The naming of the San Diego football team had nothing to do with a military or an electrical charge.
The team was named by the original owner, Barron Hilton, who called them the Chargers after a credit card.
Hilton also owned the Carte Blanche credit card.
Although to us carte blanche might be “white card,” to the French it means “blank sheet,” to be used like a blank cheque, preferably to include a ticket to watch the San Diego Chargers.