Yes, high-power chargers can charge low-power mobile phones. The power of a charger is the product of current and voltage, expressed in watts (W). On the packaging of the charger, we can find the values of output voltage and current to calculate the power of the charger.
When we connect a low-power phone to a high-power charger, the charger will control the output voltage and current based on the current required by the phone. A phone will only absorb the electricity it needs, without exceeding its battery capacity. Therefore, high-power chargers can charge low-power mobile phones and also complete the charging process faster.
However, we need to carefully choose chargers based on the needs of our phones. If an oversized charger is used, it may damage the phone battery or circuit. It is recommended to use a suitable charger compatible with the phone for charging.
