Lapower Inspiron 640 90 W Adapter(Power Cord Included)

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