"Cheap, Chinese and e-bay" mean poor quality or NO quality. But almost everything is made in China today and some products have excellent quality.
On another thread here or on another website forum a guy wanted cheap Lithium batteries. I told him to look on Google to see hundreds of reviews of fakes.
Another person found this video of a cheap, Chinese battery bought on e-bay and it shows what was found inside it:
https://www.youtube.com/watch?feature=player_embedded&v=eOshOXcSkDA