I put my Cannon BP-808 battery on my cannon vixia hf11 HD camcorder, plug in my factory given charger to the camera, and charge it. It flashes as if its charging but when I turn it on, it's completely dead. I also have charged it on a seperate cannon hf11, and used three different chargers, so its not the camera or the chargers. I also have cannon BP-827 battery pack(extentended life $200-300 battery) and it does the same thing, so its not the battery pack. I can't find anything to help me on the internethelp?
If it's not the battery pack, make sure the charger is not causing any problems, I would check and clean all the metal connection, and those small copper sides of the charger where the battery connects to.Do the same for the battery holder in your camera and and clean that spot all the way. If it's not the battery pack nor the charger, there got to be something wrong with the camera itself. Take it to geek squad in best buy or call the manufacturer warranty service if it's still under warranty cover. Hope it helps!