3 LED flashlight. How to choose a powerful battery LED flashlight. Connecting a micromodule charging and battery

To move or work in the dark, you need a flashlight. They are different types ranging from small pocket to large military or search. The design and power of the flashlight depends on its purpose, for example, in order to highlight the locking well in the dark entrance to the low power, and the tourists need a camping lamp, which can shine in all directions, like a kerosene lantern and waterproof shockproof lamp to move In poor visibility conditions. In this article, we will look at how to choose a powerful LED battery lamp for your purposes.

Criterias of choice

To make the right choice of LED flashlight you need to take into account a number of factors, including:

1. Type and power of LEDs. The brightness and consumption of energy depends on them.
2. Colorful temperature. Comfort depends on it.
3. Capacity and type of batteries. Affects the duration of work.
4. Reflector and optical system. It depends on how much the light flux will be focused.
5. Constructive features. Affect impact resistance, water and dust resistance, ease of use, carrying and holding in hand.

Types of LEDs

Different LEDs can be used in flashlights and every year they have more powerful and brighter models. However, this does not prevent them from splitting them on the main types applied:

1. 5 mm LEDs. Earlier were used in all LED lamps, now it is an outdated type of LED, the cause of this is their small brightness and tangible energy consumption. To get a strong light flux from the flashlight, you have to install many such LEDs, which is not always possible, since such a lantern does not fit in the pocket.

The photo below shows an example of a lantern on 5 mm LEDs.

5 mm LEDs in lamps

1. SMD LEDs.

Different types can be used - 5050, 3528, 5730 and others. They have two advantages - high power and small dimensions. This allows you to achieve a good light flux for small-sized lamps. Matrices from such LEDs are installed on campgrounds and lanterns of other types with the function of the mode with diffused light. It allows you to highlight a large area from one flashlight with a scattered stream, albeit with losses of illumination, and not a focused bright beam.

Panel with scattered light on a flashlight

1. Powerful LEDs 1, 3, 5 watts. Two groups can be distinguished here:

• Noname LEDs.
• Branded LEDs, such as CREE brands and its popular XM-L models and others.

Light on powerful LEDs

Accordingly, cheap Chinese LEDs are installed in the products of the budget price segment, and branded - in the more expensive models of the lanterns. The differences consist in a specific lighting stream - the number of lumens per 1 watt of power, in other words, the efficiency of the efficiency. It depends not only how the lantern will shine brightly, but also how long it will work from one charge of batteries. It is also observed that cheap powerful LEDs faster failure as any noname products.

What LEDs are installed in powerful lanterns

As already mentioned, the most common are CREE LEDs, we have prepared a consolidated table with the characteristics of popular LED models for flashlights.

Name	CREE XM-L T6	CREE XM-L2	CREE XP-G2	CREE XR-E
Photo
U, B.	2,9	2,85	2,8	3,3
I, Ma.	700	700	350	350
P, T.	2	2	1	1
Operating temperature, ° C	<150	<85	<85	<85
Light stream, lm	280	320	145	100
Glow angle, °	125	125	115	90
Color rendering index, RA	80-90	70-90	80-90	70-90

And more powerful.

Name	CREE MT-G2	SREE MK-R	Luminus SST-50	Luminus SBT-90
Photo
U, B.	5,7; 8,55; 34,2;	6; 12;	3,6	3,5
I, Ma.	1100; 735; 185;	2500; 1250	5000	9000…13500
P, T.	6,3	8,5	18	20…40
Operating temperature, ° C	<85	<150	<85	<85
Light stream, lm	440	510	1250	2000…2500
Glow angle, °	115	120	100	90
Color rendering index, RA	<70	70-90	80-90	80-90

But the LEDs can be denoted in a different way, more brief marking, for example:

• XM-L: T5, T6, U2.
• XP-G: R4, R5, S2.
• XP-E: Q5, R2, R.
• XR-E: P4, Q3, Q5.

In this video, the process of replacing such a LED is shown.

Colorful temperature

For lanterns, the color temperature is not so important as the color temperature for lighting the premises. However, it is worth paying attention to it. Perceived for sight as softer, and neutral and cold shades make you be more attentive and focused.

