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When batteries run low out on tail lights - what happens?

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When batteries run low out on tail lights - what happens?

Old 10-05-11, 06:13 AM
  #26  
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My PBSF dims as the batteries get low. I use rechargeable batteries and carry a spare set of AAAs in my seatbag because they are so light weight, however, the batteries seem to last forever on a charge.
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Old 10-07-11, 10:42 PM
  #27  
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Originally Posted by Richard Cranium View Post
I wonder if Dinotte has voltage/current regulation in their tail lights. I would imagine they do -same as head lights.
They do. And when they hit the low threshold they revert to a dim steady on.
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Old 10-08-11, 03:36 AM
  #28  
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Originally Posted by CCrew View Post
They do. And when they hit the low threshold they revert to a dim steady on.
My 300R slowly flashes when the battery is running low, then shortly after it completely shuts off.
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Old 10-09-11, 07:21 PM
  #29  
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Radbot 1000 shuts off

In a slightly paradoxical warning system, the Radbot 1000 shuts off when the batteries are getting low. So if you get home and it's no longer flashing, you know it's time for new batteries. I just run an old PBSF as a backup on the seatstay. I have to reming myself to get another Radbot 1000. Unlike PBSF, it's waterproof.
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Old 10-10-11, 08:24 PM
  #30  
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Originally Posted by willtsmith_nwi View Post
In a slightly paradoxical warning system, the Radbot 1000 shuts off when the batteries are getting low. So if you get home and it's no longer flashing, you know it's time for new batteries. I just run an old PBSF as a backup on the seatstay. I have to reming myself to get another Radbot 1000. Unlike PBSF, it's waterproof.
see post 2
Also the space between the LED on the board, and the plastic lens around it does not look any better sealed than the PBSF. Did you test the waterproof aspect of the Radbot?
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Old 10-10-11, 09:14 PM
  #31  
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I think or judge by my experience in our daily life, it should be getting dimmer, and it is also a visualized hint of lacking power.
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Old 10-10-11, 09:31 PM
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I'm sure I'll be finding out soon enough for myself. I just acquired a B&M 4D Toplight Permanent from another BF member. It's by far the brightest of my three rear lights, but even when the light fails, it will still offer some protection due to it being a big honking reflector.
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Old 10-11-11, 03:50 AM
  #33  
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Originally Posted by 2manybikes View Post
see post 2
Also the space between the LED on the board, and the plastic lens around it does not look any better sealed than the PBSF. Did you test the waterproof aspect of the Radbot?
Field testing. I've gone out with both taillights in wet snow. I've had the Radbot 1000 go straight through while the PBSF was infiltrated with water and needed to be taken apart to dry.

The difference is that the Radbot has a pinch screw that secures the two halves together. You can tighten the two halves against the gasket.

Do remember the guys who started Portland Design Works came from Planet Bike. So likely they are keenly aware of the PBSF achilles heel and designed it
out of their own offering.

I'm eagerly awaiting a Radbot 1500, or a self contained rechargeable model.
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