OEM ODM FULL CERTIFICATION CAR CHARGER WALL CHARGER WIRLESS CHARGER CUSTOMIZED MSH

Do wireless charging mobile phones emit radiation?丨MSH

2022-06-23

Do wireless charging mobile phones emit radiation?丨MSH

The radiation of the wireless charger is calculated by taking a lithium battery with a capacity of 1000mAh as an example. 50% charging capacity is about 1.7~1.8Wh. If it is required to be fully charged in about two hours, the maximum charging power must be at least 1W (the maximum power of a GSM900 mobile phone is about 2W). Since the wireless charging method of mobile phones is to place the mobile phone above the charger instead of inside, the radiation leakage rate may not be small.

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Does high current charging affect the battery?丨MSH

If the current is too high, it will burn the machine, and if it is too small for a long time, it will affect the life. When the charging current of the charger is too large, the heat of the mobile phone and the battery will surge, and even damage the mobile phone components, and even cause an explosion.

The effect of the output current of the charger on the battery丨MSH

1. There is a difference between fast charging and slow charging. Generally, fast charging has an impact on the battery, but it is not too obvious for lithium batteries; charging current is usually one-tenth or half of the capacity of lithium batteries. Yes, for example, a 1000mAh battery can be charged at 100-500MA, but if the current is too large, the charger will heat up, which is likely to cause a safety accident. 2. For batteries of different capacities, the charging current of the charger is required, because the charging current that is too small cannot be charged. The so-called trickle charging can supplement the battery capacity, which means that when the battery is about to be fully charged, the trickle charging current is used to make up for the remaining battery capacity of the battery and the battery self-discharge afterward. , Using a small current, it is basically impossible to charge, not to mention the loss of the battery, and the extended life. 3. At present, most of the chargers on the market belong to the chargers that use the complex voltage method, that is, fast charging, and the charging current is changed. 1.5A means that the maximum current is 1.5A, but it will gradually drop to 1A and below with time and battery voltage changes, and 1A means that the current starts to drop from 1A, and its downward trend is uncertain.

How does the current of the mobile phone charger affect the mobile phone?丨MSH

The mobile phone is rated at 5V 1A, and now I use a charger with 5V 2A to charge the mobile phone. Excuse me, what is the impact on the mobile phone? Answer 1, the voltage is the same, the mobile phone is a constant load, and the actual current is the same as the original charger. No effect. Answer 2, the current is too large, which will accelerate the aging of the battery and the mainboard of the mobile phone, and even explode. What do you think about this issue?

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