There are two types of batteries in the power bank:
Lithium battery: has the highest energy density high, but you must be very careful when using it. Because a short circuit or overcharge and overdischarge will damage the battery, a protection board is generally required. Almost all early cell phones used this type of battery. However, due to the use of a metal casing, it was relatively heavy (there were some restrictions on casting) and was very powerful when exploded. It has now been gradually replaced by lithium polymer. batteries.
Lithium polymer battery: Nowadays, almost all cell phones use this type of battery. It is characterized by its thinness and lightness, and there are not many restrictions on the shape. The disadvantage is the number of cycleses. Charging life is not as long as lithium-ion. A skid plate is also required.
A power bank (power bank) refers to a device that can directly charge mobile devices and has its own energy storage unit. The main category of multifunctional power bank currently on the market is basically equipped with standard USB output, which can basically meet the needs of various digital products such as mobile phones, MP3, MP4, PDA, PSP, Bluetooth headsets, digital cameras. and other common mobile devices on the market.
An external battery is actually a large-capacity portable power supply that is practical and easy to carry. It is a wearable device that integrates energy storage, voltage boosting and charge management.
The power bank charging socket cancharges mobile devices directly via mains power and has its own energy storage device. It is equivalent to a hybrid of a charger and battery backup versus a backup power supply. , it can simplify a charging socket device, compared with a charger, it has its own energy storage device, which can provide backup power for digital products when there is no source direct power supply or when you are away.
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1. Large capacity: Polymer batteries have 10-15% higher capacity than steel shell batteries of the same size and specifications, and 5-10% higher capacity than aluminum shell batteries.
2. Good safety performance: The structure of lithium polymer batteries uses aluminum-plastic soft packaging, which is different from the metal shell of batteriess liquids. Once a safety hazard occurs, liquid batteries explode easily. while polymer batteries At best, the core will only swell and burn.