This is the second Lezyne light i have bought. The battery died on the first one near the end of its second winters use. I bought this as a replacement. The light is good, the max brightness is very good and will light up the darkest of lanes. The battery life is no where near what is advertised. Expect about 4 hours at best at 250 lumens rather than 6. When i contacted Lezyne about the poor battery performance they told me it was because i was using the light during cold weather and that it would perform better in the summer! Spoiler Alert - it doesn't.