Color temperature of lanterns

Batteries

Now the leading place in sales occupy Li-Ion batteries. The reason for this is their large container at small dimensions, good current-turn, almost complete absence of memory effect. There are also the disadvantages that should be remembered - in the cold, lithium-ion batteries are discharged faster than heat, and when the lithium bank is closed without protection, a reaction with high heat release will occur, up to explosion.

Battery 18650.

Powerful LED lanterns are equipped most often precisely by lithium batteries, except for them there are acB of other types:

• Ni-CD - nickel-cadmium.
• Ni-Mh - nickel-metalhydride.
• PB - lead.

But recently they are used in flashlights less and less.

Reflector and optical system

The design of the reflector and the presence of lenses affects the shape of the light spot. Separate models have the ability to move the lens, which allows focusing the beam of light. The lenses collect a light stream, as a result you get a more illuminated space, but smaller in the area than without focusing.

Focusing of the light beam

But for different tasks, the light beam of different sizes is needed. For example, if the lantern is used to repair the machine, then in most cases the models are better fit with the possibility of focusing to illuminate a large area when searching for a fault, after which the light beam is a small, but bright point when it is eliminated or detailed. At the same time, it is not necessary to move in the dark, the focused spot is not necessary, the lanterns are better, which widely illuminate the space in front of them.

Types for purpose

In addition to the elements used and their features, when choosing flashlights distinguish both for purpose. To properly choose the LED flashlight for specific tasks, you need to clearly realize what you will use it, because there are no universal models as such.

Military and special devices

The main feature of military lamps and special-purpose lighting devices is primarily high body strength and its resistance to moisture. Such devices include search engines that shine brightly and far away, which allows you to find anything in difficult conditions, for example, in the forest or in large rooms.

Military lantern

Models for technical personnel

Lanterns for technical personnel must have compactness and long work time. Their size and weight should not complicate the movement of an employee who also carry tools and details. An excellent addition to such an instrument will be able to focus the light beam and a naked mount.

Headlamp

For relaxation in nature and tourism

For tourists, search and campgrounds are suitable, also those that are used for military purposes are suitable, since the conditions in which they will work are similar - humidity, the possibility of blows and falls and so on. The camping lamp resembles a kerosene lamp, is a highlight or directed lighting device. It is convenient to use it, for example, when preparing for overnight stay and dinner. You should also pay time on flashlights with a built-in generator. They can either work without batteries, or recharge when exposed to the generator lever (rotation or rhythmic pressing on the handle, depending on the design).

Camping Lantern

How to remake an ordinary flashlight in the LED

Let's look at how to make a LED flashlight with your own hands. To do this, you will need the next set of details and tools:

1. Case. You can take from the old lantern or make your own hands, as the option print on a 3D printer.
2. LEDs. Separate individually.
3. or resistors to limit their current.
4. Battery.
5. Accumulator charge controller or charger suitable for the type of battery used.
6. Button for switching on or toggle switch.

If you use powerful LEDs - you will need a mounting board on an aluminum substrate.

Substrate for LEDs

To improve the heat sink, you need to use the radiator, you can take from the motherboard. Small radiators are installed on chipsets, north bridge, power keys and other fees.

LEDs on the radiator from the motherboard. Do not forget to miss all thermopal!

To charge and protect the battery 18650, you can use the TP4056 fee with protection, it can be ordered to Aliexpress or buy in a radio shop, costs 20-50 rubles.

TP4056 Battery Battery Charging Board

Interesting: This fee can be used to replace disposable batteries in the flashlight or for removing any instrument on batteries.

We pack it in the case of the lantern, if it is iron, as in the photo, do not forget to provide insulation for all boards.

To power the LEDs, you can use a specialized driver or a pulse boost converter, for example, MT3608. The output voltage is installed using a multi-turn potentiometer, in the photo below it can be found on the Blue Case.

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Alexey Bartosh

Specialist in repair, maintenance of electrical equipment and industrial electronics.

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If you use a driver for power, then its main characteristics are output current and power, it depends on it, how much you can connect the LEDs sequentially.

It is necessary to choose such a voltage so that the current is lower than the nominal 10-30%. For 1 W LED, the rated current lies within 300-350 mA.

