By and large, my runtime observations line up well with Fenix’s claims. Note that once the output dropped down to its lowest level (around 64 lumens), it kept chugging along for hours and hours until I finally stopped the tests. Peak beam intensity and beam distance measurements About Peak beam intensity: Understanding ANSI FL1 Standards About peak beam intensity The calculated value of distance in meters at which the flashlight produces a light intensity of 0.25 lux. (0.25 lux is about the brightness of a full moon shining on an object). This means that the intensity has decreased so much, it becomes difficult to see darker objects, or objects that don’t reflect light. The columns ‘Meters’ and ‘Yards’ use rounded numbers.

Two buttons are located on the body of the torch with the left hand flood button controlling flood outputs as well as strobe and SOS, while the right hand spot button controls the spotlight outputs. Press and hold the floodlight button for 0.5 seconds to turn the light on and then each press will cycle through low, mid, high I, high II and turbo. Press and hold the spotlight button for 0.5 seconds to turn the light on and then each press will cycle through eco, low, mid and high. Press and hold the floodlight button for 1.2 seconds in any state to access the strobe, then single press to change to SOS and press once more to return to the previously used setting. The Luminus SFT70 LED provides a spotlight than can reach up to 900 metres with a maximum output of 3000 lumens in the high setting. Surrounding the central LED are 16 Lumiled HL2X LED's that provide flood lighting with a maximum output of 12000 lumens and a beam range of 340 metres on the turbo setting. Press and hold the floodlight switch for 0.5 seconds to turn the floodlight on or press and hold the spotlight switch for 0.5 seconds to turn on the spotlight. Repeat this action to turn off either the flood or spotlight. According to the fast charging protocol, QC, PE or 5V discharging will be selected, if load fast charging protocol will be auto detected. With the light switched on, press and hold the spotlight switch for 1.2 seconds to simultaneously turn off both modes. Mode Switching

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The light and the included charging cable support QC2.0, PD2.0 fast charging protocols.The normal charging time is approximately 4 hours from depletion to full charging. The Spotlight beam is nice and tight, thanks to the larger reflector and the domeless LED. The Floodlight mode is really broad, as you’d expect from this LED arrangement in tiny reflectors. On floodlight mode, press and hold the floodlight switch for 0.5 seconds to turn off floodlight mode. A.Yes, the light is internally waterproof and is thus still waterproof without the port cover in place. To avoid overheating the temperature protection in the torch will lower the output of the torch if the temperature reaches 60°C using high output modes.

With a high capacity 10.8V 5000 mAh battery, (equivalent to 3.7v 15000 mAh) LR40R V2.0 can maintain a beam distance of over 650m continuously for up to 3 hours. With the light switched on High I, High II or Turbo on Floodlight mode, the light will accumulate a lot of heat for extended periods. When the light reaches a temperature of 65℃ or above: The Fenix LR40R is a high performance rechargeable searchlight that delivers a maximum output of 12000 lumens and a beam range of 773 when the separate flood light and spot light are combined. Fenix LR40R V2.0 is a powerful, compact rechargeable LED searchlight designed for rescue teams and outdoor activities requiring both long distance illumination and broad floodlight output in the same compact light. When on, press and hold the side switch for 10 seconds to enter and exit the intelligent brightness downshifting sensor.When the voltage level drops below the preset level, the flashlight is programmed to downshift to a lower brightness level until Eco output is reached. When this happens in Eco output mode, the battery level indicator blinks blue to remind you to recharge or replace the battery. To ensure normal use, the flashlight will not turn off automatically and will work until the battery level runs out or the protection circuit activates.

When using the rotary switch and moving to Floodlight (3rd position) or Spot + Flood (4th position), it will come on in the memorized mode Long-term use can result in O-ring wear. To maintain a proper water seal, replace the ring with an approved spare.There is also an “intelligent brightness downshifting sensor” that automatically lowers the output if something comes close to the lens (around 60mm) for more than 1.5 sec

Up front with the LEDs, you might notice a couple extra bits in the reflector. Those are part of the “intelligent brightness downshifting sensor”. That’s a handy feature in day-to-day usage, but a little annoying for testing. Thankfully that functionality can be disabled. The light features 3 individual modes controlled by a rotary toggle switch. These are: Distance beam, floodlight beam, and combined distance / floodlight beam. Simply rotate the toggle switch to the required mode to select it, then use the central push button to cycle brightness levels. Holding the button down for 1.2 seconds on any mode will activate mode 4, Strobe and SOS.Maximum beam distance 640 meters (spotlight) or 410 meters (floodlight), waterproof to IP68 and resistant to impacts up to 1 meter. Holding the flood button for 0.5 seconds will turn the flood light off and holding the spot button for 0.5 seconds will turn the spot light off. If both spot and flood are on, press and hold the spot for 1.2 seconds to turn both lights off together. The last used setting will be remembered next time the light is turned on. Spot and floodlight both switched on (High output on Spotlight mode), the light will downshift to 1000 lumens;