iPhone 4 power users have probably discovered by now that carrying around a power cord is a good idea if they want to make it past the afternoon with a usable phone. As great as the iPhone’s battery is and as optimized as iOS is regarding conserving battery life, it’s still not that great. And, without a user replaceable battery, quick battery swaps with a backup are a no go. But thanks to the folks at Mophie, iPhone users can once again carry on into the...