Enhancement converter in flashlight

A less difficult way is the selection of the working regime for heating LEDs. That is, gradually increase the tension, trying the radiator to the touch, it should not be basked, or its temperature should be less than 50 degrees Celsius, it is such a temperature when, when you touch the hand it also suffers and you do not want to wander it. This is an inaccurate way, therefore it is better to navigate the current and heat.

Homemade lantern assembly

The second option is easier. To replace the incandescent lamp on the LED - you need to take an old light bulb, break the flask, extract all the insides so that only the base is left. Next, inside the base, the insulated output of the LED with a soldered resistor, selected for the corresponding voltage.

Hello everyone, I bring to your attention a powerful homemade flashlight. Now you will not be afraid of any darkness. The homemade is going quite simple, all the materials are purchased and they are easy to get. So, for example, the author's body made from plumbing pipes and details for them. Lithium batteries are installed in this lantern, which allows it to simply charge it. So consider in more detail how to collect such a flashlight!

Materials and tools used by the author:

List of materials:
- lithium batteries;
- ;
- ;
- reflector;
- lens;
- radiator and fan;
- button for switching on;
- Wires;
- connector for connecting a charger;
- Charger;
- paint;
- epoxy adhesive;
- stainless wire;
- screws, thermalcaste and more.

List of tools:
- drill;
- metal hacksaw;
- soldering iron;
- nippers;
- screwdriver;
- marker;
- Pliers.

Lantern manufacturing process:

Step one. Install the LED on the cooler
LED We will use rather powerful, which means that it will be necessary to get warmth. For these purposes, we will need a small aluminum radiator.

We plan places, drill holes and cut the thread under the screws. Next, we screw the LED to the radiator. We definitely apply to the radiator the thermal paste, otherwise the heat transfer will be low and the LED will overheat.

Next, we install the reflector, the author fastens it with epoxy glue. It is impossible to use hot glue here, since everything heats up. Then you can install a lens. For fastening the lens, the author used a thin stainless wire. Just tying the lens bracket to the radiator using it. That's all, now simply install the fan on the other side of the radiator. The fan is connected to the LED in parallel so that it turns on immediately when the flashlight is turned on. Connections are soldered for reliable contact and insulating the heat shrink.

Step second. Making the case
As a body, we will need a piece of sewage pipe from PVC, it will contain two batteries for 4000 mAh each. As for the radiator with the LED, it will be installed inside the cone-shaped part. Since the filling does not completely fit into it, the author increased the length of the detail slightly. He cut off a piece from another cone-shaped part and glued it with superclaim. We also need a pipe stub, there will be a connector for the charger.

Step Three. Hole under the button
In the housing drills the hole, and then we melt it with files or cut out the stationery knife. Here we then install a button to turn on the flashlight.

Step fourth. Fresh filling
The radiator with the LED installed will be fixed in the housing. For these purposes, we will need a drill and a short diameter drill. Drill holes and screw all this business with cogs. Excess pieces cut off so as not to interfere. You can not close the remaining windows, they are needed for ventilation. In general, in the case in the area of \u200b\u200bthe radiator, it would be nice to chop down holes for cooling. After that, we solder the button and install it in your place.

Pitch fifth. We deal with batteries
We have two batteries, each 4000 mAh capacitance. Their author installs in parallel, for this they sold out "minuses". Between "minuses" we pay bms. Thanks to this controller, the batteries will work for a long time, it will not allow them to recharge or discharge to a critically low value. Pluses of batteries, too, connect the wire. That's all, now we solder the necessary wires and set the batteries into the case.

Step six. Charging connector
In the plug, set the socket for connecting the charger. It is attached with the nut. We solder wires, charging must go through the BMS controller. Well, then install the plug in your place.

LEDs today are embedded anywhere - to toys, lighters, household appliances and even in stationery. But the most useful invention with them is of course a flashlight. Most of them are autonomous and give a powerful glow from small batteries. You do not get lost in the dark, and when working in a slightly familiar room, this tool is simply indispensable.
Small instances of various LED lanterns can be bought almost in any store. They cost inexpensively, but the quality of the assembly can sometimes not rejoice. Whether the business is self-made devices that can be made on the basis of the most simple details. It is interesting, informative and has a developing effect on masters.

Today we will look at the next homemade - the LED-lantern, made literally from the primary parts. Their cost of no more than a few dollars, and the efficiency of the device is higher than that of many factory models. Interesting? Then make it with us.

