Using a 19V (3.42A) power adapter instead of a 20V (2.0A) for my Lenovo laptop. Is this safe?? (Laptop battery is non functional)

Im ready to accept "long term" degradation to my laptop if i can remain lazy and not go having to find a perfect replacement adapter. Third world electronics scares me (Im in the third).
As long as i can run my laptop without my files being wiped out.

Thanks