NIkon coolpix s9

The battery is sealed extremely well because it's lithium ion, dry it with a towel and charge it in the charger no problem I'm sure. The camera will need to come apart, it has moving parts and even if you could use compressed air (which is not always a good idea because static can fry chips from air rushing by if the air is warm enough) you would still have to get any particles of junk out of there. Get a magnifying glass, a complete jewelers screwdriver set (you may need a small flathead for something), and a cold can of compressed air from office depot or walmart. Your can temp should be about 50 to 60 degrees. Too cold and it will cause metal in the camera to condense water, too hot and the static electricity might fry a chip. Use short bursts. Make lens open and close with the battery in while it's apart to test it if you can. I've not had this apart myself but have had cell phones apart a few times.