Pay attention to the right dealer!

I had at the same time bought this battery as a spare battery with the Canon EOS 600 camera and also caught a black "dealers" Sheep in former ignorance. The battery has simply adopted after several charging cycles. On the Canon dealer website there are clear statements on this issue:

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Unfortunately, I have the page also discovered after the frustrating experience. Care must as far as possible when buying it directly from Amazon to buy as suppliers, or in a known technique the markets. Otherwise, the risk of acquiring a rivet, a relatively high level. True to the experience: "Who buys cheap, buys twice", you save the apparent bargains that can be more expensive in the end, to invest as equal in the original battery!

So pay attention to the right dealer!