With the Image Detail Boost feature in the "on" position I can only report what I observed with my Pulsar Accolade XP50 LRF (before I sold it ...). As for the battery life, I only found empirically that it had gone from about 6.5 hours to about 5.5 hours. With a decrease in duration of about 15%. As for heating the device, I can only give an impression of perception. It seemed to me that the device warmed up a little more than normal. As for the detail of the functioning of the Image Detail Boost function, I think it consists in the activation of a very sophisticated software that optimizes the sensor performance. I've seen something similar, but at a much higher level, trying the Russian thermal riflescope Dedal 380 Hunter at night. It only has 384x288 pixels, but you can see incredible details! You could see the hair on the body of the deer that was in the middle of the lawn at 100 yards. A precision and a detail of the fantastic image. And it all depends on military-derived software. On the official Russian website of Dedal there is an interesting physical explanation on the functioning of night observation devices:
"ABOUT THERMAL VISION
Every object having a temperature above the absolute zero (- 273.2 ° C) emits electromagnetic waves in the infrared range. According to the laws of physics, the intensity of thermal emission is proportional to the fourth power of the temperature of the heated object. Consequently, the detection ability of heated objects ’emission by receivers sensitive in the infrared range depends mainly on the temperature of the object and its surrounding background. It does not depend practically on the illumination level in the visible range.
Infrared emission occupies an extensive part of the spectrum, which is commonly divided into several ranges.
A commonly accepted division of infrared emission into ranges is connected with both sensitivity ranges of existing receivers and atmospheric transparency windows.
A night vision device works in visible and close infrared ranges (wavelengths from 0.4 to 1.0 microns) thanks to the detection of natural and artificial light reflected from observed objects.
100% atmospheric transparency
NV Night Vision Devices
0.4 - 1 µm
NIR Near-infrared
0.75 - 1.4 µm
SWIR Short-wavelength infrared
1.4 - 2.9 µm
MWIR Mid-wavelength infrared
3 - 6 µm
LWIR Long-wavelength infrared
7.4 - 14 µm
Modern compact thermal vision devices work in the range from 8 to 14 microns that corresponds to one of several atmospheric transparency windows. The action principle of thermal vision devices is based on the ability of certain materials to register object images formed by infrared emissions and transform them into electrical signals. Received electrical signals that are determined by the thermal scene of observed terrain are transferred onto the built-in microdisplay after amplification and software processing. The display transforms these signals into a picture of the observed objects that is visible to the human eye."