I am thinking about getting the smart battery case for my iPhone 6s. I wouldn't be using it all the time, I would only use it when I would need it if I needed some juice and had to go somewhere where I wouldn't be able to plug my phone in. Right now I have a thick otter box type case on my phone and kind of wondering about protection also with that case. Just looking to get some thoughts on the smart battery case from people that use it.