Right now, Poweradd Pilot X2 7800mAh battery pack is on sale for $21.99, which is a pretty good deal considering it's normally $69.99. But if you use a coupon code like this one YH3PPB8Y you'll get an extra $4 off your purchase. There are also a few other coupon codes for the higher capacity battery packs, which you can check out Amazon's listing for more on that. The Poweradd Pilot X2 has two-USB ports so you are able to charge two devices at once, also an LED indicator, and it does up to 500 charge cycles, which is typical for most batteries. You can grab it from the link down below, it's a great battery pack, and you can never have enough of these.
Poweraddâ„¢ Pilot X2 7800mAh Dual-Port Portable Charger Backup External Battery Power Pack with LED Flashlight for iPhone 5S, 5C, 5, 4S, 4, iPad Mini Renita, iPads, iPods (Apple Adapters Not Included), Samsung Galaxy S5 S4, S3, S2, Note 3, Note 2 and Other Android Smart Phones, Touch Screen Tablets, Gopro Cameras, PS Vita and More Other Devices