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Page of technician Nu: https://bit.ly/3psNGcN Explanation: Do it with a coil to measure the amps. When the current is full, it will show the amp value as 0, indicating that it is full. For battery charging, the car charging value is 10% of the amps, which is, let's say, 10 amps. The charging current is at its lowest, so it must be 2 amps. If the current is high, it will damage the battery. Don't forget to comment politely and respect the readers. ////////////////////////////////////////////////////////////////////////////////////////// #Technician Nu is wonderful #Make a battery charger from a PSI box #Make a 12 volt battery charger