A portable charger, also known as a power bank or external battery pack, is a portable device that can store electrical energy and later use it to charge other electronic devices. It typically consists of a lithium-ion battery, charging circuitry, and one or more USB ports for connecting devices.
Portable chargers are used to provide on-the-go power to various electronic devices such as smartphones, tablets, laptops, smartwatches, Bluetooth headphones, and other USB-powered devices. They are especially useful in situations where access to a power outlet is limited or unavailable, such as when traveling, camping, or during emergencies.
To use a portable charger, you simply need to charge it beforehand by plugging it into a power source, such as a wall outlet or a computer's USB port. Once fully charged, you can carry it with you and connect your device to the charger using a compatible charging cable. The portable charger will then supply power to your device, recharging its battery.
Portable chargers come in various capacities, typically measured in milliampere-hours (mAh) or watt-hours (Wh), which determine the amount of energy they can store. Higher-capacity chargers can provide multiple charges to devices or charge larger devices, while smaller-capacity chargers are more compact and lightweight but may provide fewer charges.
It's important to choose a portable charger with sufficient capacity and compatible charging ports to ensure compatibility with your devices. Additionally, portable chargers may have additional features such as multiple charging ports, fast charging capabilities, LED indicators, and built-in safety features to protect against overcharging and short circuits.