Love these bike lights, great value for the money. We ride infrequently and haven't had to recharge since we purchased them several months ago. Easy to install although the mount is quite firm (good for a secure hold when you hit a bump) -- my wife has a little trouble getting them in and out of their mount and often asks me to assist.) We enjoy the adjustable beam and the evenness is perfect -- no hot spot. It's a good idea when installing to be sure these aren't pointed out ahead where they will blind people. Have someone assist you and point them down at the ground to avoid annoyed & blinded drivers and pedestrians.