As an outdoor enthusiast, a flashlight is an indispensable lighting equipment. In the mountains or in unfamiliar places at night, people’s sense of security and confidence comes from the light, and it is positively related to its brightness and the distance of the illumination. Clear vision, transparent , which all comes from a flashlight that can be easily operated with one hand.

This flashlight is Manker’s new SBT90.2 lamp bead version, a portable high-light flashlight with a new catheter lens and compatible discharge function – U22III.

When I mention Manke, the first thing that comes to my mind is the phrase “Zhao Keman Hu Ying, Wu Gooseshuang Xueming”. , with a unique sense of design and powerful performance, just like a maverick.

Climbing with this flashlight at night during the May Day holiday is indeed in line with the positioning of small stature, high brightness and strong performance. I will write an article to introduce it, hereinafter referred to as “U22III”. There is also a PM1 lamp bead version of the same model of U22III. This article introduces the 90.2 lamp bead version, which will not be explained below.

Taking into account the far and wide, tearing through the darkness

The MK34II I bought before is a high-light-pass, pure floodlight flashlight. Since I bought the U22III concentrating flashlight, I don’t need to worry about the choice of focusing and floodlighting. Anyway, both flashlights are small and portable. Take it out with you and you’re done.

Under the background of MK34II’s powerful luminous flux of 26,000 lumens, U22III also has a clear and comparable brightness effect, coupled with U22III’s light-gathering ability of 5,000 lumens of luminous flux, the central light intensity can exceed 220,000 Candela, the visual brightness of lighting for distant objects , does not lose the close-range effect of MK34II.

The light column of U22III has good convergence, you can see the inner and outer layers, and the opening angle is about 3°, which ensures good light convergence and will not diverge even far away.

The brightness of the two layers can be seen from the light spot on the opposite wall. The main light spot in the center has concentrated brightness, the diameter of the secondary light spot in the outer layer is about 3 times that of the main light spot, and the outermost layer has auxiliary lighting with lower brightness. But the flare does have a black center at close range, and disappears when the distance is more than 50 cm.

Thanks to the large luminous flux and the new light guide design, the U22III is actually a lighting device that can take into account both the high beam and the floodlight. The shooting angle can cover people’s field of vision, and it also has good brightness at close range.

U22III has a very good paving effect. When used outdoors, it is transparent from far and near and has considerable brightness. It is indeed a flashlight that takes into account both far and wide.

After talking for a long time, let me introduce the optical components. The U22III uses a stepped lens, which is a new generation of PMMA total reflection optical lens, which can make the beam range longer, and at the same time take into account the soft flood lighting at close range.

The lamp head uses a piece of optical glass and adopts a double-sided coating process, which is lavender and reflective, which can further improve the light transmittance and also play a role in preventing scratches.

The light-emitting core uses a Lumens SBT90.2LED, which is also the strongest LED lamp bead on the surface at present. Its performance can be seen from the price of a single piece of more than 200 yuan. The light aperture of the lamp head is 46mm, and the yellow water projected by the lens is concentric, giving people a refreshing feeling different from other flashlights.

The U22III’s long-range shooting capability of one kilometer should not be a problem. The large luminous flux and high-brightness convergent light column can illuminate the opposite mountain, and you can see the reflection of exposed rocks. Manke’s official announcement may be a bit conservative, and my personal feeling is even more than 1.5 kilometers away.

The vision level of the human eye in the dark is about 200 or 300 meters. U22III can even illuminate the other side of the lake when the low-brightness gear is turned on. Ambient lighting up close.

It is precisely thanks to the lighting characteristics that take into account the far and wide, U22III is widely used in field search, fixed-point lighting, emission of light signals, etc.

One-button operation, flexible and flexible

Like most of Manke’s products, U22III is also controlled by a side-press switch. The switch is located at the neck of the lamp. In order to quickly find the position of the switch by feel in the dark, the lamp neck is designed with a platform, and the 304 stainless steel buttons also have different feel.

