What I want to share is if you get the right product from right seller, generic battery is not worse than original battery, sometimes even better than original one, because most generic batteries have higher capacity than their original peers. You should check specs and warranty very carefully before your purchase, avoid sells who don't provide details (probably they intend to make everything unclear). Check this site, I bought Canon NB-1LH and Nikon battey from them, and they are OK. http://www.ebuybatteries.com.