Four hours.
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Universal charging is relatively slow,4 hours may be able to full.
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Note the following:
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1) Find the output voltage and current of the universal charge, generally on the back of the universal charge, the front is written output, the unit of voltage is V volts, and the general unit of current is mAh mah.
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2) Find the input voltage and current on the camera battery, if the voltage required by the battery is the same as that of the universal charge, and the input current is greater than or equal to the current of the universal charge, then the battery can be charged with the universal charge (some batteries have power protection and can only use the original charger such as SONY's battery, the camera will report an error directly after the universal charge)