The switch is designed in concentric rings, which can increase the stability of finger touch and pressing, and it is not easy to slip the hand. The surface of the button is slightly raised to fit the finger belly. The switch has a large surface area and a diameter of 1.1 cm. It is easier to press Comfortable.

A red, blue, and purple three-color LED voltage indicator is also integrated in the center of the switch. After turning on any gear lighting, the user will be prompted with the current battery voltage by color within 12 seconds. Blue means the voltage is greater than 3.6V; purple means the voltage is greater than 3.2V; red means the voltage is greater than 2.9V.

The disadvantage of the side push switch is that it is easy to turn on by mistake and cause danger. The circuit of U22III ensures safety through two aspects: one is that the extremely bright gear is not cycled in the normal gear, and it is not easy to be turned on by mistake; the other is that a four-click switch is set to realize the function of locking and unlocking.

In addition, in order to find the flashlight and the switch position in the dark, U22III also set the indicator light breathing flashing function, just press and hold the switch for 3 seconds to turn it on in the off state. After turning on the breathing flashing, press the switch again to turn it off. this function.

All functions of the U22III are realized by the side-press switch. The electronic switch has a triggering stroke of about 2mm. Holding the flashlight with one hand, the switch can be easily operated by the thumb.

The moonlight gear of Manke flashlight can also adjust the brightness, which is quite unique. The moonlight gear of U22III has five adjustable gears from 0.1lm to 5lm. After turning off the light at night, you will know the benefits of low brightness when you use it indoors. In the off state, long press the switch for 1 second to turn on the moonlight gear, and long press the switch again to realize two-way brightness adjustment. The brightness of each gear has no stroboscopic and whistling, which is friendly to the human eye.

The normal light-emitting state of U22III is: low light 20lm—medium light one 168lm—medium light two 980lm—high light 2000lm, long press the switch after power on to realize gear cycle, long press the switch again to realize reverse cycle, two-way cycle can quickly enter the needs brightness level.

Click the switch to switch the machine on and off, and you can directly open the memory gear. Whenever you double-click the switch, you can quickly enter the extremely bright gear of 5000lm and achieve fast response. Double-click the switch again to return to the previous brightness, or long-press the switch to enter the normal gear cycle.

Similarly, no matter what state it is in, as long as the switch is three-clicked, the U22III can enter the strobe state of 5000lm. The picture below shows the strobe effect at a distance of 30 meters. It is conceivable that it will be catastrophic if you look directly at this large luminous flux, high light intensity, and concentrating strobe. Press and hold the switch again to realize the special function cycle of “strobe-beacon-SOS”.

Quick charge and discharge, mobile power

U22III still uses Manke’s iconic hard carton packaging, with an orange and black model label on the surface, which is a bit rudimentary compared to other brands of flashlights.

Accessories include a flashlight, a high-quality nylon flashlight sleeve, a hand strap, a manual, and a USB charging cable. This cable has two connectors, one male and one female. This is a cable with OTG function, which is a good function for outdoor use. In order to save the cost of users, U22III does not have a standard battery.

As a high-power flashlight, the U22III needs a power battery with a discharge capacity of more than 40A to fully perform its performance. You can use the original Manke 21700 power battery, or you can purchase other batteries. Pro test, flat and pointed batteries can be used normally.

The U22III has a direct charging port at the lamp neck and opposite to the switch. The mainstream TYPE-C interface in the market is sealed with a rubber cap on the surface. The rubber cap comes with a plug, which can completely block the charging port.

This charging port is the only opening of the U22III. After it is completely sealed, it has the highest waterproof performance of IPX8 electronic products. It can be used at will, and the chain will not fall off in harsh weather conditions.

With an OTG line, it means that the U22III has a discharge capacity, and the actual measurement can achieve a rapid discharge capacity of 5V2A.

