication salon, the driver is recommended to take exactly a full-fledged memory - it costs only a little more than a USB adapter in retail.

When ordering from China, preference should, on the contrary, be given to a USB adapter. You can buy such a “trinket” for only 130 rubles.

Other criteria for the selection of AZU include the following:

Output current. Enough current to charge smartphones 1 A, but to recharge the tablets you will need 2 A- this was mentioned in an article on choosing network chargers. It is recommended to take the AZU, which gives out 2 A - With the help of such an accessory, a motorist will be able to recharge both a smartphone and a tablet. Worry about what the smartphone is from 2 A burn, it shouldn’t: modern gadgets are equipped with special charge controllers - devices that do not pass excess current.

Output voltage. There is such a rule: the voltage specified in the technical specifications of a car charger for a phone should not exceed the value indicated on the gadget's battery by more than 5%. Otherwise, the AZU will overheat and fail very soon.

Length and type of wire. Experts unanimously advise taking an AZU with a twisted wire. The likelihood that the twisted wire will break (and this can lead to fire) is extremely small. In addition, the twisted wire is adjustable in length - a very useful feature, considering how diverse the interior of modern cars is.

Wire attachment. It is worth making sure that a corrugated sheath is present at the place where the wire exits the adapter. Here is what is meant:

The corrugated sheath prevents the wire from breaking at the bends. The fastening of the wire to the plug must also be protected by it.

Number of ports. This criterion is relevant if the motorist chooses a USB adapter. Optimal number of ports - 2 : one with output current in 2.1 A, the second in 1 A. A wonderful and inexpensive car USB adapter with two ports from the company Remax sold on the marketplace gear best:

It is advisable to buy adapters with a large number of ports only for those motorists who are the heads of large families or simply large families. Otherwise, the driver will senselessly overpay for the accessory, because some of the ports will be idle.

Design. The driver should pay attention to the fact that there is no metal ring around the central contact of the AZU.

Since the charging case is made of plastic, sooner or later the metal ring will definitely fall off the thread and remain in the cigarette lighter of the car. A stuck part can close the contacts inside the cigarette lighter, and this is fraught with a fire. In fairness, it should be noted that AZU with metal rings are now on sale very rare, although earlier a significant part of the charges had just such a design.

A useful advantage in terms of design is the presence of an LED, thanks to which the driver can be sure that the ACS is working correctly. This is the version for sale AliExpress for just over 100 rubles:

Otherwise, with regard to design, the motorist should rely on his own opinion. He, for example, may prefer a battery charger with an LED display that informs about the degree of charge and voltage of the car's battery.

However, such an accessory will cost about three times more than a regular adapter.

What to buy: original or Chinese copy?

Buyers of expensive gadgets, as a rule, do not spare money for the best accessories - as long as nothing threatens their new mobile device. Such clients insist that they be provided with exactly original chargers, cables and USB adapters, because they believe that universal chargers can damage the battery of the device. But are they right?

More likely no than yes. If an iPhone 7 buyer asks to sell him an original AZU, the consultant will probably offer an accessory from the company Belkin- but not by Apple. By visiting the online store of the official Apple retailer in Russia Re:Store , the buyer will find in the catalog of accessories AZU companies Deppa, MOMAX, Juices- but again there is no Apple-made charger there.

On the website of the "apple" company, you will not be able to find the original either. In fact, this means that Apple is not engaged in the production of its own AZU. Belkin, of course, produces excellent accessories, but in relation to the iPhone, this company is still a third-party manufacturer.

Company Samsung on the official website it sells only AZU, which provides fast charging. Such an accessory costs more than 1.5 thousand rubles!

Other original AZU Samsung does not produce.

The user should not be limited to finding the original car charger for his gadget- if he finds one, then from its price his "eyes will climb on his forehead." Among the universal AZU (even if made in China) you can find a lot of safe and high-quality accessories that will turn out to be even more useful and effective than the originals. In the next section, we'll cover a few worthy options.

Review of the best car chargers for phones

Here are the AZU and USB adapters that motorists should pay attention to:

Anker Power Drive 2. Charger power drive 2 from Anker boasts, first of all, of being equipped with a system Menas MultiProtect that protects the accessory from overheating and overvoltage. The driver does not have to worry about a possible fire and feel the charge with his hand every minute.

