I bought a 12v 30amp power supply put out by Nitrorcthunder sold through Direct-deals4u on ebay. I've had it since Oct 2013 and used it 6 times since I haven't been flying due to winter. I died yesterday. I contacted the co. and because it's outside the 30 day warranty they will look at it to fix with an estimated cost, without seeing it yet, of $15 - 30. It cost $57 new. If any of you out there have similar stories let everyone know. If you've had good luck with a power supply for your dc charger let us know that also. After my experience with this product I can't recommend it.