The answer to 'when to replace EV charger' is that you should typically replace your EV charger every 5-10 years, or sooner if it becomes damaged, worn, or no longer functions properly. EV chargers are designed to last for many years, but like any electrical equipment, they can experience normal wear and tear over time.
Some key signs that it may be time to replace your EV charger include if it's no longer charging your vehicle efficiently, if the charging cable is frayed or damaged, or if the charger itself is showing signs of wear like cracks or discoloration. It's also a good idea to replace your charger if you're upgrading to a newer EV model that requires a different type of charger.