PowerSkin PoP’n 3 Attachable Battery for iPhone 6 / 6 Plus

Meet the PowerSkin PoP’n 3: an attachable battery that gives your smartphone up to a 150% additional charge. You just have to stick it to the back of your phone, plug it in, and you are set. The device is designed to attach to most smooth surfaced phones and cases. It also has a built-in cable to charge your phone when you are on the go.

PoP’n 3 relies on a dual suction adhering technology to stick right onto the back of your smartphone. It does not get in your way but keeps your phone running for a longer period of time and offers hardware/software safety protection mechanisms. You can get yours for under $55.