The Samsung Galaxy Note 3 is expected to debut early next month on Sept. 4 and its battery is quite impressive according to a new leak.

Leaks, rumors and speculations are commonplace ahead of big announcements and the upcoming Samsung Galaxy Note 3 is no exception, as one of its essential specs just leaked online.

If this leak proves to be true, the Samsung Galaxy Note 3 battery will be yet another reason for phablet fans to pick up this device. Samsung's Galaxy Note family proved to be very popular for several reasons, including its long battery life. Last year's Galaxy Note 2 packed a 3,100 mAh battery and owners praised how long it lasts on a single charge considering the massive display it has to power.

Samsung apparently bumped up the battery spec in its upcoming Galaxy Note 3, packing an even more powerful 3,450 mAh unit.

"While we are still waiting patiently for the September 4^th introduction of the Samsung Galaxy Note III, one of the specs of the device has been leaked to us by a person who says he has just seen the engineering sample of the phablet first hand," reports Phone Arena. "And according to our source, the Samsung Galaxy Note III will feature a 3450mAh cell inside, powering the device."

The next-generation Galaxy Note phablet is expected to sport a large 5.7-inch display and the larger the screen, the more juice the device needs. A 3,450 mAh battery should keep things running for plenty of time between charges.

While Samsung may have created the "phablet" market, it now has some tough competition such as the Sony Xperia Z Ultra and the upcoming HTC One Max. If the next-generation Galaxy Note packs a 3,450 mAh battery, however, it will have a great advantage over its competitors. By comparison, the Sony Xperia Z Ultra packs a 3,000 mAh battery, the same capacity as that rumored for the unannounced HTC One Max.

If this leak proves to be accurate, it would also mark the largest-capacity battery Samsung has packed in a smartphone so far. Until now, the Samsung Galaxy Mega 6.3 boasted the largest battery at 3,200 mAh.

The Samsung Galaxy Note 3 is expected to launch with Android 4.3 Jelly Bean on board and pack either a Snapdragon 800 or a Samsung Exynos 5420 processor under the hood, along with 3GB of RAM.

Despite heated competition from Sony and HTC, the Samsung Galaxy Note 3 is still one of the most anticipated devices of this year. The larger battery should make it even more popular.