Given an Amazon review, indicate whether it is a 'Positive Review' or 'Negative Review'.
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Question: Loved it! Lifhtweight and very protective of the device.

Answer: Positive Review

Question: Works great with my Surface Pro 3. Folds flat to fit in the pocket in the carry case I bought for my Surface. Very good battery life.

Answer: Positive Review

Question: I bought this battery for my Lenovo Thinkpad SL510 on May 14, 2014, as my original battery couldn't hold a charge for more than five minutes. It came in a nice, clean package. Since then, this battery worked just fine. Just one day I had a problem (After a full charge cycle, it seemed my battery had less than 15 minutes remaining), but I managed to solve it buy removing the battery for a while and putting it again in its place. UPDATE: (November 11, 2014) Almost six months later, it started giving me problems It didn't fully charge anymore (it reached its peak at 50%) but still held power as it should. I wasn't sure if this was normal for an aftermarket battery, but considering that my OEM battery lasted about three years, I felt disappointed. UPDATE (May 15, 2016): I replaced my hdd with a ssd a few months ago, and now my battery works as good as new after two years. Quite odd, but welcome. So I decided to improve my rating. Will it last as much as my OEM battery? UPDATE (November 3, 2016): Finally its starting to falter. But since I have had this battery for two years and a half, I can say it's almost as good as an OEM battery. Even though it certainly has its issues, it's not a bad product nonetheless. I recommend this product.

Answer:
Positive Review