Granted, you can always carry a spare with you, but how about both doubling the battery life of the Note 4, and protecting it from drops and bruises? Mugen is at it again, just introducing one of its extended battery back covers, designed specifically for the Note 4. The Power Battery unit sports a hefty 6640 mAh capacity, essentially doubling the long-distance running abilities of Samsung's newest phablet. As usual, the extended battery pack snaps in the places of your existing back cover, and, just to spice things up, Mugen has also included a built-in kickstand to watch videos in comfort for those endless hours the Note 4 would last with Mugen's creation.
In addition, you get full support for NFC and Qi Wireless Charging with this extended battery case, which would run you US$89.50 directly from Mugen Power Batteries, and can be found in the source link below, if you are in the market for extending your Note 4's battery life.