Samsung's Galaxy S3 may have conquered the smartphone market with its robust features, but that isn't stopping the Korean company from adding to its consumer attractiveness. Samsung has now released an extended battery kit for its best-selling flagship phone, which will increase the battery capacity to 3,000mAh.

The Galaxy S3 currently packs in a powerful 2,100mAh battery, which supports up to 10.8 hours of usage on 3G. Even though the device has an exceptional battery performance, it seems fans want more out of the smartphone and Samsung seems to be obliging.

The new 3,000mAh extended battery by Samsung will give users an additional 900mAh power when compared to the original one that comes with the Galaxy S3. By purchasing this battery, the Galaxy S3's battery will be almost at par with the 3,100mAh one that fuels the Galaxy Note 2 phablet.

A major drawback is that users will need to sacrifice size in favor of power as the extended battery will undoubtedly add some bulk to the Galaxy S3. However, on the brighter side, users will be able to go through an entire day despite heavy usage of the smartphone and would not need to charge the Galaxy S3.

What's more, even though extended batteries are available from third-party makers the battery door does not come with NFC contact points in most cases. By contrast, the official offering from Samsung will have NFC contact points that are required for using NFC unlike third-party options. The battery kit also ships with a replacement back cover.

"As this battery is bigger in capacity than the standard one, it is also bigger in size. To accommodate this, the battery comes with a specially built replacement back cover that houses the battery, while also offering additional protection to the back of your phone from scratches and scrapes," notes the product description.

However, at $65, the extended battery kit is not exactly inexpensive, especially considering alternate third-party offerings of the standard 2,100mAh, which can be purchased for as little as $10 via Amazon.

The 3,000mAh battery kit is available in two color options - blue and white. The battery kit can be pre-ordered for £39.99 (approximately $65, inclusive of taxes) from retailer MobileFun. Per an Android Authority report, the battery will start shipping in eight weeks.