What is the impact of charging an electronic product with an oversized charger?

Issue Time:2006-11-24
With the increase of electronic products around us, daily charging has become the norm. When charging, we often have mixed chargers, such as charging the iphone with the Ipad charger. So what impact does this have on the battery of the electronic product? If it is charged with the charger of the excess standard, then the power adapter manufacturer will discuss this issue with everyone.

The parameters above the charger are called rated voltage and rated current. The rated voltage refers to the operating voltage of the charger when it is charging. The rated current indicates the maximum current allowed when the charger is charging. The internal resistance of the battery increases during the charging process, so the current is different from the voltage, and the basic trend is getting smaller and smaller, which is why the front charge is very fast when charging, and the more difficult it is to charge later.

Therefore, the way of charging the battery is actually constant voltage charging. When the voltage and current parameters are accurate, when the charger is mixed, the first thing to ensure is that the voltage must be completely consistent. Because the voltage is too high, it will overcharge and cause an explosion or fire. If the voltage is insufficient, it will not be charged.

For current, ensure that the rated current of the charger you are replacing is greater than or equal to the original charger current, because the rated current is the maximum current allowed, but it does not mean that the maximum value will be reached when charging. When your battery is charged, the internal resistance is reduced and the current is automatically reduced. It is not charged at a constant current with a rated current. However, it is not possible to charge less than the original charger, because the output capability of the replaced charger is not enough at this time, and may not be filled or filled or the charging time is extremely long.

For example, many mobile phone chargers output 5V-1A, while the computer USB port is 5V-500mA. So you can use the charger to charge, or you can use the computer USB, but the computer is obviously slow. Therefore, if you charge with a super-standard charger, you should pay attention to the current can be changed, the voltage must not work, I hope the power adapter manufacturer's advice can help everyone.

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