Technology is also interesting. IQ power. Thanks to this technology, CAM from Anker recognizes the device and provides exactly such a current strength so that charging is as fast as possible, but does not harm the gadget's battery. The accessory has a very concise appearance, is easy to use and is equipped with a small LED, which provides additional convenience. AZU cost from Anker- about 600 rubles.

Aukey CC-T1. This option is recommended for motorists who own smartphones that support fast charging technology - for example, Samsung Galaxy S7 or YotaPhone 2. Aukey has 2 ports: one standard, the second Quick charge.

It is permissible to recharge both a smartphone and a tablet using a standard port - the output current strength is 2.4 A. The adapter comes with a branded USB cable with a Micro-USB plug. The cost of the whole set is about 1 thousand rubles.

1byone. Charger 1byone- a great option for those who need a lot of ports and who do not want to pay a huge amount for it. The adapter has 3 USB ports, each of which provides output current in 2.4 A.

AZU 1byone it is also noteworthy that it is equipped with a special IC chip, thanks to which it is able to determine the connected devices (as well as an accessory from Anker) and decide how much current to apply so that charging goes as intensively as possible. iPhone 6 with help 1byone it will be possible to charge from 0 to 100% in just 1.5 hours, and the iPad Air 2 in 4 hours. This adapter costs a little over 500 rubles.

Nameless charger with LED screen. Chinese marketplaces gear best And AliExpress have already accustomed their regular customers to the fact that goods of very decent quality may not have a brand and a name. Such a device should be recommended to a motorist who is looking primarily for cheapness:

Charging with a simple name car charger has two USB ports and delivers current up to 3.1 A for both. When using one port, the output current is approximately 2 A- therefore, you can successfully recharge tablets and phablets. The LED display shows the temperature of the device and in theory allows the user to prevent overheating. However, for domestic motorists, information about temperature is useless - the Fahrenheit scale is used, which there is no way to change to the Celsius scale.

The cost of this “Chinese miracle” is just over 150 rubles.

Conclusion

A driver who chooses a car charger for a gadget needs to pay attention to the price of the accessory and whether it is original, last. Technical characteristics, as well as a visual inspection of the AZU, will tell the motorist much more about the quality of the device than the manufacturer's regalia.

You should not refuse to purchase a car adapter just because the Chinese made it. In the review of the best AZUs, we mentioned goods from the Middle Kingdom, but the “dinosaur” chargers of the mobile accessories market are from an American company Belkin- ignored. Belkin puts a price tag of 1.5-2 thousand rubles on its charges - although neither in technical characteristics nor in build quality do the accessories of this company surpass Chinese counterparts worth 200-300 rubles.

The seller does not have them (the initial price was $3.5, bought for $2.5)
The era of smartphones with capacious batteries has come and I thought about replacing car chargers. The rest is under the cut. I want to say right away that the review is not very detailed and there will be no preparation either.

I rarely use car chargers, and some average 1.5A charger dangled in the glove compartment for a long time. It seems like not a little, but smartphones do not understand it and as a result, the charging current is not more than 0.5A. And it takes a long time to charge a 4000 mA battery with such a current.
After wandering around Ali, I found the described charge (or maybe someone threw a coupon in Muska). The seller's title, of course, is from a completely different device, but the description is from a car charger.
To begin with, the characteristics from the seller's website, or rather, even from the photos on the product page:
- input voltage 12-24V;
- maximum current 2.1 A;
- two USB ports;
- indication of input/output voltage and current;
- "smart" fast charge due to some kind of ae 4-core chip.
- overheat protection;
- short circuit protection;
- overvoltage protection;
- anti-electromagnetic interference.
- And the most interesting :)

As you can see, the seller has recently been on Ali and he has no rating. But I'm not afraid to buy from these, except for frank slag such as 256 GB flash drives for a couple of dollars. Firstly, you can always raise a claim and return the money, and secondly, if a new seller wants to gain sales, his prices are usually lower than the average for the "chamber".
It is clear that the product did not have reviews, but I looked at other sellers, no one complained.
By the way, these charges are also with.

We continue the conversation.
The package came very quickly, about 2 weeks.
It was packed in a retail box, on which, of understandable symbols, only numbers and names of devices. The manufacturer may be indicated, but not for us. Apparently, this product is for "internal consumption" only.

