The first phones could work offline for several days and did not need a backup power source. However, as the technical capabilities of smartphones grow, and with them their power, situations when a mobile device has to be charged several times a day are becoming more frequent. Therefore, external batteries – portable energy sources - have become widespread.
There are several main criteria that you should pay attention to when choosing a power bank. These are capacity, discharge current, size and weight.
The most important criterion that determines how long the battery will be able to provide energy to a mobile digital device. The higher the battery capacity, the more gadgets it can charge. For comfortable use of most modern smartphones, the VA2240 model with a capacity of 10,000 mAh is suitable, which is enough for 2-3 phone recharges.
However, if you need to charge not a smartphone, but a more capacious tablet, or need to stay in touch constantly during a long hike or trip, you should pay attention to the external battery VA2280 with a capacity of 20,000 mAh, which provides enough energy for 5-6 charges.
One of the indicators on which the charging speed depends. The RIVACASE VA2240 and VA2280 have an output current of 2A. Thanks to such a high value, these external batteries will be able to quickly raise the battery level of your smartphone and you will not need to fear being out of touch at a crucial moment.
DIMENSIONS AND WEIGHT
There is a certain rule, the larger the battery capacity is, the larger the size and weight it will have. The VA2240 model, optimally suited for daily use, weighs only 225 grams, and the more capacious VA2280 weighs 410 grams, which is also very small considering the high capacity of these models and the peace of mind afforded by the extra power of the larger power source.
In addition to the main characteristics, external batteries from RIVACASE have a number of additional options. These models have a Smart Output function that detects the device connected and selects the most optimal charging mode.
It is also important to have a digital display, which helps you track the decrease in the battery charge level in time to recharge it before the device shuts down.
Another positive feature of external batteries is the presence of several types of ports: two USB A outputs, which make it possible to recharge two digital devices simultaneously, and micro-USB and USB Type C inputs – the most common specifications, so even if your charging cable was not at hand, you can always find an opportunity to recharge the power bank if necessary.