Here is a review left by a customer on a product. Would you say he was satisfied or dissatisfied?
Title: More power
Review: You can never have enough power. The great thing about this is that you have the option of using two Canon NB-2LH Rechargeable Battery Packs (not included) or six AA batteries (also not included). If you're going to be away from electricity and won't be able to recharge your batteries this will give you a way to use your camera with common AA batteries.
