I use one to monitor the charging of an electric scooter. 24V lead battery (2 x 12V in series). Of course, the charger should output a little over 24 volts. Half expecting it to break, I was hoping that the output voltage would be less than the nominal 28V or 30V. The charge stayed steady at 30.2V for a few hours, which was confirmed by the multimeter. The picture shows how it was connected.
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