I'm connecting a 40 V battery to a DC-DC converter that can step down a voltage from 40 V to 8 V. When I connect the terminals the battery gives off a spark. I've browsed some sites which say that this huge inrush current is due to the capacitors charging up, but I haven't found a practical solution to the problem. How can I suppress the spark?
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\$\begingroup\$ electronics.stackexchange.com/questions/507530/… \$\endgroup\$– BeB00Commented Apr 29, 2022 at 8:36
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Add a switch so that the spark is not on the battery terminal.
Even a fuse that is remote to the battery will make this safer.
I have seen batteries explode and cover the area in acid so it is not a situation to be taken lightly.
I had a similar issue when connecting my son's 1.5kW inverter to the 24V battery bank. I fitted one of those circuit breaker fuses and it now behaves well.
answered Apr 29, 2022 at 8:38