Use female Apple lightning connector for charging LiPo
You might find some fancy sellers around the net, but forget to buy something original. To make an Apple product, i.e. that uses Apple parts, you have to be their partner and your device must meet some strict specifications (I swear I've read it somewhere - can't find it anymore).

But hey, no sweat: there's tons of better connectors out there, micro USB is the standard around the world now, and I bet you can rethink your project in order to use something standard instead of something fancy.