[QUOTE=Onebyone;7780940]How easy is it to change the battery? And how long is the battery life? I have read many cons about the battery life of these.[/QUOT]
Not sure what the battery life is - just got it and started using it yesterday. As far as the ease of changing - it is just like a flashlight. Unscrew the end and place three batteries (they were supplied with the laser light) in, screw end back on and you are in business.