Press the tail switch gently for momentary-on lighting or until it clicks to activate and lock the PD25. Press again to turn the light off.
With the light on, press the side switch to cycle through four different brightness levels from Turbo → Low → Mid → High.
Press the side switch and hold it for 0.8 seconds to enter into Strobe mode. When the flashlight is in strobe mode, a single press on the side switch will return the light to general lighting mode.
Intelligent Memory Circuit
The Fenix PD25 memorizes the last brightness level used in the general mode, but it will not remember the strobe mode. The next time you turn the flashlight on, it will activate the last brightness level you selected.
PD25 will accumulate a lot of heat when it is working in Turbo output. To avoid overheating, the flashlight will automatically transfer into the high brightness level by working in Turbo output for over 5 minutes. If the Turbo output is needed continually, just reset it again.
Low-voltage Warning Function
When the voltage level drops below the preset level, the PD25 is programmed to downshift to a lower brightness level. When this happens in Low output mode, the flashlight blinks three times every five minutes to remind you to replace the battery. Note: The function only works when the light is powered by 16340 rechargeable Li-ion battery. If the voltage of the 16340 battery drops below 3V, this function will be invalid when the light is turned off and then on again.
Unscrew the light head to put in the battery with the anode (+) toward the light head, then align the threads and screw the light head back on.
Usage and Maintenance
- Please don't disassemble the sealed head, doing so can cause damage to the flashlight and will void the warranty.
- We recommend the use of high quality battery. If the flashlight is not to be used for an extended period, remove the battery, or the flashlight could be damaged by electrolyte leakage or battery explosion.
- Unscrew the tail cap one-half turn or take out the battery to prevent accidental activation during storage or transport.
- The O-ring may be worn out after using for a long time. If this happens, please replace the O-ring with a new one to keep the flashlight properly sealed against water.
- Please clean the contacts of your light from time to time, especially if the light flickers or doesn't light up. There may be several reasons for a flickering or not working light: Reason A: The battery needs replacing. Solution: Replace the battery (Please confirm the correct orientation of positive and negative ends). Reason B: The threads, PCB board contact or other contacts are dirty. Solution: Clean the contact points with an alcohol soaked cotton swab.
If the above methods don't work, please refer to the warranty policy. Notice: The routine cleaning video can be watched and downloaded through Fenix official website, please click the service channel->“maintenance for light”.
The PD25 is a high-intensity lighting device capable of causing eye damage. Avoid shining the light directly into anyone’s eyes.