The Portland Design Works RADBOT 1000 Taillight is an excellent product and one of the brightest bicycle taillights you will find. While most people think taillights are only for when they ride at night, the RADBOT’s 1-watt LED light is powerful enough for daylight use as well. This taillight offers three different flash patterns: always on, zZz, and my favorite, the cornea blitz (also known as zZzPOP). The RADBOT 1000 comes with clips so you can mount it to your backpack, seat bag, seatpost, or seat stay.
Portland Design Works claims this light will run for 15 hours in steady mode and up to 30 hours in flashing mode. This has not been my experience, but I don’t think anyone actually gets the battery life that most manufacturers claim. However, this does not mean they are trying to mislead you. Battery life is dependent on many factors, including the age of the battery, how it has been stored and weather conditions. While I have never been able to get 30 hours of flash time out of a set of batters with this light, I am not the least bit disappointed. The RADBOT 1000 is an extremely powerful taillight and I think my life is worth considerably more than the price of a set of batteries (your opinion may vary). By the way, I never run a taillight in the solid (always on) mode—I’ve found the flashing light pattern to be far more effective.
I bought two RADBOT 1000 taillights over 18 months ago and they are both still going strong, even after a couple dozen sets of batteries and a really bad Chicago winter.
Any review of the RADBOT 1000 would not be complete with a mention of it’s main competition, the Planet Bike Superflash Turbo Taillight. Both of these lights are made by excellent companies and I honestly could not claim that one is better than the other. I’m sure you have heard of Murphy’s Law (“Anything that can go wrong will go wrong”). In my opinion Murphy was a flaming optimist. Riding with only one taillight will eventually mean a ride home with no taillight at all. Batteries run down, mounting brackets break, and a taillight is probably the easiest thing for someone to steal from your bike. I use both of these lights on nearly every ride I take at night. Since the Planet Bike Superflash is fairly lightweight I attach it to my seat bag. The RADBOT 1000 has a great built-in reflector and I keep it on the seatpost. Because these two lights use different flash patterns it really makes it easy for motorists to see you a long way off.
The RADBOT 1000 retails for $32. Portland Design Works guarantees their products for life against defects. Their Website has a rather humorous explanation of what constitutes a defect, i.e., “Defect does not include damage caused by a drunken bicycle crash, ghost riding your bike off a bridge, act of God or normal wear and tear.”