Original adapter shows output of 19V 3.16A. I can't see a wattage rating on it but indications are it's 60W.
Battery itself is marked 11.1V 48Wh (44000mAh)
Searching on-line keeps throwing up a 19V 4.74A 90W after market variant that is claimed to be a suitable replacement for a 3.16A adapter. Sounds over-powered to me but they are considerably more common and therefore cheaper.
Is the higher rated adapter OK to use?
I am tempted just to get a cheap one off trade me.