Principle of operation of the device

This time the LED is connected to the battery only through resistance to 3 ohms. Since it presents a ready-made source of energy, it does not require a storage thyristor and a transistor for voltage distribution, as in the case of Faraday's eternal flashlight. Electronic charging module is used to charge the battery. The tiny micromodule provides protection against voltage drops and does not allow recharge battery. The device is charging from the USB connector, and on the module itself there is a micro USB connector.

Required details

• Plastic syringe on 20 ml;
• Lenses for LED flashlight with housing;
• Micro-button switch;
• 3 ohm resistor / 0.25 W;
• Segment of the aluminum plate for the radiator;
• Several copper wires;
• Superchalters, epoxy resin or liquid nails.

From the tools you will need: a soldering iron with a flux, a glue gun, a bormer, a lighter and a paint knife.

Collect a powerful LED flashlight

Preparation of LEDs with lenses

We take a plastic cap with lenses, and labeled the circle of the radiator. It is needed to cool the LED. On the aluminum plate, placing landing grooves, holes and cut the radiator on the markup. This can be done, for example, with the help of bormer.

Pull the magnifying lenses for a while, now they will not be needed. From the back side, the cap on superclauses glue the radiator plate. Holes, the grooves of the cap and the radiator must coincide.

LED contacts Ludim and disappear with copper wiring. We protect the contacts with shrinkable cambricks, and heating them with a lighter. We insert a cap with wiring LED from the front side.

Processing Lantern Corps of Syringe

Lock the piston with a knob in the syringe, they will no longer need us. Cut the playback cone by a painting knife.
We consider completely the ends of the syringe, pulling the holes in it for the LED contacts of the flashlight.
Breeping the flashlight cap to the end surface of the syringe to any suitable adhesive, for example, on epoxy resin or liquid nails. Do not forget the LED contacts to put in the inside of the syringe.

Connecting a micromodule charging and battery

On lithium battery, secure terminals with contacts, and insert the syringe into the case. Tighten the copper contacts to clamp them with the battery case.

The syringe remains only a few centimeters of free space, insufficient for the charging module. Therefore, it will have to divide into two parts.
We carry out the painting knife in the middle of the board of the module, and break it along the cutting line. Using double tape connect both halves of the board together.

Open contacts of the module module, and disappear with copper wiring.

Final lantern assembly

The resistor is soldered to the module board, and we connect it to the micro button, isolating the contact with the heat shrink.

The remaining three contacts are soldered to the module according to the connection scheme. Micro-button plug into the last queue by checking the operation of the LED.

When purchasing or assembling new LED flashlights, you should certainly pay attention to the LED used. If the lantern you acquire only to illuminate the dark street, then the choice is huge - choose any of the bright LED of the white glow. But if you want to buy a portable lighting device with characteristics for more complex tasks, here the choice of the appropriate light flux is an important point, that is, the ability of the device to illuminate a large space with a powerful beam.

Main characteristics

LEDs are responsible for the quality of light that radiates the lantern. The stability of lighting depends on the set of characteristics, among which - the current consumption, the flow of light and the color temperature. Among fashion lawmakers, it is worth noting the CREE company, in its range you can detect very bright LEDs for the lanterns.

Modern pocket models are created on a single LED, the power of which reaches 1, 2, or 3 W. These electrical characteristics are the properties of various LED models from known brands. The intensity of light rays or light stream is an indicator that depends on the type of LED and the manufacturer. The manufacturer also indicates the characteristics the number of lumens.

This indicator is directly related to the color temperature of the light. Light-emitting diodes can emit a light flux reaching 200 lumens per 1 watt, and produced today with different temperatures for the glow: heat-yellowish or cold-white.

In the lanterns with a warm white tint, radiation is enjoyable for human eyes, but they shine less brightly. Light with a neutral color temperature effectively makes it possible to consider the smallest elements. Cold and white lighting is usually typical for models with a huge range of the light beam, however, with long work it can irritate the eyes.

If the temperature reaches about 50 ° C, the period of operation of the crystal can be up to 200,000 hours, but this is not justified from an economic point of view. For this reason, many companies produce products that can withstand the operating temperature to 85 ° C, it is possible to save on cooling. Due to the exceedment of the mark at 150 ° C, the technique may easily fail.

