This emergency power supply is a portable energy storage power supply suitable for emergency backup, outdoor travel, emergency disaster relief, field work and other applications. The product is equipped with a built-in lithium battery, which is designed as an 8-series battery with a voltage of 25.6Vdc (8 * 3.2V). It has an inverter AC output and outputs a 230V (50/60Hz) pure sine wave. It has multiple DC output ports, as well as USB-A and USB-C interfaces.