stw14@stwpower.com 
It mainly depends on the power, port, battery capacity, equipped function, brand and model of the power supply.
1. Power, the greater the power of the power supply, the more devices that need to be charged, or some devices with relatively high power can be satisfied. For example, the rice cooker + notebook + several mobile phones are charged at the same time. Generally, if the power is low, it will be directly overloaded, and the output will be stable.
2. Ports, USB and AC ports are the most basic. There will be more devices equipped with other ports that can be charged, such as Type-C, DC, car charger, QC, PD, etc. Which charging is supported? You can contact customer service directly.
3. Battery capacity, the larger the battery capacity, the longer the power supply.
4. Equipped with functions, the lithium battery generator will also be equipped with some functions to make outdoor travel more convenient, such as LED lights, used for night lighting, fast charging, or some hard functions, such as security, with battery failure, overheating Overvoltage, overload protection, etc., are safer and more convenient to use.
5. Looking at the brand and model, we have analyzed four aspects before. When choosing a lithium battery generator, you will have a general direction. You can choose a trusted brand directly.
Whether it is an outdoor trip or a family emergency, the lithium battery generator is an indispensable tool. You can choose the corresponding model according to your own budget and brand preferences. We recommend STW 1000W, which is more cost-effective.