The color rendition index is a qualitative indicator that characterizes the LED property to illuminate the space, while there is no distortion of the present shade. LEDs for flashlights with a color source characteristic of 75 CRI and more is a good option. An important element of the LED is a lens, which sets the angle of dispersion of light streams, that is, the beam glow range is determined.

In any technical characteristic of the LED, the angle of radiation is certainly noted. For any of the models, this characteristic is considered individual and usually varies in the range from 20 to 240 degrees. In powerful LEDs for the lanterns, an angle reaches about 120 ° C, and mainly the equipment includes a reflector and an additional lens.

Although today, you can observe a strong jump in the production of powerful LEDs consisting of many crystals, global brands still produce LEDs with less power. They are produced in a small housing, which does not exceed 10 mm in width. With comparative analysis, it can be noted that one such powerful crystal has a less reliable scheme and an angle of dispersion than simultaneously a pair of similar elements in a single case.

It will not be superfluous to recall the Superflux four-line LEDs, the so-called "Pirannie". These LEDs for flashlights have improved technical characteristics. LED "Piranha" has the following major advantages:

1. the flow of light is uniformly distributed;
2. no need to remove heat;
3. lower price.

Types of LEDs

To date, many lamps are available on the market with improved properties. The most popular are LEDs from the company CREE INC.: XR-E, XP-E, XP-G, XM-L. Today, the newest XP-E2, XP-G2, XM-L2 are also popular - they are mainly used in small lanterns. But, for example, the Cree MT-G2 and MK-R LEDs from Luminus received widespread use in huge search engine models that can work simultaneously from battery pairs.

In addition, the LEDs are made to distinguish between brightness - there is a special code, thanks to which you can sort the LEDs according to this parameter.

When comparing some diodes with others, it is worth paying attention to their dimensions, and rather, to the section of light-emitting crystals. If a plot of such a crystal is small, it means it is easier to focus its light into a narrow beam. If you want XM-L from the LEDs, it will be necessary to obtain a non-erase beam, then it will be necessary to use a very large reflector, which negatively affects the mass and dimensions of the housing. But with small reflectors on a similar LED, a pretty effective pocket flashlight will be released.

Scope of LEDs

Basically, consumers when selecting lamps choose models with a maximum glow beam, but in many cases they do not need this option. In many cases, such an inventory is used to illuminate the nearby terrain or an object that is at a distance of no more than 10,000 m. The long-range flashlight shines by 100 m, although in many cases a rather narrow beam, poorly illuminating the surrounding area. As a result, when illuminating such lighting devices, the remote object, the user will not notice those objects that are located in close proximity to it.

Consider a comparison of the tonality of light, which gives LEDs: warm, neutral and cold. When selecting the appropriate flashlight temperature, the following important points should be taken into account: the LEDs with warm glow can minimally distort the color of the illuminated objects, but they have a smaller brightness than the neutral spectrum LEDs.

When choosing a powerful search or tactical lamp, where an important point is the brightness of the instrument, it is recommended to select a LED with a cold spectrum of light. If the flashlight is necessary for life, tourist purposes or for use in a naked model, then competent color rendition is important, and therefore, the LEDs with warm light will be more winning. The neutral LED is a golden middle in all characteristics.

Without taking into account the cheapest lights that have only one-only button, many lanterns have a pair of operating modes, among which the "stroboscope" and "SOS" modes. The non-hemp model has the following job options: the highest capacity indicator, average power and "stroboscope". In addition, the average power is mainly equal to 50% of the highest brightness of light, and the lowest is 10%.

Brand models have a more complex structure. You can manage the mode of operation using the button, the rotation of the "head", the turns of the magnetic rings and the combination of the total above.

Consider the LED products, ranging from old 5-mm to supernators of powerful LEDs of which reaches 10 W.

To choose the "correct" flashlight for your needs, you need to figure out which LEDs for flashlights and their characteristics.

What diodes are used in flashlights?

Powerful LED lights started with devices with a 5-mm matrix.

LED lights in completely different versions, from pocket to campgrounds, received a wide range of distribution in the mid-2000s. Their price decreased markedly, and the brightness and long service life from one charge of the batteries played a role.

5 mm White Supervice LEDs are consumed from 20 to 50 mA, when the voltage drop is 3.2-3.4 volts. The power of light is 800 μs.