Charging length without "+" contact 60 mm, front dimensions 25*35 mm.
I wanted to look at the insides of this device, especially at the 4-core chip, but alas, the cover is securely glued, and I didn’t want to break the case (tea is not item 18). The case is made of ordinary plastic, to the touch and "taste" of fairly good quality. The case is solid, nothing creaks or backlash. "Minus petals" are tight.

Let's start the tests.
Sitting in the car and watching for several hours how the mobile phone is charging is not very interesting, so I connected the charger to the power supply from the laptop - 19V. The device immediately gave out three parameters (the readings follow each other after a few seconds): 19V, 5V, 0A, which was actually expected.
Further, Xiaomi Redmi 3 was connected to one of the ports. The voltages remained the same, and the current increased to 1.7A.
Again, unfortunately, I don’t have a good, ripped USB cable so that I can connect the tester and measure the real current. But the input voltage readings completely coincided with the tester readings. By the way, it (voltage) sometimes sagged to 18.5, but this is already the work of the power supply. The output voltage was steadfastly kept at around 5V, sometimes falling by a whole tenth of a volt. The USB tester showed the same values of the output voltage, but it could not cope with the current, or rather it showed only 0.5A (as did the charging itself). Apparently they do not understand each other with Xiaomi. During the charging process, the current changed from 1.7 to 0.5 at the end.

Then another Xiaomi Redmi was connected to the second port. The current immediately became 2.1A (as they said) and changed within 1.9-2.1A until one of the phones was charged. Again, unfortunately, I have nothing to load the USB port with a special load in order to study the promised overload protection, but judging by the fact that two phones do not draw more than 2.1A, it is there.

During charging, the device heats up quite a lot: if you take on the "minus" petals, then your fingers can withstand 15 seconds, then it becomes not very pleasant to hold. Be that as it may, the device successfully coped with several charges of one and two phones at the same time.
Well, and one more test, already in the car. Result:
- in the cigarette lighter keeps firmly;
- charging does not create any extraneous background for the "radio".

Conclusions: a good inexpensive car charger. Of the bonuses, one can name the readings of the car's on-board network, which is sometimes useful to know.

I plan to buy +6 Add to favourites Liked the review +9 +18

Charging, but not only

Popular Chinese online shopping sites offer a huge selection of USB devices for charging gadgets in the car. Some time ago, "Wheels" was carried out, trying to understand whether it is possible to get nickels for the notorious penny?

It turned out that it was impossible: contrary to the powerful charging current of two or three or more amperes declared on the case, none of the penny chargers could provide even one ampere. This time we decided to turn to a range of chargers with a number of additional features, and we are testing three devices that seemed to us the most interesting.

Device #1

Cost - 182 rubles

Structurally - the simplest adapter in the cigarette lighter socket. It has two USB sockets, promises a current of 3.1 amperes, plus it has a built-in voltmeter, ammeter and even a thermometer! As long as the USB cable is not inserted into the charger, the display alternately shows the voltage of the on-board network, then the ambient temperature. When the USB consumer is connected - its current in amperes.

Device #2

Cost - 317 rubles

Structurally, it is also an adapter for the cigarette lighter socket, but with an adjustable “leg” bend. For two USB sockets, a current of as much as 3.4 amperes is promised. The display always shows only the voltage of the on-board network, the current consumption via USB does not show, there is no thermometer. But on the other hand, there is an audible alarm for an emergency voltage drop in the on-board network!

Device #3

Cost - 575 rubles

Structurally - a glass installed in a regular salon cup holder and connected to the cigarette lighter socket with a short cord. It has two 3.1 amp USB sockets, a splitter for two cigarette lighter sockets, and two buttons that turn off the cigarette lighter sockets without pulling the plugs out of the sockets. When the charger is not plugged in, the display alternates between on-board power and USB output voltage. When the USB consumer is connected - its current in amperes.

Operation of additional functions

All three devices can work as a voltmeter. This is a useful feature, since on most modern machines a digital or even a pointer voltmeter is a rarity. In the event of serious problems in the car's electrical network, of course, the signal lamp will light up, but a full-fledged voltmeter will allow you to track, for example, an unpleasant trend of undercharging the battery due to low voltage at idle in traffic jams with powerful consumers turned on, and the start of failure of the brush -regulatory unit in the generator will also help to notice.

