#Surefire sidekick disassembly series#

In everyday use, IntelliBeam is surprisingly convenient for tasks such as searching for an item in a dark attic. In both of these situations, the output reduction would probably not make a difference in your ability to see, but the tactical disadvantage is a serious consideration for duty carry. This could be indoor lighting or an exposed bulb, or in a tactical situation, someone pointing a flashlight at you. The black plastic tube in front of the IntelliBeam sensor eliminates most interference, but bright sources of light aimed directly at the sensor will cause IntelliBeam to dim unexpectedly. IntelliBeam Technology is an innovative solution to make high-output lights easier to use, but like many forms of automation, there are some limitations. After the first 15 minutes, the P2XIB maintains roughly 70% output until it drops out of regulation. SureFire uses step-down regulation on the P2XIB to achieve a longer and more consistent runtime than the original Fury (500 lumens, released in 2012). If you haven’t read our article about runtime graphs and the ANSI FL1 Standard, please click here. To avoid blinding the user, the light always starts in lowest output and then ramps up to the appropriate brightness quickly. If the amount being reflected back is not enough (for example, when an object is distant), IntelliBeam will increase the output, and when too much light is being reflected back (for example, when an object is close), IntelliBeam will decrease output. IntelliBeam Technology works by using a light sensor to detect the amount of light being reflected back at the light. The beam pattern is smooth and clean like the P2X, except for a slightly darker spot at the edge where the IntelliBeam sensor is. Using a Cree XM-L2 LED, the P2XIB produces a respectable 600 lumens of maximum output and an intensity of 14,700 candela.

Two presses or clicks will activate maximum output. Two output levels can be activated using the tail switch on the P2XIB.Ī single press or click will activate IntelliBeam mode for variable output. To activate the lockout tailcap feature, unscrew the tail cap until the light no longer turns on (about a quarter-turn). On the tail cap are multiple bands of knurling and a forward click switch, which is covered with textured rubber.

#Surefire sidekick disassembly series#

The P2XIB also sees the return of knurling, an improvement over the contoured body of the Fury series that can be slippery to hold. Ridges on the head stop the light from rolling away when set on a flat surface, which works more effectively than the flat areas on the P2X Fury. Towards the edge of the reflector is cutout for the IntelliBeam sensor. The head features an anti-reflective coated glass window and a textured reflector. The aluminum body is type-III anodized for protection against scratches and corrosion. With its length of 5.8”, the P2XIB is close to half an inch longer than the P2X due to the additional components in the head for IntelliBeam. SureFire recommends using only quality lithium batteries from Duracell, Energizer, Panasonic, or SureFire. Lithium batteries have higher energy density than regular batteries, so low-quality or counterfeit batteries can be dangerous to use. Like the original Fury, the P2XIB is powered by two lithium 123A batteries and can also be used with 3.2V rechargeable lithium-phosphate batteries.

Included in the blister packaging are: SureFire P2X Fury with IntelliBeam, 2 x 123A lithium batteries (installed), and user manual. MSRP for the P2XIB is $229, and the light is only available in black. We’ll be taking a detailed look at SureFire’s first automatically-adjusting flashlight, the P2X Fury with IntelliBeam Technology (P2XIB), which has two modes: IntelliBeam variable output from 15 to 600 lumens and maximum output of 600 lumens. SureFire’s IntelliBeam Technology is designed to address this issue by automatically adjusting the light’s output based on your surroundings, and you may be wondering how it works or even how well it works. High-output lights such as the SureFire P2X Fury are great for outdoor use, but using that amount of output indoors can be challenging due to reflections and backscatter from walls or other light-colored surfaces.