![]() Even so, many users tell us that their after-sales service is quite efficient and reactive.Īnker PowerCore Essential ( £39.99 upon publication): a consequent energy reserve. We have decided to position it as an alternative because the brand is not well-known enough to have a better overview of it. It also has a torch, which is always handy. Its relatively compact size allowed us to carry it easily in a bag. Indeed, it is equipped with quite a lot of connectivity, consisting of 2 USB-A ports and one USB-C, and develops an interesting power of 18 W which was verified during our tests. Iniu’s power bank managed to surprise us as it seems so well-designed. INIU Power Bank ( £19.99 upon publication): economical and practical. If in doubt, opt for a reputable brand such as Anker or RAVPower.Īnker and RAVPower are two of the most reliable brands in the world of external batteries. However, be sure to ask around, as quality and/or after-sales service are often not as good as they could be. ![]() The brand: as power banks are a “trendy” device (we need them for almost everything nowadays), many manufacturers offer cheaper devices.You risk damaging the batteries of the devices you connect to it, especially if it is not equipped with a voltage regulator that adapts the output power to what your device can handle. Safety: never buy a power bank that does not comply CE standards.So make sure you choose the right one for the job: if you need to recharge every day, a small, light battery that can be carried around in your pocket is best, while a heavier battery will be useful when travelling, for example.Ī power bank should be easy to carry in order to be available when needed. Transportability: as mentioned above, more powerful batteries are also generally heavier.However, check the maximum combined output power of these ports, as some batteries divide their power according to the number of connectors. A higher number of ports also often means that the battery is more versatile (as more than one type of port can be used at the same time). Connectivity: the cheapest batteries only allow you to charge one device at a time, but others allow you to charge more than one device simultaneously.The input and output power determine the charging speed of your device. Two main standards currently coexist in external batteries: Quick Charge 3.0, which can inject up to 18 W of power, and USB Power Delivery (introduced with USB-C), which can theoretically deliver up to 100 W to charge both a smartphone and a laptop. Fast charging: more and more devices are supplied with chargers capable of delivering higher power to charge them more quickly.Sometimes this value is not openly stated by the manufacturer, but a quick calculation can be used to determine it: Vdc x Adc = Output power (expressed in W). At least 15W for USB-C ports and 8W for USB-A and Micro-USB ports are required to ensure maximum charging speed at both input and output. Input and output power: this depends on the type of port the power bank has, but also on the power specifically allocated to it.Moreover, even if manufacturers are working on this point, an extended capacity implies a larger size.Ī light indicator is always a useful addition to know how much energy you have left. Note, however, that the displayed autonomy is often a bit optimistic (sometimes you have to take away almost 20%). This data allows you to know if you can charge a device to 100%, and how many times (by comparing the number of mAh of the device to be charged – the average for a smartphone is about 4000 to 5000 mAh). Battery life: this is calculated in mAh.Here are the features you need to understand and consider before you buy: As the battery life of smartphones is always limited, the power bank is an indispensable accessory. The difficulty in choosing a power bank lies in the multitude of models on the market and the sometimes nebulous description of the data sheets. Using this device, we tested the different ports of each external battery to check the actual performance. To do this, we took a smartphone that supports the latest QuickCharge standard and Qi wireless charging (Samsung Galaxy S20 FE). Next comes the fateful stage of charging tests.
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