I purchased a Cateye rechargeable blinky (2 actually, one to give away), and used it for the first time yesterday. It replaced a Giant light w/ 2 AAA batteries @ 64 grams that works pretty well.

The day was grey and wet, so I put the light on at the start of the ride, not flashing so as to be less annoying to others in the group.

Half way through the ride, the battery had run down & the light was off.

It's bright & all, but what good is a light that will be dead when you need it?

Why such a short run time, when a regular blinky with a watch battery lasts for a year, & the AAA light will probably go all winter.

End rant.