Power banks are a portable device which is compressed of special rechargeable battery in a stylish case with a circuit to control the flow of power. A power bank manufacturer made a device that allows storing electrical energy, which has the aim to charge up other electronic devices like smartphones, tablets, laptops, etc. They have become progressively popular because the battery level of portable media players, phones, and tablets is outdone by the time amount you use each day. You can simply top-up your portable electronic devices by keeping a battery backup when you are far from a charging an outlet. They are designed for almost every USB-charged devices such as GPS systems, portable rechargeable speakers, cameras, MP3 players, phones, and other portable electronic devices charge from the power bank. Almost every device that can charge at home from USB can charge from a power bank. You need to keep your power bank charger to charge the device.
How to charge the power bank?
Power banks commonly have a dedicated socket for receiving power. The power bank has a USB input socket so you can charge it with the computer, but it charges faster when using an adapter of a wall socket. Mini or micro –USB input socket is used by power banks for charging and a full-sized output USB socket for discharging. To fill up a power bank can take quite a time. Charging timing depends on the power bank capacity and its current charge level. Power banks have led indicators to show the charging level. This feature is for safety to prevent overheating and overcharging.
Charging life of a power bank:
The number of charging or discharging cycles of a power bank depends on the internal component and manufacturing quality of the power bank. It differs model to model. Better, expensive, and branded power banks can last longer whereas smaller, cheaper, and local power bank falls short, depends on its treatment. Moreover, the power bank charging life also depends on the controller circuitry and battery cell quality. A good quality power bank can hold a charge longer with minimal loss for 3-6 months. On the other hand, lower-quality power banks struggle more than 4-6 weeks to retain a useful charger.