Lenovo ThinkPad 135W Slim Tip AC Power AdapterGet power when and where you need it, with the ThinkPad 135 W AC adapter. Keep one in the office, one at home and another in your carrying case for convenient access to power. Just plug it into an available wall socket to deliver AC power to your compatible ThinkPad laptop and recharge the system battery. ThinkPad AC adapters are compact, energy efficient (Energy Star V (ES 2. 0) rating) and backed by a one year warranty Performs to the same