The canon lc e10 is a battery charger which is compatible with the eos 1100d digital slr cameras the canon bp 511a is a rechargeable lithium ion battery pack which is compatible with eos 5d 50d 40d 30d amp 300d digital slr cameras batteries provide the best power for your digital camerathe batteries for all current eos models make use of lithium ion technology this provides longer battery life and does not suffer from a memory effect they also hold their charge well when not used for long peri