Portable outdoor power supply 250W custom wholesale

Portable energy storage power supply 250W parameters:Specifications: 250WSize: 158*165*173mmCapacity: 12.8V /20Ah /256WhBattery: 2AhCell type: lithium iron phosphateNumber of batteries: 40pcsPower: 250WDC output: 4*USB/1*TYPE-C/2*DC (5521)/1*Cigarette lighterUSB-A interface: 5V/2A, 9V/2A, 12V/1.5ATY...