TOO CHEAP! 18650 Internal Resistance and Battery Capacity Meter Only 150k!
The internal resistance of a battery is a measure of the resistance of current inside the battery, or in other words, it is the level of resistance between the two terminals of the battery, measured in milliohms. In the field of digital applications, low battery internal resistance is considered an important fundamental factor. Low internal resistance means the battery is able to provide energy more efficiently.
For the battery charging process, low internal resistance helps extend usage time and minimizes the temperature generated on the battery. In cases where the battery is charged and discharged daily over a long period of time, if the internal resistance increases, the battery performance will gradually decrease, and this may lead to the battery no longer being able to charge. This causes a voltage drop on the battery when in use, especially when the internal resistance is high, leading to a rapid decrease in battery voltage, causing the phenomenon of virtual battery capacity.
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