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Work In -40℃ Environment

January 5, 2024

Where is the 4G version of the telephone used?

In tunnels, highway construction, subway construction and other projects, communication equipment is an important part. It not only plays a role in daily communication, but also needs to ensure normal work in emergency situations. Many customers choose the 4G version of the weatherproof phone. Based on the characteristics of weatherproof, it is waterproof and dustproof and is more suitable for harsh environments than ordinary phones. Compared with the ANALOG and VOIP versions, the 4G version does not require line construction for short-term projects. As long as it is within the coverage of the 4G operator, you can make calls. This can save a lot of installation costs and maintenance costs, while saving resources.


Why does the battery stop working after a while?

However, in this case, due to the instability of the temporary circuit, the phone cannot communicate in an emergency and cannot deliver messages to the outside world immediately. We have to consider adding backup power to the phone or directly using the battery to power the phone. What cannot be ignored is that if you want the battery to achieve the desired effect, you must abide by the original properties of the battery.


For example, if the battery is used within the ambient temperature range that the battery can tolerate, but exceeds or falls below the battery's tolerable temperature, the battery will quickly run out or be forced to shorten its service life, and may even be unable to meet the needs of short-term projects. The working temperature of batteries currently on the market is in the range of -20℃-50℃, which is acceptable in most countries but does not include all countries.


In addition, battery manufacturers also recommend charging and discharging the battery regularly, because the battery will continue to discharge if it is installed in the device and not used for a long time and enter the overvoltage protection program to protect electronic components. Batteries that enter the overvoltage protection program require professionals Charging can be resumed only by reactivating the circuit, which is a complex and costly process.


How to break these limitations? How to make customers feel more confident in choosing J&R Technology's products and solutions?

First of all, we must consider countries with temperatures below minus 20 degrees. After testing a variety of batteries that can withstand a wider temperature range, to ensure that they will not be easily affected by the ambient temperature and quickly lose power, we determined a battery which can withstand minimum operating temperature -40 degrees. This means that J&R's products can work normally in a -40°C environment.


Referring to the more popular practices in the market, adding an activation board to the circuit is a stable and effective way for batteries that enter the overvoltage protection program, so that the batteries that enter the overvoltage protection can still be charged and used normally.


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