How many hours do I charge the power bank

Charge power banks properly

How to charge power banks correctly:

Opinions on the correct charging and maintenance of rechargeable batteries made of lithium-ion and polymer battery devices are drifting far apart. This article has summarized expert opinions and provided helpful advice.

That's what the expert thinks

The outdated opinions that you can often find on the internet still linger. When dealing with power banks and USB batteries, there are basically only a few factors to consider in order to extend the service life.

Which charger should you use for USB batteries?

Charging electronics within the USB batteries ensure that the lithium cells are optimally charged. Even when there is a high supply of electricity directly from the power supply unit, the electronics ensure a sufficient supply of energy to important cells. The input voltage is very important in this case, as it must be observed.

Power banks that are used without any power supply units can only be charged with a 5 volt USB socket. These are power supplies for smartphones, tablets and cell phones. However, you have to make sure that the power supply units really have a 5-volt output. There is also the option of charging via the PC at the USB output. It usually takes longer because only a 0.5 ampere current can flow.

What is the optimal state of charge?

So that the service life of the ion and lithium polymer batteries can be fully utilized, the State of charge between 30 and 70 percent of the total capacity. If you don't need your batteries to be fully utilized, you can start charging a little earlier and stop at around 70 percent. Viewed figuratively this corresponds to 3 LEDs with a capacity display of 4 LEDs.

Full charge and the first charge?

Anyone who uses a permanently fully charged battery will have negative long-term consequences for the service life. Therefore only fully charge your battery when you need the full capacity. Contrary to the belief of many people, the first charge is not necessary. Only if you need a total capacity is a full charge necessary before the first use. In any other case, you can start working immediately.

Should you also empty power banks?

This question can be answered with an unequivocal NO.
Regular discharge does not extend the service life nor does it help to maintain the overall capacity performance. Rather, the opposite can occur in the long term, as the cells could be permanently damaged. You should therefore always ensure that you recharge the power banks regularly so that the batteries do not run down completely.

High temperatures and damage?

In any case, high temperatures should be avoided. The worst-case scenario is the combination of a high temperature and a fully charged battery, as this process leads to relatively rapid damage to the cells. If you do not use the battery for a long time, power banks should not be fully charged. 70 percent state of charge at a room temperature of 0 ° C to 25 ° C is completely sufficient to keep the battery healthy in the long term and to extend its service life.