Why does a car battery charger give 16 volts?
Hello! The voltage at the terminals of the charger (charger type SV-15, there are no current and voltage adjustments) for the car battery when measured with a multimeter was about 11.5 V. When connecting the terminals of the charger to a battery with a capacity of 60 Ah, the voltage at the terminals increased to 16.1 V. The current value on the ammeter of the charger immediately after connecting the battery is approximately 10-12 A, after 5-10 minutes it decreases to 2.5-3 A. Why does the voltage increase? Can this charger be used to charge the battery, will 16.1 V lead to battery breakdown?
Hello! All chargers at maximum currents produce about 16A. I have a Soviet with adjustment and the voltage is also about 16.1-16.5 volts when charging. The voltage rises when connected to the battery, because charging "sees" the load, and increases the voltage until a certain current flows to the battery. It’s “automatic” for you, therefore it regulates everything independently according to the algorithm set by the manufacturer.
Therefore, do not worry, everything is in order with you. By the way, in charging, the Wester CB15 charging instructions even have a graph of how the voltage and current change at different stages of the charge.
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