This is an easy-to-hold (with hand strap) all-in-one phone/external-battery-pack combo for playing Ingress without power worries. The phone snaps out easily (just like removing it from the Otterbox belt clip) when you don't need the battery. This clamps an Anker Astro E3 battery to the back of an iPhone 6 Plus in an Otterbox Defender series case. It is a remix of my iPhone 4/5 ingress pack (http://www.thingiverse.com/thing:593818) modified to accommodate an iPhone 6 Plus. The iPhone/battery combination can be snapped into the original Otterbox belt clip, however (unlike the iPhone 4/5 belt clip) it requires removing a little plastic from the holster to make the two indentations a little deeper to allow clearance for the "hooks" (see photos). I used a Dremel grinding wheel; you don't have to remove much; about 2mm. I use a 12-inch velcro "cable tie" for a hand strap; it fits through the slot in the main clip. See the remix things for more information, such as battery and lightning cable details/links.The main clip needs to print with support. There are two versions; each with the logo of one of the factions. Choose wisely... Even with the "ears" on the battery bracket part, I still had one end start lifting off the build plate part way through printing. For the second print, I dabbed some acetone on the ears' perimeter with a Qtip to make sure they stuck to the print bed; that did the trick. The "button" part is optional; it snaps into (the battery side of) the battery bracket; it should be loose, but not fall out; it allows pressing the battery's status button while mounted in the clip.