Comparison Samsung EP-T5020 vs Samsung EP-TA220

The number of USB connectors in the design of the device. We emphasize that here we are talking only about classic, full-size connectors — the so-called USB A; the number of USB-C ports, if any, is specified separately (see below).

The number of USB ports (of any type) corresponds to the number of gadgets that can be simultaneously connected to the charger using adapter cables or plugs for the appropriate connector. Note that not all chargers are capable of delivering full power to all charging outputs at once; see "Charge current" for details. As for the specific number of ports (USB A and/or USB-C), nowadays, relatively simple chargers for 1 port or 2 ports are the most popular. This is due to the fact that separate chargers are usually purchased for one or two specific gadgets, and a larger number of charging outputs is required relatively rarely. However, on the market you can easily find models with 3 ports or 4 ports ; and the most “multi-charged” modern devices have 5 or 6 USB ports or even more.

The number of USB-C connectors provided in the design of the charger.

USB-C is a relatively new type of connector; it has dimensions slightly larger than microUSB and a double-sided design that allows you to insert the plug in either direction. At the same time, despite their compact size, rather advanced features can be implemented in such charging ports — in particular, high power supply and many fast charging technologies. On the other hand, specifically in chargers for gadgets, connectors of this type are much less common than full-sized USB (USB A), and in smaller quantities — one at a time, less often two. This is due to the fact that a cable is usually used to connect rechargeable gadgets, with detachable cables it is more convenient to use ordinary USB ports, and installing such ports in a charger (even a compact one) is easy. So in fact, it makes sense to specifically look for a device with USB-C mainly if the you have such a cable already (or a gadget with a suitable plug).

The maximum power that the charger is capable of delivering to one rechargeable gadget (for models with 1 connector or with 1 wireless platform — the actual charging power). We emphasize that for wireless devices, it is the power in the wireless format that is indicated here (even if the design has a USB port with a higher power). Wired chargers usually list the USB power with the highest charging current or with support of the most powerful fast charging technology.

The smallest value of this metric nowadays is actually 5 W. Other popular options include 10W, 12W, 15W, and the most powerful models have 18W or more to charge laptops(up to 100W).

Higher output power allows you to speed up the charging process; and in the case of wireless devices, a value of more than 10 watts already allows us to talk about the presence of fast charging. At the same time, a number of nuances are associated with this parameter. Firstly, not only the charger, but also the gadget being charged should support the appropriate power — otherwise the speed of the process will be limited by the specs of the gadget. Secondly, in order to use the full capabilities of the charger, it may be necessary to support not only the appropriate charging power, but also a...certain fast charging technology (see "Fast charging"). Thirdly, in a charger with several charging connectors, the maximum power per device can only be achieved if the other ports are not used.

The total power provided by the device while simultaneously charging the maximum possible number of gadgets. This parameter is indicated only for models that can work with several gadgets; for a 1-socket charger or a wireless platform, the operating power is given in the “Power per 1 device” paragraph.

When evaluating this parameter, two points should be taken into account. First, when the charger is fully loaded, the power of each individual port and/or wireless platform may be lower than the maximum possible value. For example, some models with 2 USB ports for 2 A and 1 A (10 W and 5 W), with simultaneous operation of both ports, can output only 5 W each, that is, only 10 W in total (this is the number and indicated in this paragraph). Secondly, the distribution of power over individual connectors can be different — depending on the current on each port and supported fast charging technologies; these nuances are best specified in the official documentation.

The presence of a cable in the delivery kit of the charger, or any other specific type of included cable.

The presence of a cable is indicated mainly for wireless devices (see “Type”) — in such cases, we are talking about the power cable of the charger itself. For wired models, the type of connectors on the stock wire (s) for charging gadgets is usually specified. At the same time, the USB port is used by default to connect to the charger itself, so this plug may not be mentioned in the description of the wire. On the other hand, there may be such connectors:

— USB-C. A miniature version of the USB connector, gradually replacing microUSB in modern portable devices. It has a convenient reversible plug design, and can also provide some advanced power options not available with microUSB. Also note that USB-C can be used in a cable not only to connect to a gadget, but also to connect to the charger itself (along with traditional USB); so on the market you can find corresponding cables like "USB-C — microUSB", "USB-C — Lightning", etc.

— microUSB. Universal connector, extremely popular in portable gadgets of various types; only relatively recently has it begun to give way to the more advanced USB-C (which differs from it in its one-sided design and lower power supply).

— Lightning. Universal connector, used e...xclusively in portable Apple devices. Like USB-C, it has a two-way layout, but a slightly different design.

The length of the cable supplied with or included with the charger. For wireless models, the length of the power cable of the charger itself is indicated here, for wired models, the length of the cord for charging gadgets

Anyway, a longer cable gives more freedom of movement, but it creates inconvenience for short distances. Also note that charging is supposed to be used in the immediate vicinity of sockets, so wires longer than 2 m are practically not found among such devices. A length of more than 1.5 m is considered significant, from 1 to 1.5 m — medium, from 0.5 to 1 m — small, and in some models there are wires shorter than 0.5 m.