Hey guys, I have an iPhone 5 bought on launch date here in Denmark, so it's a little over a year old. Lately, my battery life has been very very disappointing. It cannot hold charge throughout the day, and shuts off when it shows about 30% (and if I boot it again, I just get the "Low battery" icon). Also, sometimes it jumps straight from 40% to 20% and then within minutes it shuts off. Unfortunately, it's over one year old, so the warranty is expired (and I don't think there's warranty on "wear" on batteries anyways), so I can't really get it replaced by Apple. Furthermore, we don't have any Apple Stores in Denmark, so I can't even pay for a replacement. So I'm looking at some batteries on eBay that has a good pricetag, and then I'm going to replace it myself. Does anyone have experience with these batteries? Are they reliable? They does indeed look like Apple's original batteries, but I know they're knock-offs.