I purchased a charger from Charger Buy and after a couple months the tip became loose and didn't stay in place. I emailed customer service and asked if it was still under warranty to exchange for another one. I then decided to just purchase another one as I needed one asap. I received a return email saying that they would refund the price of the new one I ordered. I emailed them when I received the new one and they immediately issued a refund. The new one is working great. I recommend chargerbuy.com to anyone for the best prices and service anywhere! Great prices, fast shipping, great customer service.