Samsung Q1-900 Laptop Car Charger DC Adapter - Universal Power Supply for Travel, Office & On-the-Go Use

This Replacement Laptop DC Power Adapter/Car Charger for your laptop enables you to operate your notebook or charge the battery from your Car Cigarette lighter. If you are running your computer on DC power with a battery installed, the adapter charges the battery (if needed) and maintains its charge. When the system is off, the DC adapter will charge the battery and then maintain its charge.