The classic continuation of 4000 lumens and turbulent straight JETBeam TH20 evaluation
The classic continuation of 4000 lumens and turbulent straight JETBeam TH20 evaluation
First of all, I am a J fan. Although I am not a special fan, my first package was JETBeam’s mkIII. At that time, it was because of the shape that penetrated the heart and the luminous flux of 230 lumens, I spent 500 yuan into a 16340 small barrel. , Saying that 10 years ago, 500 yuan was my pocket money for a full month. I remember that in order to get this package, I was chasing the price with the owner light_girl for nearly a month, and finally I couldn’t bear it and gave me a fairly good discount. 12 years have passed, JET is still the original JET, light_girl is still the lively light_girl, many things seem to have changed, but the heart is still the same heart, like a friend, maybe a year without contact, but a phone call he can prove it He has you in his heart. My inner feeling about JETBeam is the same. There are hundreds of bobbins that I have started playing with barrels for many years. The bobbins of JET are the bobbins with the lowest turnover rate. My favorites are MKIII and RRT3. Both of these packages are so classic that I have remodeled and upgraded them again and again, but have never planned to abandon them.
It seems to be too far away to continue talking about TH20. As a new generation of high-light-pass semi-flood barrel TH20, the overall performance is quite satisfactory. There are no particularly dazzling indicators and no particularly obvious shortcomings. On the contrary, from any angle, TH20 should have everything , this is the most terrifying, perhaps the most insipid package brings the most intuitive feeling.
From the beginning of the packaging, the packaging experience of the TH20 is not particularly amazing. There are no semi-transparent windows and no magnetic suction boxes. The simple carton is full.
The accessories in the package mainly include electric barrel cover, hand rope, charging cable, switch cap and o-ring. In fact, the probability of replacement of the switch cap and o-ring is not high in normal use, but with JETBeam’s consistent style of being durable and not loving, it will be difficult to find a replacement when the switch cap is aged for 5-6 years, so it is better to keep it. Bar.
There is nothing to say about the hand strap and the electric barrel cover. They are all quite satisfactory configurations. The electric barrel cover belongs to the all-inclusive electric barrel cover. The protection of the electric barrel is in place, but there is nothing innovative.
The hand rope is still the kind of common thin neck hand rope. I personally don’t like it very much. I always feel that the neck is thin and easy to break. The rope holes are on the two ears of the tail, which is actually a quite satisfactory design. The hand rope will slightly affect the handstand, and the details are not particularly perfect.
The charging cable is more interesting. Recently, the charging cables of JETBeam products seem to be all the same. A usb-a plug integrates both a male and a female connector, so that the TH20 can also be connected to another device while charging. Will not occupy usb interface resources.
After talking about accessories for a long time, I started to talk about TH20. The shape of TH20 is a typical tactical shape. In fact, many of JETBeam’s packages belong to the cool tactical appearance. The volume is about 161mm*30mm, the diameter of the lamp head is 40mm, and the factory comes standard with a 21700 battery with a capacity of up to 5100mah, which is basically twice the capacity of the ordinary 18650. The weight with the battery is about 270 grams, which is not light but the material is very solid. The most conspicuous is that the protection level is as high as IPX8, which can basically be used as a diving electric barrel.
The stainless steel pressure ring on the head is a design that JETBeam has always insisted on. This design seems simple, but it is quite troublesome to process. The material of stainless steel requires better tools, and the processing cost is much higher than that of aluminum. The hardness is much higher than aluminum. Don’t look at this small pressure ring, when it is dropped, the aluminum may be deflated + peeled off, and the stainless steel may be only a mark at most. Not to mention wear resistance, high hardness means more wear resistance, and stainless steel itself is corrosion-resistant, so generally no coating is required. In other words, even if the stainless steel pressure ring is worn out by 1mm, it will still look the same, and aluminum is miserable. Without the coating, it will quickly turn ugly gray, so a small stainless steel pressure ring will keep your tube looking new for a long time.
