I buy all my batteries and chargers off ebay, not just for my phone but also cameras, laptops and other things. You can stock up with half a dozen or more batteries and chargers for the price of one Seidio. I have them everywhere for my DInc, in my desk, briefcase, car, golf bag, mom's house, etc. Stick with a seller with a ton of feedback and you will be fine. I've never had a problem with any of the batteries or chargers, nor have I ever had anything damage any of the electronics. Stuff is all coming out of the same factories over there...