Instruct: Classify Amazon reviews into positive or negative sentiment
Query: markedly inferior

Like some other reviewers, I found this battery markedly inferior to the original that came with the drill (which, btw, I liked very much). I purchased this "Robert Bosch Tool Corp." Skil 120bat battery in mid 2009 from ereplacementparts.com. It died on me years sooner than the original, and didn't hold as much charge.