Amazon has a great deal on a great battery pack today. We're looking at Breett's 10,000mAh power bank for just $14.99. Now it's not available with Amazon Prime, but it does have free shipping, which is still a good deal. It's a Powerful 10000mAh external mobile battery charger fits for most digital devices. High-speed 2.1A & 1.0A USB ports to charge two devices at once. Equipped with 4 LED to display power. Quickly and effectively solves the low power problem for your device when travel out. Superb IC short circuit protection ensures its safety. You can grab one today for just $15, which is a helluva deal, in my opinion.