How accurate are the voltmeters in our chargers? We connect them to a current source along with a control voltmeter. At 13 volts at the input, the first device gave a decent error of 0.4 volts, the second - an insignificant 0.1 volts, and only the third was flawless.

Not all gadgets have sound control over the voltage drop in the on-board network, only the second device from our samples has such a talent. When the voltage drops to 11.5 volts, it starts to emit a loud intermittent squeak - very convenient, because you can’t always follow the display! Plus, the red inscription “LOW” lights up on the screen.

The ability to measure the temperature of the air in the passenger compartment of the car was present in only one device out of three. Oddly enough, in the cheapest and frailest - No. 1. The function is only partially functional: the temperature readings are correct as long as the device is not used as a charger. As soon as it starts to heat up from charging the phone battery, the built-in temperature sensor starts to perceive the temperature of the charger case, and not the temperature in the car.

Charger number 3 is interesting in that the only one of all three shows not only the voltage of the onboard network, but also the voltage of the USB output. This information is useful: by the voltage drop on the 5-volt output, you can track the overload of the charger. If it gives out under load from 4.8 to 5 volts, then charging is in progress. If the voltage dipped below these limits, this means that the charger is not coping - the phone will charge for a very long time, and the device itself will overheat with the risk of failure!

In addition, the same device is also a cigarette lighter splitter, which is useful when you need to turn on several consumers, some of which are powered by USB, and some by 12 volts (for example, a DVR and heated seats). Each of the two sockets of the splitter is turned on with its own button to turn off consumers without pulling out their plugs.

Work as a charger

Well, now, in fact, the most important thing: let's find out how our subjects perform the main task of charging a mobile device! Let's connect a voltmeter, an ammeter and a load to them and see what maximum output current they will give out until the voltage of 5 volts begins to sag dangerously. And compare the result with the current that is promised.

To begin with, we will load the chargers with a 5 ohm resistor, which should provide an output current of 1 ampere:

Device #1

The voltage dropped to 4.7 volts. The indicator of the device, by the way, is lying: it showed a current of 1.33 amperes, although the external ammeter did not agree: the real current is 0.94 amperes! Very mediocre, but, in principle, workable.

Device #2

The voltage dropped to 4.8 volts. The device indicator cannot show current, but an external ammeter shows 0.99 amperes. Against the background of the promised 3.4 amps, it’s clearly rather weak ... In general, it’s tolerable, you can use it.

Device #3

The voltage dropped to 4.9 volts. The indicator of the device at the same time shows a current of 1 ampere, and an external ammeter also shows 1 ampere. So far, everything is fair, but the test, I must say, is childish ...

Recall that all devices have a charging current above 3 amperes ... There is not much optimism, as in any test of Chinese auto gadgets, so let's try to squeeze at least two amperes out of them, now loading a 2.5 Ohm resistor:

Device #1

The current is 1.65 amps in the load, and the voltage has dipped to an unacceptable 4 volts. Obviously, 1 amp is the limit for this charger (although it is promised, remember, 3.1 amps!).
Weak, but you can use it - for example, for smartphones with a small battery capacity or for a DVR. At the same time, hardly...

Device #2

At 1.8 amperes at the load, the voltage dipped to 4.5 volts. Obviously, 1.5 amps is a reasonable limit for this charger (although it was promised, remember, 3.4 amps!)

Suitable for charging most smartphones, with some charging slowdown, you can also power a DVR or similar gadget in parallel.

Device #3

At 1.8 amperes at the load, the voltage also dipped to 4.5 volts. Despite the large dimensions of the “glass” and the promised 3.1 amperes, the Chinese were stingy with a powerful filling; 1.5 amps is a reasonable limit for this charger as well. Similar to the previous device, it is suitable for charging most smartphones, and with some charging slowdown, you can also power the DVR in parallel.

With the advent of various kinds of gadgets in everyday life, the need for their recharging is growing. Portable batteries partially helped to solve this problem, but at the same time they added to the army of devices that need to be charged regularly. The USB socket is now required to be built in everywhere. Today's review will focus on three car chargers. All of them have two USB ports and are installed in the cigarette lighter socket.

