Practical battery internal resistance tester
With the popularization of electronic devices and the enhancement of portability, batteries have also been widely used as an important energy source for electronic devices.
However, as the battery life increases, its performance will gradually decline, and one of the important reasons is the increase in the internal resistance of the battery.
In order to understand the health status of the battery in time and predict the life of the battery in advance, it is particularly important to develop a practical battery internal resistance tester.
Battery internal resistance refers to the internal voltage drop generated by the current inside the battery in the open circuit state, which is one of the important indicators to measure the performance of the battery.
The magnitude of the internal resistance directly affects the discharge performance, capacity and life of the battery.
Therefore, by measuring the internal resistance of the battery, it is possible to know the health status of the battery in time, the service life of the battery.
The traditional method of testing the internal resistance of a battery is usually to use the current charge-discharge method, which calculates the internal resistance by applying an electric current between the positive and negative terminals of the battery and then measuring the voltage drop.
This method requires the use of test equipment and complex circuit connections, which are not only complex to operate, but also have certain safety risks.
In addition, this method requires the battery to be discharged to a certain extent, which has a certain impact on the life of the battery.
In order to solve the shortcomings of traditional testing methods, a new type of battery internal resistance tester has appeared on the market, which adopts the non-contact measurement principle, which can achieve accurate measurement of battery internal resistance, easy to operate, safe and reliable.
This battery internal resistance tester uses electromagnetic induction technology to indirectly estimate the internal resistance of a battery by measuring changes in the electromagnetic field around the battery.
It does not need to be in direct contact with the battery, just hold the tester close to the battery, and the measurement can be taken.
This not only improves the accuracy of the test, but also improves the safety of the test.
Compared with traditional test methods, this battery internal resistance tester has several advantages:
First, it is easy to operate.
Measurements can be made by simply placing the tester close to the battery, without the need for complicated connections and setups.
Even non-people can easily grasp it.
Second, it is safe and reliable.
Due to the non-contact measuring principle, there is no need to discharge the battery, which avoids the impact of over-discharge on the life of the battery and reduces safety risks during operation.
Third, the test is accurate.
This battery internal resistance tester uses electromagnetic induction technology to accurately measure the internal resistance of the battery and provide reliable test results.
Fourth, it is widely applicable.
This battery internal resistance tester is suitable for various types of batteries, including lithium batteries, lead-acid batteries, etc.
Whether it is a domestic battery or an industrial battery, it can be tested.
Fifth, the cost is low.
Compared with traditional test equipment, this battery internal resistance tester is more accessible to the people and can be accepted by ordinary users.