This is a fantastic deal on replacement batteries for your camera. On my first full charge out of the box, my camera lasted through two weekend trips--about 300 photos (some with flash) and 25 minutes of video. Very impressive. The second battery proved useful, as I was able to swap it out and continue snapping pics before the end of my trip. The charger is a bit bulky (twice as thick as my last charger for this battery model, thus the nit-picked four star rating), but is small and light enough to stow away in your bag. For the price (up to $60 cheaper than Canon's battery/charger combo), you can't beat this deal. Very highly recommended.