The stainless steel pressure ring of TH20 adopts a micro-crown shape, which is similar to the current shape of various bobbins. This shape can provide higher point pressure while maintaining a certain strength, and has a good effect on destruction and fighting.
The LED configuration adopts the second-generation XHP70 from Cree. There is nothing to say. The XHP70 is the XHP70, with a luminous flux of 4000 lumens and a power of 30w, which is a product with high luminous efficiency. However, such large-core LEDs are generally not very long-range, so the TH20 is no exception. The nominal range of 340 meters can only be said to be quite satisfactory.
The standard orange peel light cup makes the transition between the main light spot and the flood light uniform, which can provide a good paving effect. Coupled with the neutral design itself, the TH20 belongs to the neutral spot effect that cannot be used in neutral. There are floodlights and long-range shots, but they are not outstanding.
The lens of the lamp head adopts a coated lens, and the coating color is slightly blue. Compared with other exaggerated color coatings, this coating can less affect the color temperature and will not hinder the light.
The head of the electric barrel adopts 6 grooves, and the edge is relatively sharp, which is relatively easy to wear and white. Several heat sinks are designed at the position of the barrel head close to the LED substrate. Although it cannot completely suppress the heat of the XHP70, it also provides a certain heat dissipation capacity.
There is a rubber cap on one side of the heat sink, with a TYPE-C connector inside. With the charging cable that comes with the barrel, it can achieve 5v1.8a current charging, that is, the charging power of nearly 10w, although it is not particularly huge, but 10w The charging power is also ok for the 21700 battery charging speed. There is a small hole next to the charging head, and there is an indicator light inside to indicate the charging status, and the red light will light up during charging.
It takes about 5 hours to fully charge the battery, which is acceptable, after all, the capacity is close to two 18650. Observing the current diagram, it can be basically seen that it has entered the constant voltage charging in 1 hour and 10 minutes. After 3 hours, the current has dropped to 300ma and it is basically full, and the latter is basically a supplementary stage.
Do you still remember the USB cable mentioned earlier? This cable has a secret. It is a cable that supports OTG, which means that TH20 can be used as a power bank. The measured capacity is not low. The output capacity reaches 13wh, which is close to two 18650 The capacity of the power bank is sufficient for emergency charging. And the most respectable thing is that TH20 does not have a battery. It is almost one of the few electric barrels on the market that can use ordinary rechargeable batteries to achieve direct charging and power bank functions. Basically, other brands need special batteries to achieve this function. This alone can throw off opponents a few streets.
The barrel knurling adopts a well-regulated diamond knurling pattern, which can play a certain anti-slip effect.
The tail cover also adopts a knurling pattern similar to the barrel body, which can play a certain anti-slip effect.
The two ears on the tail look ugly. It is a typical grumpy and practical design, which can support inversion, but the position of the rope hole slightly affects the inversion. It is recommended to change the rope hole to the vicinity of the heat sink. The main switch adopts a more common tactical switch. The more interesting one is the dimming button. This button can directly control the flashing of the electric barrel. In terms of gear configuration, the TH20 adopts a 3-position cyclic dimming. The dimming switch is turned on when the electric barrel is turned on. The time is responsible for dimming, and the gear is a three-speed cycle. Double-clicking can provide an extremely bright gear of 3980 lumens. The introduction is easy to use. Three clicks can enter the strobe and sos gears, which should be there.
Personally, I think the switch part is one of the highlights of TH20. The dimmer switch with rocker structure has a very good operating feel, easy to use and not easy to turn on by mistake. Even wearing thick gloves will not affect the operating feel. The dimmer switch is a one-button flash button when the electric barrel is turned off. The single function plus the feature of flashing when you press it is especially suitable for tactical use.
To write a brief summary about the gears, although the JETBeam gears do not have too many fancy functions, all the operations are very smooth. This is actually the accumulation of big manufacturers. They understand what is the key and worth keeping.
