Last modified 9th May 2026
Author Matt Tinkler
If you’re new to EV charging, you may wonder what happens when the battery is fully charged. With combustion engines, you just had to wait for the telltale clunk sound at the fuel pump to know that your car was full. But with an electric car, it’s a little different. You may wonder whether you have to keep an eye on how it’s progressing and manually stop charging, or is it smart enough to stop charging automatically when it’s full. We’re revealing all in this guide.
The good news is that you won’t have to watch over your EV charging progress like a hawk.
That’s because electric cars have built-in battery management systems that prevent overcharging.
When the battery of an electric vehicle reaches full charge, the system will either stop the charging process or switch to trickle charging, which maintains the battery at full capacity without overcharging it.
This helps to prolong the life of the battery. Some EV owners also choose to set their vehicle to stop charging at 80% to further conserve the battery. In general, keeping the battery charged between 30% and 80% is recommended to maintain its state of health.
No. Most EV batteries will contain charge controllers that automatically disconnect the battery once it’s fully charged. That means you don’t have to worry about accidentally overcharging your EV battery.
If you want to keep an eye on the progress of your charging, it’s good to know that most EVs indicate their charge status with a light system. These are most often placed on top of the dashboard or around the charging point. The meaning of the lights can vary, so it’s best to consult your owner’s manual to find out how to track the progress of your EV charging.
Want to find out more about our EV charging installation in Peterborough? We’ve got you covered with our informative articles written by the experts at Impra Charge.