It rocks.

Sometimes I forget that it needs to be recharged because I can go for so long before it runs out of juice. To be fair, my commute is less than ten minutes each way, but I can still go for weeks before plugging it in again. I never could do that with my AA-powered Dinotte.

The weight hasn't been a problem. I notice it the most when I'm not using it -- that is, when I take it off of its mounts, my helmet feels properly light again. It does increase the momentum of the helmet when I turn my head quickly, but nothing awful.

The light pattern is fine for where I ride. I'd try to fashion a glare shield if I were using one of the area MUPs to keep from dazzling the other commuters, but at least I can point it out of the way if I need to.

It's a good light. Recommended.