1. What does this have to do with Neo900? Please learn to observe the thread's topic. Posting your questions in random threads is generally frown upon.

2. Check your car charger's USB connector. I have three car chargers. All of them work but the connection is rather temperamental. So far I had the best results with the cheapest one from Poundland. which has a USB A female connector instead of a cable sticking out, coupled with a cable that I know works on a PC.