Features ： Strong, durable construction and compact design. Charges your device at maximum current and full speed. Charging will automatically stop when battery is full. Rated Power: Input: 100-240V, 50-60Hz~1.5A Output: 19.5V 2.31A 45w 。 Connecter size: 4.5mm * 3.0mm-Tip (4.5mm outer Diameter, 3.0mm inner Diameter with central pin) !!! Please Note !!!(NOT FIT 19.5V 3.34A 65W) Compatibility with Dell inspiron 11/13/14/15/17 3000 5000 7000 series; 11 3000 3147 3148 3152 3153 3157 3162 3168 3179; 13 5000 7000: 5368 5378 7347 7348 7352 7353 5368 5378 5379 7368 7378; 14 3000 5000 7000: 3451 3452 3458 3459 3462 3467 5451 5452 5455 5458 5459 7437 7460; 15 3000 5000 7000: 3551 3552 3558 3565 3567 5551 5552 5555 5558 5559 5565 5567 5568 5578 7558 7568 7560 7570 7579 7569; 17 5000 7000: 5755 5758 5759 5765 5767 7778 7779 Compatible P/N: AA45NM131 DA45NM131 DA45NM140 HA45NM140 HK45NM140 LA45NM121 LA45NM131 LA45NM140 Dependable Protection:built-in multi safeguards and cooling system to protect against overcharging, short circuiting, overheating, spark, intelligently monitoring temperature to safeguard your devices Features ： Strong, durable construction and compact design. Charges your device at maximum current and full speed. Charging will automatically stop when battery is full.