Task: Sentiment Analysis
Input (English): Review: I bought this product to replace the original battery charger that came with my 12" Powerbook G4. Unfortunately, it seems that it only will add charge when I have the computer closed or off. If I have the computer open while the charger is plugged in, it not only doesn't add charge, it also makes the screen brightness oscillate.I wouldn't recommend this product for anyone who needs to charge their Powerbook while using their Powerbook. Wish I would've just spent the extra money on the Apple charger. 
 Polarity: Negative
Output (English): True