Cob led, also known as a chip on board led, is found in a wide range of products. Wireless rechargeable led lights with remote control, on the other hand, are great for on-the-go gadgets.

If you want a long-lasting rechargeable battery, this type of cob led may be your best rechargeable cob light alternative.

The best rechargeable cob light is becoming more popular in photography as designers see the advantages of employing them over regular led lights, which produce up to 25% less heat.

How to select the best led cob package

Let us now go through some of the factors to consider while selecting portable cob rechargeable handheld light:

Voltage applied forward

This is the voltage required for the led to conduct electricity and light up. A typical 20-watt cob led requires a forward voltage of 29v dc to 32v dc.

Current flowing forward

When a forward voltage is provided to a led, it is the current that flows through it. A typical 20-watt cob led consumes around 640ma. As a result, you should select a suitable current driver based on the led package’s rating.

Energy usage

Power consumption in watts, lumen output, color temperature, operational temperature range, and other parameters can be selected for led light packing. Led bulb power ratings should not be confused with power ratings in conventional lighting systems.

When compared to conventional lighting products, led bulbs with lower wattage ratings can provide higher light output or lumen output, as demonstrated in the table on the preceding page.

Flux of light

It is used to calculate the total quantity of visible light produced by your lighting source. Lumen is the si unit of luminous flux (lm). When a cfl is compared to a standard white led, the latter is far more energy efficient and consumes far less electricity.

The table compares the lumens generated by a led bulb to those provided by various illumination sources. When compared to other led technologies, COB rechargeable light has a significantly higher lumen-per-watt ratio.


This setting determines the led’s performance. It refers to the cob led continuous light with battery ability to convert power into visible light.

Thus, effectiveness is defined as total lumens per watt. For example, if a nine-watt light bulb has 800 lumens, it has an effectiveness of around 90 lumens per watt.

Cri (color rendering index)

Cri is a light quality metric that indicates how effectively a light source duplicates color to the human eye. White light consists of all of the colors in the light spectrum.

In daylight, we can see the color of every solid thing. Natural daylight has the greatest cri rating, however artificial light sources cannot create all of the light spectrum’s colors. The standard criteria for normal home usage is a cri of 80.

Cct (correlated color temperature)

Cct is measured in kelvin (k) and refers to the warmth or coolness of the white light produced by the led.

The colder the light seems as the temperature rises. A 5000k led bulb does not literally heat up to 8500°f, but it does provide a pleasant glow.

Some led bulbs have a cct of higher than 6000k, which causes the light to be more blue than white. Warm light outdoor with rechargeable battery light is roughly 2700k, neutral white is around 4000k, and cool white is around 5000k or more.

Led cob lifespan

Another critical criteria is the duration in hours. Some led bulbs have a lifespan of 50,000 hours. So, if you use it for eight hours every day, it may last 17 years.

The life of the battery operated cob led light is also affected by the heatsink utilized. Cob technology provides the ideal conditions for effective cooling, which boosts efficiency and extends the lamp’s total life.

Angle of the beam

The dispersion of light to your surrounds is referred to as a bulb’s beam angle. A spotlight in a kitchen, for example, will have a beam angle of between 35 and 60 degrees.

When connected to lamps, standard and candle-shaped bulbs require the widest beam angle available. However, the beam angle should preferably be more than 200 degrees.

A larger beam angle would be required to properly spread light to more regions. When you want the light to be more focused and bright, a narrow beam angle is necessary. Correctly adjusting beam angles may dramatically improve the lighting impact in a space.

Temperature near the junction

It is the highest working temperature of an electronic device’s real semiconductor. Normally, this temperature is listed in the datasheet. This figure will be required for calculating the case-to-ambient thermal resistance for a particular power dissipation. This will assist you in selecting an adequate heat-sink.

Cob leds are still in use

Many publicly available industry reports say that demand for rechargeable cob led light is expanding in the worldwide lighting market. Led cob may already be found in a variety of consumer and industrial devices such as bulbs, downlights, tube lights, street lamps, bay lights, and others. For the time being, one can confidently claim that their future appears bright.


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