Bests & Worsts Reviews from Amazon

I paid $56 for what I thought was an OEM battery (manufactured by Canon). The battery pack I received appeared to be genuine, except for the following characteristics: 1. The battery strength meter in the camera goes from fully charged (all bars) to a flashing red "change battery" icon with no reduction in bars. This is an indicator that the battery pack is not genuine Canon. 2. The battery pack only lasts ~200 pictures with flash (the OEM pack lasts something like 450). 3. The writing on the pack is blurry and not as dark as the OEM battery. 4. The seam of the case on my battery has some warbles at the seam; the OEM battery does not. Caveat Emptor (buyer beware)!