Great lamp, and oddly enough I am using it for macro shoots when I am using a bellows. Works flawlessly! I bought this about 2 years ago and I didn't use it much for the first few months. I made the mistake of not disconnecting the battery before putting it away and the next time I went to use it it wouldn't charge. I went on youtube and watched a video titled "WB400p Battery Reset" and after about 30 minutes It was charging again. Lesson learned, I won't leave the battery connected to the flash when I am not using it and I will periodically make sure I charge it. Overall very happy with my purchase.