DC power bank charge current
Nominal charge current supported by the power bank when charging its own battery via the DC connector (see "Battery Charging Inputs").
Models with DC charging inputs are usually equipped with chargers that most often have a current of this indicator. Therefore, you have to pay attention to the amperes indicated for the DC input, mainly when looking for a third-party charger for this connector. And here it is worth proceeding from the fact that the current issued by this charger should perfectly correspond to the charge current of the power bank itself. It is quite possible that the output current of the charger is lower than the nominal one — unless the charge time increases accordingly. But it is undesirable to connect a power bank to an overly powerful energy source: it is not a fact that the built-in controller can effectively reduce the current to the nominal value and prevent battery overload.
Bundled cables (adapters)
Types of cables and/or adapters for charging external devices included in the power bank set.
The type of such cables is indicated by the plug used to connect to the gadget being charged; connection with the power bank itself is usually carried out through a standard USB A or USB type C output. We emphasize that in this case, we are talking about detachable cables/adapters; types of built-in charging cables are specified separately (if any — see below).
In general, this parameter allows you to evaluate the possibilities of a power bank available out of the box, without purchasing additional accessories. As for specific interfaces, most often external batteries nowadays are equipped with
microUSB,
USB type C and/or
Lightning cables/adapters; more specific connectors are extremely rare. Here are the features of the most popular options:
— microUSB. A connector that is extremely common in modern portable gadgets. It is inferior to the newer USB type-C in terms of convenience and several performance specs, but still has not lost popularity.
— USB type C. A relatively new standard for miniature USB connectors, used for charging both portable equipment and larger devices — in particular, some ultra-compact laptops. Physically, it differs from microUSB in a slightly larger size and a two-sided design that allows you to connect the plug b
...oth ways. In terms of performance, USB type C is notable for better compatibility with fast charging technologies (see above): more fast charging technologies can be used with it, and Power Delivery was created based on this connector. At the same time, the presence of a USB type C cable does not mean support for fast charging.
— Lightning. Standard original connector for Apple gadgets; other manufacturers do not have such a port.
Note that if several types of bundled cables/adapters are claimed in the specs, the specific format of such accessories may be different. For example, "microUSB plus USB type C" could mean two separate cables, one cable with two plugs, a cable with one plug plus an adapter to another, etc.Solar panel power
Panel with photocells to generate electricity under the influence of sunlight. Through its surface, you can recharge the power bank during the daytime, whether it is far from civilization or when there is no available outlet at hand. Common solar panels include monocrystalline, polycrystalline and film. The former have the highest efficiency, the latter have relatively low efficiency. However, the competitive advantage of film panels is flexibility and light weight. The power at solar surfaces is usually small, which is due to their relatively small area.
