A:AnswerNo internal storage means nothing will be saved to the camera. You must use a sandisk in order to save pictures/videos. There will be a small lock/unlock switch on the disk that will allow you to either save the info on the disk or delete it
A:AnswerI do not know, but I suggest you ask the people at Best Buy to help you. After all if they sold you this camera, they should be able to provide you with this information as to how you can locate a compatible battery. Even if they don't sell it, they should be able to help you locate one. This is just considered good customer service, which I don't believe Best Buy offers!
A:AnswerIt really depends on how many photos and videos you take. I believe it holds over 2000 photos. I personally have a 64gb which is plenty of space for me.