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As a smartphone charger, it can be roughly divided into two categories: ordinary chargers with charging power less than or equal to 15W and fast chargers with charging power greater than 15W.
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Relative to the current technical standards, fast charging appliances must be backward compatible with non-fast charging devices, so we often see 5V\/2A, 9V\/2A and other words on the label of the charger.
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When a smartphone is connected to a fast charger, a \"handshake agreement\" is entered into between the charger and the phone to ensure that the standard supported by the phone is exactly the same as that provided by the charger.
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Taking 18W fast charge as an example, the process is roughly like this:
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The phone is connected to the 18W charger, which provides 5V voltage and 2A current for the phone, and asks the phone: \"Is 9V\/2A supported?\"
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If the phone answers \"Yes\
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If the phone answers \"No\
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In this way, the mixed charger will not cause any harm to the phone, but it does not mean that this way does not have any drawbacks.
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What are the disadvantages of mixing chargers
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Although the mixed charger will not affect the normal charging of the mobile phone, it may reduce the charging efficiency for mobile phones using different fast charging standards.
Of course, it can be mixed, but the charging speed is different.
You can! Just one charging fast, one charging slow