1. Look at the load type: According to the load equipment, you can choose a UPS that is more suitable and cost-effective. For example, if we need to bring network equipment and office computer equipment, then we can choose the backup type. If we need to bring brand servers or precision instruments , you need to choose the online type, and you need to choose the industrial frequency machine if you want to carry industrial equipment, motors, and air-conditioning loads.

2. Look at the load power: power is generally calculated in watts (W). For example, if we need to carry 300W equipment, then we can choose a 360W UPS. If we need to carry 700W, we need to choose a 900W or above UPS.
3. Look at the extended time: The length of time depends on the size of the battery capacity. For example, if the required time is short (10-15 minutes), choose the built-in battery. The number and capacity of the built-in battery will vary according to the power of the built-in battery. The difference is generally divided into 7AH and 9AH. If it takes a long time (1-12 hours), choose the package with an external battery. The number and capacity of batteries can be flexibly configured according to time requirements.
4. Look at additional functions: see if there are functions such as intelligent voltage regulation, over-temperature protection, and lightning strike protection, which are crucial to the safety of emergency power supplies.