... 24v4a, 24v4.5a etcSpecification of universal external laptop battery charger: Input VoltageAC 100~240VOutput Voltage5~36VMax Output Current2.5~ ... Camera, Notebook adapter, laptop adapter ,ADSL AP, Wireless Lan Station, LCD Monitor, Hard Disk, Communication Terminals, Any Portable Device ... ,etc. Detailed picture of universal external laptop battery charger: 90w 24v3.75a universal external laptop battery ...