Perfect for my Syma X5C
I purchased these for my Syma X5C and it is perfect.  The only things that come in the package are the 5 batteries, the charger, and the USB cable.  All of the port work, although some of them had bent pins that required straightening, wasn't difficult at all.  The batteries are larger than the 500mAh that came with the copter but they fit very well.  I was able to try each battery out after the initial charge. I did not notice any increased flight time, but I was flying outside in 25 degree weather which might have influenced performance. The charger does charge the 500mAh battery that came with the quadcopter.  Altogether I figure I can now fly for about an hour before I run out of battery.  Very nice with I have my copter away.  I received this product at a discount for a fair and honest review.  Great product.
Rating: 5 stars