Have after much back and forth the LiteXpress LED Upgrade Module - ordered 180 lumens for Maglite. I'm totally excited about the part. Excellent light output and a very good focus. Better than me conventional krypton bulb, no dark spot in the middle. I had the opportunity the Maglite with LED - compare Lenser flashlight, the Maglite with the luminous efficiency is just as bright, and the focus of the LED - Lenser surpasses. For battery drain, I can not make any comments. Conclusion: highly recommended