Negative Positive
Title: Lower power knock off...
Review: This battery produces less power (780mAh) compared to the Canon battery at 1120mAh. A 33% difference. This also affects sustained power available to the camera to charge the flash or operate lens motors, and decreases the amount of useful battery life you'll receive.I would get one of these as a back-up, but I would not depend on it one bit. If Canon specifies a 1120mAh battery, they do so because it will work reliably in the camera over its entire temperature range (and over the life of the camera) to give you predictable and reliable performance. Using a lower power battery could cause any number of intermittent, nagging problems (that I've experienced all too much as a photographer.)Buyer beware. :-)
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