I have tried a few replacement battery and so far none of them is still able in terms of performance even close to the originals rich water, except this one! The battery comes with a good packaging and detailed instructions on how to maintain the battery properly (in English). With this battery, I have about 240 shots and a 1 min on a trip. Video taken with my Canon EOS M. Here, the LCD brightness is always set to Max because of the sun and many times I've played around in the settings, because the camera is still new. If I had the monitor brightness by default set to medium and less playing around with the settings, then the battery life would certainly be higher also good stuff. So all in this battery is the original battery par with, or even better in the battery performance. Charging with the original charger works without problems and the price is truly amazing. I can make at this time no statement about the long-term durability, but one has also 2-year warranty. So I would buy this battery anytime. If I even noticed what the passage of time, I will report here of course.