When using it outdoors, as long as you bring the U22III, it is equivalent to bringing a mobile power supply. With a solar panel, you can charge and store energy at any time, and you can charge other electrical equipment anytime, anywhere. The discharge does not affect the normal lighting use. It can be said to kill two birds with one stone.

As long as it is plugged in, the U22III can be charged, and the charging power can reach a level of about 5V2A10W. The red indicator light is always on during charging. If you use a high-power charging head, you can reach 3A fast charging.

After charging for about an hour and a half, the blue indicator light is on, indicating that the voltage has exceeded 4.12V at this time, but there is still a charging current close to 1A. At this time, normal use can be guaranteed, but I personally feel that this will give the user the illusion that it is full, so it is better to replace it with a purple light.

After that, the charging circuit turned on the trickle charging mode, and the battery was fully charged with a small current. It took 3.5 hours to fully charge the battery, and a total of 17.5Wh was charged. The fast charging and discharging function of U22III is very convenient in actual use.

Exquisite appearance, fine workmanship

The appearance of U22III shows that it is a flashlight. In the flashlight circle, this kind of flashlight with a lamp head larger than the barrel body is generally called a middle-head flashlight, which is also more in line with the general public’s perception of the shape of the flashlight.

The neck part of the lamp is slightly thicker, and three deep cooling grooves are opened. On the one hand, the high heat of the lamp bead during high-power operation is taken away through ventilation, so as to avoid the light decay caused by excessive temperature; on the other hand Weight control is also possible.

U22III is precisely machined from solid aviation aluminum, which ensures good strength, weight, texture and heat dissipation performance. The surface is treated with black military grade three hard oxidation and anti-wear treatment, and white laser engraving and printing, showing workmanship and quality.

According to actual measurement, the weight of U22III is only 175 grams, and the weight of the U22III with an original 21700 power battery is less than half a catty. Keeping light weight in outdoor activities is the key to saving effort.

The length of U22III is only 134mm, which is not enough for an adult. The diameter of the barrel is 28mm, the diameter of the lamp neck is 40mm, and the diameter of the lamp head is 52mm, which ensures a small and compact appearance.

Using the standard nylon flashlight cover, you can hang the U22III on your belt to carry it, which is light and effortless and easy to take. In addition, it is not afraid of collision and friction with other items in the backpack, which is easy to carry.

The barrel body of U22III adopts horizontal ring pattern, and is equipped with three larger runway-shaped planes. The outer surface of the tail cover also adopts horizontal and vertical bidirectional patterns, which improves the stability during operation, and also has the function of ventilation, ventilation and perspiration.

It can be said that the flashlight with the 21700 barrel body is full and comfortable to hold. The widening of the lamp neck can be used as a fit for the tiger’s mouth, and the length of the barrel body can also be full, which does not affect the operation when the switch is pressed. The edges of the U22III surface cutting process are all processed, and the hand feels solid.

There is also a one-hand rope hole at the tail of U22III, with a diameter of 3.5mm. If you feel that the standard hand rope is a little thin, you can use a 7-core paracord to make your own hand rope, and hang it on your wrist when using it to avoid accidental falling and bumping. .

The workmanship of U22III is relatively fine, and the inner edge of the hand rope hole is also chamfered and polished, which can avoid cutting the hand rope for a long time.

The lamp head is made of stainless steel to improve the strength, and the surface is sandblasted to avoid wear. The width reaches 12mm and the thickness reaches 2.5mm. It is not only very strong, but also has an attack tooth design on the surface.

The bottom end of the tail of U22III is also the consistent shape of Manke, with a depth of about 4mm. Personally, I feel that it can be shortened a little bit, so that it does not affect the functionality and can better control the length.

The bottom is flat, so the U22III can stand upside down stably, which feels a lot better than laying flat, which does roll easily. When standing upside down, if you add a diffuser to the lamp head, it can be used as a camp lamp, which is also very convenient.

