Instruct: Classify Amazon reviews into positive or negative sentiment
Query: iBook battery review

I purchased this battery as a replacement for my iBook G4, thinking that I would see the kind of battery life I saw with the original -- that is not the case. The original would give at least 3.5 hours of run time (more depending on the programs running). This one, however, will barely carry the computer for 2 hours. I only paid around $50 - so maybe it's true that you get what you pay for. Next time, I'll opt for buying directly from Apple.