If your Photon Micro-Light (or “Photon 1” as it is sometimes referred to) just doesn’t seem as bright as it once did, it may be time to change the batteries.

Unlike traditional flashlights using alkaline batteries, you won’t see a sharp decline in brightness to signal a dead battery.  Lithium coin-cell batteries have a very flat discharge curve, meaning that as the batteries are depleted you will get a very gradual reduction in brightness over the entire life of the batteries rather than a sudden drop at any point.   Because of this, deciding when the batteries are “dead” and need to be replaced is often a matter of personal preference.  If you find yourself thinking that your light doesn’t seem to be as bright as it once was, it might be time to replace the batteries.  While battery replacement in the Photon I is fairly straight-forward, we are happy to provide assistance if you have any trouble replacing the batteries in your light.

Also, one hint if you’re looking to extend the battery life and don’t need the absolute brightest possible light — Any Photon 1 which normally uses the pair of smaller CR2016 batteries (i.e. White, Blue & UV beams) *can* run on a single CR-2032 battery instead if you wish.  This will reduce the brightness quite a bit, but will greatly increase the run-time.


Photon Micro-Light Battery Replacement Instructions:

Depending on the beam color, your Photon 1 will use either a pair of lithium CR-2016 batteries (White, Blue & UV) or a single CR-2032 lithium battery (Red, Yellow & IR). Replacement with CR-2016 batteries pictured at right.

  1. Photon Micro-Light battery replacement illustrationCarefully remove the cap on the logo side of the Photon Micro-Light using a pointed tool such as a ball point pen or the tip of a nail file.
  2. Replace battery(s) with the plus (+) side up as shown in the illustration.
  3. Close by aligning tab of battery cover and snapping shut.

*For best performance we recommend Energizer brand replacement batteries.

Operational Tips:

  • If the light flickers, gently wipe battery contacts with a soft tissue being careful not to distort their shape. For minor cases, sometimes the mechanical action of simply pressing and releasing the squeeze button several times is enough to eliminate a flicker.
  • In the unlikely event of water penetrating the case, simply open and dry out.