PBSF Turbo v1 & v2

On the left is a PBSF-T v1. On the right is a v2. Note that the bottom right battery terminals are different. The v1 uses a spring made of bent metal, the v2 uses a coil-spring.

 

The newer v2 spring makes the positive battery terminal less likely to lose contact going over bumps. But who cares about that...? The newer circuitry of the v2 is the real improvement.

 

When the v2 is on, and it loses power for a brief time (15+ seconds, based on my testing) it will turn back on in flash-mode. This means that if the light is on and you hit a bump big enough to disconnect the batteries from the contacts, it will come back on, blinking. The v1 will stay off, and you won't know that it's off because it's behind you.

 

I'm told that the v2 also sets itself to flash when the batteries are low. This extends battery life, and lets you know it's time for fresh batteries.

 

To test if the circuitry is a v2:

* Remove the back cover

* Turn on the light

* While the light is on, remove one of the batteries for a second or two

* Re-insert the battery

* If the light starts flashing as soon as the battery is back in, it's a v2

* If the light stays off after the battery is back in, it's a v1

 

Done