What is the difference between flash charge and fast charge?

There is little difference between flash charging and fast charging, and the main differences are as follows:

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First, charging speed: flash charging is faster than fast charging.

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Second, charging voltage: flash charging is low voltage fast charging, fast charging is high voltage fast charging.

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Third, the degree of heating: flash charging temperature is low, fast charging temperature is high.

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Four, safety performance: flash charging is safer than fast charging.