It's input voltage (240vac) is good, the output 13.5V is ok, and it's certainly powerfull enough with its 1800mA...
It should work, the only thing you have to mind is the output plug (the one that comes out of the adaptor into your charging unit).
Some of em have the negative lead on the outside, positive on the inside, and some have it the other way around...
you should make sure it is the same as your old adapter. + and - connections are normally printed on the cover somewhere, if not, you'll have to measure it...