The internal positive and negative electrodes of U22III use double springs to conduct electricity, which can compress batteries of different lengths to ensure that the circuit will not be disconnected or skipped due to shaking and bumps during use. The springs are all gold-plated to reduce pressure drop, avoid oxidation, and improve conductivity. efficiency. The design of the end face is conductive, and the power can be completely cut off by loosening the tail cover a little.

Stable battery life, body cooling

Introduced the appearance and lighting situation, of course, to understand the real performance of U22 III. Use the illuminance meter to connect to the computer to draw pictures, and do an objective test on the performance of U22 III. Since it is a concentrated light + large luminous flux, in order to avoid the illuminance meter from bursting the meter, the lamp head is about 1.2 meters away from the illuminance meter, and the fully charged original lithium battery is used for the test. .

The five constant-brightness gears of U22 III and the corresponding one-meter illuminance value are as follows: low brightness 20lm-730lux, medium brightness 168lm-4830lux, medium brightness 2 980lm-29000lux, high brightness 2000lm-68100lux, extreme brightness 5000lm-151000lux, The corresponding ratios are roughly the same, and the illuminance step distribution gradually becomes larger, which is suitable for different brightness requirements.

Let’s take a look at the inevitable downshift of the flashlight. Turn on the high brightness of 2000lm and start downshifting in about 2 minutes, and it will be reduced to an illumination level equivalent to medium brightness 2; turn on extremely bright 5000lm and start downshifting in about 1 minute, and it will also drop to medium brightness equivalent to 2. Illumination level, and then maintain a better constant current level output.

After U22III drops from the extremely bright gear to the second gear of medium brightness, the illuminance has a slight recovery process. Since then, due to the increase of temperature and the slow drop of battery voltage, the illuminance also maintains a slow decline within 1 hour. No change in brightness can be seen.

When it comes to the accumulation of heat, at the same time of the illuminance test, use a dual-channel thermocouple to connect the lamp head and the barrel to measure the temperature. It can be seen that after the extremely bright light is turned on, the temperature of the lamp head and the barrel is rising rapidly, and the output is output after downshifting. The temperature of the lamp head gradually decreases, and the temperature of the lamp head gradually approaches the lamp head, and even exceeds the lamp head temperature after nine minutes, indicating that the lamp body is also participating in heat dissipation. In an indoor unventilated environment of about 25.5 ℃, within ten minutes, the maximum temperature of the lamp head is 53.6 ℃, and the maximum temperature of the barrel is 54.1 ℃.

When the constant current is output for about 30 minutes, the temperature of the lamp head is measured to be 56.3 ℃, and the barrel body is 58.5 ℃. During use, it is necessary to pay attention to protection to avoid hot hands. In addition, in the outdoor ventilation environment, the maximum temperature should be controlled within 50 ℃.

In the middle of the battery life, the brightness still rebounded slightly. At about 43 minutes, it suddenly turned off automatically. After that, it can be turned on again after standing for a while. This battery life is longer than the time given in the manual. If it is used in the first gear of medium light, the battery life can exceed 11 hours.

After automatic shutdown, take out the battery and measure, the cut-off voltage is about 2.75V, and the battery is not over-discharged. The circuit setting of U22III is more reasonable.

Hold the light in your hand, don’t be afraid of the dark

The darker you are, the more you yearn for the light, and the more difficult the mountains and rivers are, the more you have to move forward bravely. This way, you need a portable and reliable flashlight as a guarantee.

Manker U22III version 90.2 spotlight flashlight has compact size, classic appearance, powerful performance, ultra-long range, convenient operation and discharge function. It is an excellent lighting tool for outdoor activities, tactical services, patrol search and rescue. Good equipment for personal EDC, survival fanatics, flashlight enthusiasts.

If you have the light in your hand and don’t be afraid of the dark, then start with a U22III to experience this brand-new far-reaching lighting.