I bought a Defender at (...). It rocked for about ten minutes, then it wouldn't charge. So I got new batteries...Nothing. I exchanged it for a blue Defender, it worked for about three hours than the up button on the controller stopped working. So I exchanged it... Again. It worked for a couple of hours and stopped charging. I got new batteries again, and still, nothing. I turned out 0 for 3. If you want to go return a plane twice a day, I reccomend this, otherwise, get the Resistor for $14 more. Thats what I did, and the Resistor worked.