You have asked a question that no one is qualified to answer.

All of the no-name replacement batteries are made in China.
And China's battery products are known for inconsistency.
i.e. all of those laptop batteries that are being recalled are from China. Some of those batteries caught on fire.

Panasonic recently announced that all of their future cameras will include (in the firmware) a method of recognizing a Panasonic battery.
If a non-Panasonic battery is installed, the camera will refuse to function with it. Panasonic says they are doing this to prevent law suits from people using defective batteries.

Canon is showing signs of doing the same thing.