When you have finally decided to purchase s new replacement battery for your laptop, you should make sure that the manufacturer has a reliable reputation. If the battery is manufactured by the manufacturer of the laptop, then you can be sure that the battery will be reliable. However, it might come as a surprise to you that most manufacturers of laptops, even the most reputable ones do not manufacture batteries but have an additional device in order on their behalf. For example, if you openOriginal Sony battery (not recommended), you will find that he produced within cells by Toshiba, Exide or some other battery manufacturer. So in effect you are, in fact, buying third party batteries for your laptop. The third party manufacturers of laptops are also buying their cells from the same manufacturer that the so-called OEM supplies and are a good bet to buy your replacement battery. Besides the lower price you will receive additional benefits, such asoffers as an extended warranty and replacement. A one-year exchange warranty is a must for your replacement battery, so never be satisfied with less.