Because the battery will cease charging when it reaches the designated capacity, there is little harm in keeping your Tesla plugged in at all times. In fact, there may actually be some benefits to this approach. Tesla recommends keeping the battery charged. The battery performs better when it is plugged in all the time. Therefore, it is best to plug your Tesla in every night rather than only charging when the battery gets low. Not only will this help keep you from constantly worrying about how much energy your car has left, but it will also help your battery perform better and last longer. This means if you are going to leave your car at home for weeks or days at a time, it is far better to leave it charging. Even when your car is not running it will lose some power, which means if you leave an electric car sitting for months it will eventually drain to zero. It is not good for your car’s battery to hit zero! It is best to keep your battery above 30% capacity at all times, which means that it is best to have your car plugged in when you are not using it, especially for extended periods of time. Just make sure that you have the battery limit set to below 100% when doing this.