Let's start with vkworld C101

This copy is sold in a transparent plastic box with a foam bed. The charger is a metal “bullet” with a sharp tip and turned out to be quite weighty. The technical characteristics are as follows: the on-board network is supported from 12 to 24V, and the output voltage is 5V with a maximum current consumption of 2.4A. But there is not a word about the presence of various kinds of protection and compatibility with energy consumers.

Installed vkworld C101 in the cigarette lighter with effort, keeps confidently. Under maximum load, the case remains slightly warm. Rigid fixation and a small area of "positive" contact can contribute to poor electrical contact with the cigarette lighter. During the operation of the charging effect, it was not noticed on the radios. Let's move on to the tests. The test stand was a power supply with a cigarette lighter socket. The load for the charger was a specialized EBD-USB load tester from ZKEtech.

Judging by the tester readings and the voltage drop, the ports are connected in parallel and both can deliver a large current. And the markings “2.4A Tablet” and “1.0A Phone” near the ports only indicate that the ports are not universal and one of them supports recharging Apple tablets, and the second supports most Android smartphones.

The device can produce 2.7-2.8A for a long time (which exceeds the passport value of 2.4A). If you increase the total load in excess of 14W, then the voltage gradually decreases to an unacceptable value.

Let's move on to the second test subject - vkworld C103

The packaging hides a very interesting device with a funny design. The color design and dimensions of the device may not fit into the interior of the cabin, but the functionality is quite interesting.

Its characteristics are concise as in the previous model - the input voltage is from 12 to 24V, and the output is expected to be 5V and a maximum current of 2.1A. Next to the USB ports is a display and three LEDs. The display alternately shows the voltage of the on-board network and the total current consumption of the connected devices. The indications are supplemented by the lighting of the corresponding LEDs “V” or “A”, but the rightmost LED is on all the time and is signed as “work indication”. Unfortunately, no description is attached to the charger, and I did not find the necessary information on the official website. The fact is that the device has a hidden speaker, and it was experimentally found that it makes a sound when the voltage of the on-board network is below 10V. Let's move on to testing.

According to the results of testing vkworld C103, I will say that the charger cannot deliver a current higher than 2.1A, and the USB ports are connected in parallel. At a load of 10W or more, the charger converter exits the mode and the output voltage quickly drops down to 1.5V. On the other hand, it is the current 2.1A that is declared by the manufacturer as the maximum. Slightly frustrating measurement error. With a real current of 1.533A, the indicator shows 1.7A. During testing, the radio worked without problems and the charger did not affect the air. As for the versatility of USB ports, only the left port supports most Android smartphones, and the right one has a marker to support Apple tablets.

You can ask questions about accessories to representatives of the brand in the official Vkontakte group.

Third on the list - Chuwi C-100

The last of the representatives of the devices to be investigated is the Chuwi C-100 charger. This time, the kit comes with instructions with a more detailed description of the device parameters.

Name: Ublue
Model: C-100
Connection: dual USB
Input: 12-24V
Output voltage: 5V
Output: 2 x 2.4A (3.4A max)
Dimensions: 53.4 25.4 25.4mm
Weight: 45.5g

The appearance and build quality are top notch, and the device is held quite securely in the cigarette lighter. A transparent plastic border around the USB ports with its glow demonstrates the performance of the device and helps to find it in the dark. The ports are not signed, and tests confirm their omnivorousness in terms of supporting devices from various manufacturers.

Tests have shown that the declared 3.4A can even be slightly exceeded without harm to the device. The heating of the charger is moderate, the metal case in this regard proved to be the best. During testing, the output voltage pleased with its stability even when exceeding the passport data, unlike the previous chargers. This charger has minimal impact on the radio, like the previously tested devices.

Afterword

On sale you can find car chargers for every taste. There are miniature ones for one consumer, which are practically invisible in the cigarette lighter socket. And there are capable of overpowering the simultaneous recharging of four tablets. There are placed in a cup holder or with additional functions, such as those described in the article.
Devices from vkworld correspond to the declared characteristics, but the characteristics themselves look a little dull. If your smartphone consumes about 1.7 - 1.9A, then you can not connect additional consumers to the charger. The charger from Chuwi looks more profitable in this regard, it will withstand two consumers with a current, say, 1.7A and 2.0A. At the same time, devices from various manufacturers will be able to discern “branded” in this charger and will not limit themselves in their appetites.