I have a Dell Inspiron 1545 and bought this after my Dell charger's cord completely started splitting and cracking with exposed wire to the point of not working (just as the warranty from Dell for it ran out, how convenient for Dell..) and I needed a charger. It is compatible using the 23 tip, though some things are not-so-great. I've had it for max three months and although it isn't cracking, right at where you plug the tip in the cord covering is starting to leave wiring exposed like it was tugged. It hasn't been tugged, this is just from about daily ware. It's important that this works though because just after my laptop's battery warranty ran out, that too died. And also, the Dell, the space where you put the charger in, is octagonal. The tip provided is circular. It has a definite tendency to fall out.