Is this normal for the battery percentage to be where it's at given its usage? I feel as though the battery on my iPhone 5C is not holding a strong enough charge. Here's the scope: I got my iphone 5C within a week of it being released and I kept it sealed until about January when I opened it (don't ask me why). Every since then, I feel as though the battery percentage drops more than my iphone 5S. What do you guys think?