Purchase LP E6 battery by sold by A1deals proposed by AMAZON to 57.33 (11/2011)
This battery looked like a real ... but completely dead within a year after purchase
Upon reflection, I could realize it at the reception for carton packaging did not correspond to what canon.
Furthermore, in comparison to a "real" battery, there was no production date and lacked certification enrollments. Easy to do with two products under the eyes comparison ...
Real disappointment! Confidence?