Top critical review
They work but the build quality sucks...
on April 27, 2014
These are genuine Syma parts, and fit the X1 copter I purchased They do work, but the build quality is lousy. One of the two I got didn't have the top (black/red) part fitted properly, so it was a little crooked. It works, but I'm hesitate to carry these batteries in my pocket for fear of a fire, based on the build quality. They last 8-10 minutes in the copter.