Very well show yourself in miniature lanterns-keychains. Little size allows you to wear such a flashlight with you. They feed either from "mini-finger" batteries, or from several round "tablets". Frequently used in lighters with a flashlight.

Here is what LEDs in Chinese lanterns have been established for many years, but their century gradually expires.

In search engines with a large size of the reflector, there is an opportunity to mount dozens of such diodes, but such decisions are gradually moving into the background, and the choice of buyers falls in favor of the lanterns on powerful LEDs type CREE.

Search flashlight on 5mm LEDs

Such lights operate from AA, AAA or batteries type batteries. It is inexpensive and losing both in brightness and as modern lanterns on more powerful crystals, but about it below.

In the future development of lanterns, manufacturers have shifted many options, but the quality products market occupy lights with powerful matrices or discrete LEDs.

What LEDs are used in powerful lanterns?

Under powerful lamps, there are modern lights of various types ranging from those that the size of the finger ending with huge search engines.

In such products in 2017, the CREE brand is relevant. This is the name of the American company. Its products are considered one of the most advanced in the field of LED technology. Alternative are LED from the Luminus manufacturer.

Such things are significantly superior to LEDs from Chinese lanterns.

What CREE LEDs in flashlights are set most often?

Models wear a name consisting of three-four characters separated by a hyphen. So CREE XR-E, XR-G, XM-L, XP-E diodes. XP-E2, G2 models are most often used for small lanterns, and XM-L and L2 are very universal.

They are used, starting from the so-called. EDC lanterns (for everyday wear) are small lanterns size less palm, to serious search lights of large size.

Let's look at the characteristics of powerful LEDs for flashlights.

Name	CREE XM-L T6	CREE XM-L2	CREE XP-G2	CREE XR-E
Photo
U, B.	2,9	2,85	2,8	3,3
I, Ma.	700	700	350	350
P, T.	2	2	1	1
Operating temperature, ° C
Light stream, lm	280	320	145	100
Glow angle, °	125	125	115	90
Color rendering index, RA	80-90	70-90	80-90	70-90

The main characteristic of the LEDs for the lanterns is the light stream. It depends on her brightness of your lamp and the amount of light that the source can give. Different LEDs, consuming the same amount of energy, can differ significantly in brightness.

Consider the characteristics of LEDs in large lanterns, searchlight type :

Name
Photo
U, B.	5,7; 8,55; 34,2;	6; 12;	3,6	3,5
I, Ma.	1100; 735; 185;	2500; 1250	5000	9000...13500
P, T.	6,3	8,5	18	20...40
Operating temperature, ° C
Light stream, lm	440	510	1250	2000...2500
Glow angle, °	115	120	100	90
Color rendering index, RA		70-90	80-90	80-90

Sellers often indicate not the full name of the diode, its type and characteristics, and abbreviated, somewhat different diguristic labeling:

• For XM-L: T5; T6; U2;
• XP-G: R4; R5; S2;
• XP-E: Q5; R2; R;
• for XR-E: P4; Q3; Q5; R.

The lantern may be called "the EDC T6 lamp", information in such brevity is more than enough.

Repair of lanterns

Unfortunately, the price of such lanterns is rather large as the diodes themselves. And it is not possible to have the opportunity to purchase a new lantern, in case of breakdown. Let's figure out how to change the LED in the flashlight.

For repair, the flashlight requires a minimum set of tools:

• Soldering iron;
• flux;
• solder;
• screwdriver;
• multimeter.

To get to the light source, you need to unscrew the head of the lantern, it is usually fixed on the threaded connection.

In the mode of checking diodes or measuring the resistance, check the operation of the LED. To do this, touch the shoes black and red to the LED outputs, first in one position, and then change the places red and black.

If the diode is well - then in one of the positions there will be low resistance, and in the other - high. Thus, you define that the diode is in advance and conducts current only in one direction. During inspection, the diode may radiate a weak light.

Other provisions in both positions there will be a short circuit or high resistance (cliff). Then you need a diode replacement in the lantern.

Now you need to drop the LED from the lantern and, observing the polarity, to have a new one. Be careful when choosing a LED, take into account its current consumption and voltage to which it is designed.

If you disseminate these parameters - at best, the flashlight will quickly sit down, at worst - the driver will fail.

