Top positive review
160 people found this helpful
Good as "factory" battery in Canon S100
on March 3, 2012
UPDATE to review below, March 15, 2012...now that the factory battery and the STK battery have been charged/discharged a few more times each, I ran a test. Charged each one fully, put it in the Canon S100 camera, took one photo, then left the LCD/photo display "on" til the battery died (you can set this in the camera controls). The LCD brightness was at factory default (mid-brightness). Canon battery lasted 3 hours 40 min. and the STK lasted 3 hours 50 min. Not a scientific test but seems a fair comparison. Despite the higher Mah rating, my STK did not last much longer, but I'm still happy with it for the much lower price than the factory battery, and have ordered another one. (End update).
I've had a Canon S100 for a few weeks now, and bought one of these batteries as a backup at same time I purchased the camera. I've run them through several charge/discharge cycles in normal use by now. In terms of how long they last, I can't see any noticeable difference between this battery and the Canon-brand battery (if this battery really delivers 1400mah vs. the Canon's stated 1120mah, it is not obvious in use.) This echoes my experience buying off-brand batteries for Nikon, Panasonic and Pentax cameras over the past few years...I've never had a bad experience though I know others have sometimes reported issues. There may be some advantage to not buying the absolute cheapest version of an off-brand battery, and looking at the reviews of other genuine users is a good idea, but saving $20. or more off the cost of the factory battery is worth some reliability risk to me. If I encounter problems later with this STK battery I will report again.