Since the Dell ac adapter itself is not fragile,it could be used for longer time with proper methods.Rules as follows are worth noticing:
Dell laptop ac adapter are generally marked with"only be used indoor or for information products", therefore, you should try to avoid using it outdoor or in harsh environments to prevent the Dell ac adapter being exposed or moisted. This requirement is not just limited to power adapter, so do other electronic products. Because exposure will not only accelerate the aging speed of wires, and shell, etc.but also raises the working temperature. While moisture could result in internal short-circuit,causing burning.
Please unplug the power plug,when you do not use Dell ac adapter, because long term in working condition could affect the adapter life.besides,connection point of the power cord and Dell ac adapter should be paid additional attention to.The Laptop AC Adapter connections should be avoided bending in case of poor contact. Although Dell laptop adapter are broadband operating voltage, indicating from the 100V to 240V, it could also be damaged under unstable voltage