The driver is devices for powering the LED stabilized current from different sources. Industrially manufactured by drivers for nutrition 220 volts, from automotive power grid - 12-14.7 volts, from Li-Ion batteries, such as size 18650. The driver is equipped with most powerful lights.

Increase the power of the lantern

If you are not satisfied with the brightness of your lantern or you figured out how to replace the LED in the flashlight and wanted to upgrade it before buying heavy-duty models to learn the basic principles of LED work and restrictions in their operation.

Diode matrices do not like overheating - this is the main postulate! And the replacement of the LED in the flashlight to a more powerful can lead to such a situation. Pay attention to the models in which more powerful diodes are installed and compare with your if they are similar in size and design - change.

If your flashlight is less - additional cooling will be required. We wrote more about making radiators with your own hands.

If you try to install in a miniature flashlight keychain such a giant as Sree Mk-R, it will quickly fail with overheating and it will be in vain tools. An insignificant increase in power (for a couple of watts) is permissible without the modernization of the lantern itself.

Otherwise, the replacement process of the LED brand in the flashlight is more powerful - described above.

Lanterns Police.

LED flashlight police with a shocker

Such lights shine bright and can act as self-defense. However, there are problems with LEDs.

How to replace the LED in a police flashlight

A wide range of model range is very difficult to cover under one article, but can be given general repairs recommendations.

1. When repairing a flashlight with a stoker, be careful, it is desirable to use rubber gloves to avoid shock.
2. Flashlights with dust galloping collected on a large number of screws. They differ in length, so make a note from where you twisted one or another screw.
3. The optical system of the lantern POLICE allows you to adjust the diameter of the light spot. When disassembling on the case, make marks in what position it was the details before removing, otherwise it would be difficult to put a block with a lens back.

Replacing the LED, voltage converter unit, driver, battery is possible with the use of a standard soldering kit.

What are the LEDs stand in chinese lanterns?

Many products are now bought on Aliexpress, where you can find both original products and Chinese copies that do not meet the declared description. The price for such devices is comparable to the original price.

In the flashlight, where the CREE LED is declared, it may not really be, at best there will be a diode of frankly other type, in the worst one that will be extremely difficult in the original.

What could this be entrusted? Cheap LEDs are performed in low-tech conditions and do not issue the declared power. Have a low efficiency, from their enhanced heating of the housing and crystal. As it has already been said that overheating is the most evil enemy for LED devices.

This is because when heated through the semiconductor, the current increases, as a result of which heating becomes even stronger, the power stands out even more, it leads to a breakdown or breaking of the LED.

If you try and spend time searching for information, you can determine the originality of products.

Compare the original and fake Cree

LatticeBriend is a Chinese manufacturer of LEDs that makes products very similar to Cree, probably this coincidence of designer thought (sarcasm).

Comparison of Chinese Copy and Original Cree

On the substrates, these clones look like this. You can see the variety of substrate forms for LEDs produced in China.

Substitution definition for LED

Fakes are made quite skillfully, many sellers do not indicate this "brand" in the product description and how LEDs are produced. The quality of such diodes is not the worst among the Chinese junk, but also far from the original.

Installing LED instead of incandescent lamp

Many in old things are dusting the boognets or lights on the incandescent lamp and you can easily make it LED. For this there are either ready-made solutions or homemade.

With a broken light bulb and LEDs, if you add a little smelting and solder, you can make an excellent replacement.

Iron barrels in this case are needed to improve heat removal from LED. Next, you need to solder all the details to each other and secure glue.

When assembling, be careful - avoid closing the conclusions, the thermocons or a heat shrink tube will help. The central contact of the lamp need to spill - a hole is formed. Throw through it the output of the resistor.

Next, you need to solder the free output of the LED to the basement, and the resistor to the central contact. For a voltage of 12 volts, a 500 Ohm resistor is needed, and for a voltage of 5 V - 50-100 ohms, for powering from Li-Ion 3.7V battery - 10-25.

How to make an incandescent LED bulb

Pick up the LED for the flashlight is much more difficult than replacing it. It is necessary to take into account the mass of the parameters: from brightness and dispersion angle, before heating the case.

In addition, it is impossible to forget about the power supply for diodes. If you master everything described above - your devices will shine for a long time and efficiently!