The TH20 adopts a double-walled barrel to realize dual circuits of charging and control, which increases the strength of the electric barrel to a certain extent and also increases a certain thickness. The thread at the tail adopts a deep stepped thread, which feels good. TH20 does not use plated threads, that is to say, the thread is conductive, so it cannot be powered off by unscrewing the tail cap. Fortunately, the TH20’s tail switch has a certain strength, and it is difficult to open it by mistake under normal circumstances.
A very thick spring is used in the tail cover, and it is also a double spring, which can provide lower contact resistance. The middle electrode corresponding to the double-walled barrel adopts end-face contact, and the contacts are all gold-plated, which is of good workmanship. The positive pole uses a more extreme copper pillar design with extremely low resistance.
The TH20 comes standard with a 21700 lithium battery with a capacity of 5100mah when it leaves the factory. The model is HL51. The measured discharge capacity is close to 4600mah and about 16.2wh, which is slightly smaller than the nominal capacity. Of course, it may also be that the battery is not fully activated.
For tactical barrels, the hand feel is very important. I always feel that the 18650 barrel is too thin. Even if my hand is small, I feel that the 18650 has no sense of security. Although the diameter of the 21700 is only 3mm more, the grip feeling is greatly improved, especially when the grip is reversed. Although the anti-slip pattern of TH20 does not provide much anti-slip effect, the larger diameter makes the hand and battery feel better. The barrel also has a larger contact area and a firmer grip, giving it a solid and reliable feel. In tactical use, especially the one-button flash rocker switch can be operated on both sides. Although the bumps on both sides limit the rocker switch to a certain operating angle, the rocker is large in size and can be operated in both directions. , so it can also provide some fault tolerance under fast operation, and the overall operation score is high.
In terms of light spot, TH20 is not a particularly outstanding project. It belongs to the standard coverage. The luminous flux of 4000 lumens has a certain long-range and a certain floodlight, but it is a bit insufficient to cover a large range of 4000 lumens at medium and long distances. But even with that being said, 4000 lumens is definitely not a joke number. In actual use, 4000 lumens is enough for most application scenarios, and the larger main spot can provide a lot of tactical use. Strong fault tolerance, no need to desperately aim at the opponent’s face, and there will be no situation where the 10,000-lumen tube flashes and destroys the enemy and our group. The luminous flux of 4000 lumens is also the biggest advantage of this size of the package is the battery life. I have to say that the luminous efficiency of the XHP70 LED is very high. With a long battery life, the measured TH20 can basically continue to illuminate with a luminous flux of about 2000 lumens, which is impossible for many small directs. With the addition of a battery with a capacity of up to 5100mah, it can basically be said that the performance of the TH20 is equivalent to two small directs. Together, whether it is battery life or luminous flux. Of course, it is also very easy to use 4000 lumens to dry two small straights when explosive output is required.
The 40mm orange peel lamp cup and the lighting effect of XHP70 can be summed up in 8 words “the transition is even and suitable for both the middle and the near”, especially suitable for daily paving, TH20 can provide the best lighting effect in the middle and short distances, not the long shot The strengths can only be said to be sufficient.
Finally write a summary
Perhaps it is the seemingly bland but extremely convenient features of TH20 that make the JETBeam brand enduring. Consumers are not fools. When you try a few bobbins with high indicators but a nameless and crappy feeling, they will eventually return to suit. In fact, JETBeam has caught consumers very accurately. As for the TH20, it has a lot of shortcomings on the surface, and the luminous flux is not enough. Explosion, the hand rope affects the handstand, the tail and ears are ugly, the anti-slip pattern is the same thing, and the electric barrel cover and the hand rope are nothing new, and there is no holding clip, but if you think about it, these are not dead spots. On the contrary, if you buy TH20, you may complain a little but don’t plan to replace it. This is how TH20 feels to me. It has enough luminous flux, long battery life, low heat generation, excellent protection performance, and direct charging is the most convenient. The main thing is not to pick batteries, and this thing can also be used as a power bank, coupled with the reliable quality of JETBeam, what else is there to complain about.
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