The so-called "portable power station" is simply understood as a "large power bank". At present, the main application scenarios are outdoor activities and emergency power consumption. Power supply for equipment and small household appliances to alleviate power shortages such as power shortages, power outages, and emergency rescue.

Compared with common power banks, outdoor portable power station products are equipped with higher charge capacity and output power. It is understood that portable power station products can be divided into two categories according to the power of a single machine: one is small, lightweight equipment with a charge of 0.5-1kwh; the other is a device with a charge of 1.5kwh to 2kwh, which can be replaced Previously the fuel generator market.

In terms of output power, portable energy storage products can reach 100W to 2200W and are equipped with USB, AC, DC, Type-C, PD, and other interfaces, which can power digital devices such as refrigerators and rice cookers, and small household appliances. Since portable power stations usually carry inverters, they can support AC and DC output, and the price is mostly between $300 and $3,000. In contrast, the power bank commonly used by consumers can only support DC output.

In addition to charging in advance, a portable power station can also be used with solar panels. The output power of a single solar panel is between 60w and 200w so that when the battery power is exhausted, the energy storage can be charged outdoors using photovoltaics to form a small solar power generation system to achieve continuous off-grid power generation and extend the battery life.

The sudden explosion of the portable power stations is driven by both the supply side and the demand side.

The COVID-19 catalyzed the increase in product volume, and both outdoor and emergency scenarios benefited. On the one hand, under the normalization of epidemic prevention and control, the global enthusiasm for outdoor sports is high, and outdoor consumption such as family self-driving tours, small picnics, camping, photography, fishing, etc. has been upgraded, and outdoor power supply has become the mainstream of short-distance power consumption; Uncertain factors have pushed up the demand for backup in emergency scenarios, and the use of portable energy storage at home has increased.

From the supply side, technological changes have greatly improved the convenience and practicability of products. In the early days, the power supply for outdoor and emergency situations was mainly provided by small fuel generators or lead-acid batteries, but they all had their own shortcomings. Parts problems will occur after the fuel generator is placed for a long time, and it must be maintained frequently. The other is that the noise is very loud, the operation is complicated, and the volume is relatively large and the movement is limited; lead-acid batteries, are the batteries of many two-wheeled electric vehicles. Lead-acid batteries also have their own problems, that is, short life and poor battery life.