UPDATE YEAR 4: Fantastic Product! My NiteRider 1100 is still as solid as new. Using & charging 5 nights a week, 2 hours per ride, it still holds nearly 90% of its original battery power.Power 3, which is the high power is so bright that I avoid using it unless on a road with few to no vehicles. The ultra bright beam upsets drivers, which I avoid at all costs, so I use always on Power 1, which gives me around 6.5 hours on a fresh charge or Power 2, with just over 2 hours of charge.-> My 5-Star recommendation stands strongMy extensive review reflects the importance of riding with the proper headlight when cycling at night and this is the #1 on my safety riding gear, tied along with my helmet. The NiteRider Lumina 1100 Headlight is a fantastic piece of engineered hardware fitted into one of the most durable and compact sizes available. The unit feels (and is) expensive with a near-bulletproof housing that is watertight and a delight to operate, turn on and off, snap off to recharge and snap back on. The many light modes will satisfy all cyclers including those who mistakingly use the DFL Daylight Flashing Light to ride at night. The OLED display screen is clear, always legible, bright and the information displayed is fairly accurate, specially the ride time (realtime battery).My cycling is always nighttime and prior to the NiteRider, I used 2 other rechargeable headlights. It was only when using my NiteRider that I confirmed how bad, how lousy the other headlights performed. At over 1.5 hours, my rides are long and a great headlight is critical. The NitRider is a life saver not only because you can NOW clearly see what's ahead of you 150 feet or more, but because others will always see you on the highway. The 6000k LED bulb and its multi-reflective housing produces a very bright, crisp beam the will cover over 1/2 of the highway lane, depending on how you direct it.Ride time battery life is good and I wish it was better. Since my night riding exceeds 1:30 hour, I have to use the NiteRider's mid-level brightness which when powered up, offers me 3:00 hours of excellent lighting. Although I'd like to use the full 1,100 lumens brightness, that would offer me about 1:05 hours, not enough for my ride. Recharging the NiteRider takes quite a while and going from 35% remaining battery to 100% takes about 2.5 hours on a powerful 24w charger or more than 3.5 hours on a smaller one.My most important criticism goes to the handlebar strap mount whose quality is lacking and definately not on par with the headlight unit. Although it's very easy to remove and reinstall the NiteRider onto its mount, it feels and is flimsy, often times moving, rotating the headlight off position when handling it.NOTE: My first NiteRider Lumina 1100 was defective not holding charge and within a few days from purchase had to be returned for replacement. NiteRider's Tech support was excellent, always available, they did some troubleshooting and immediately recommended the replacement.My wish for all nighttime cyclers is that you PLEASE use the correct solid headlight beam when you're on the highway and STOP using the DFL Daylight Flashing Light to ride at night which is dangerous. The headlight flashing strobe effect endangers fellow riders and oncoming drivers.