Chargers with a current of 2.4A are fast chargers.
Its rated voltage is generally five volts, and its power is usually about 12W, but the fast charging efficiency of this power is relatively low, compared with some high-specification fast charging, there will be a certain gap in the charging speed
The 2.4a charging head is not a fast charge, but a standard charger.
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2.4 ampere current charger, the output voltage is 5 volts, that is, the actual output power maximum 12 watts, which is not up to the standard of fast charger. The fast charger needs to support the corresponding fast charging protocol, and the charger output voltage can be multi-voltage output according to the charging protocol, and the charger that indicates more than 18 watts may be a fast charger.
The car 2.4a is a fast charge. Lithium batteries do not require special discharge before charging. Some fast chargers, when the signal light changes, only means that it is 90% full, and the charger will automatically change to charge the battery at a slow speed. However, in general, as long as the display is full, it can be removed.
In order not to damage the battery life, it is best to charge slowly when charging; The time need not be too long.