Instruct: Classify the given review into positive or negative sentiment.
Query: Horrible junk - from 2 sets, one never worked and the other one broke down within less than 6 months

These (I guess) after market batteries are just plain garbage and an awful waste of resources. Don't buy. I bought two. The first never charged and I returned it for full refund. The second worked for a few weeks but now only charges to ~50% capacity, with further decreasing tendency. And I didn't even use it much. The rubber foot attached to it (to become one of the laptops rubber feet) fell off immediately when I first unpacked it. I am contemplating to dispose of it for fear that one day it might cause damage to the laptop. Awful junk. Should be taken off the market immediately.