Lenovo 0A36235 power adapter/inverter Indoor 170 W Black

Get power when and where you need it with a spare ThinkPad AC adapter. Keep one in the office, one at home, and another in your carrying case for convenient access to power wherever a wall outlet is available. - Plugs into available wall outlet to deliver AC power to your ThinkPad W520 laptop and to recharge the system battery - Offers the same specifications as the standard AC adapter that ships with the ThinkPad W520 laptop