Instructions: In this task, you're given a review from Amazon. Your task is to generate a rating for the product on a scale of 1-5 based on the review. The rating means 1: extremely poor, 2: poor, 3: neutral, 4: good, 5: extremely good.
Input: Knowing how to use a product is always important in order to get the most of it. This battery used properly on the right power savings settings is lasting me about 3 hours or so. Also consider that different laptops have apps and programs running in the background draining the battery, you have to optimize your system to get the best use of your battery power. Considering that is a replacement product with a good price in comparison to paying over $100 for the actual factory battery, this battery is great for the value. Before posting negative things I encourage everyone to set it up properly and it will do its job.
Output:
4