Another factor that can have a significant influence on charge speed is the temperature of the battery. A battery works optimally if the temperature is not too high and not too low. In practice this is usually between 20 °C and 30 °C, although some cars function best with a battery around 40 °C.In winter a battery can get very cold, for example if the vehicle is parked outside. This can cause charging to be (much) slower. Conversely, a battery can become very warm during a hot summer day and this can also cause charging to go slower.The influence of the temperature on the charge speed is different for each vehicle model. Some models are equipped with thermal management for the battery. This way the battery can be cooled or heated depending on the circumstances,. However, on a cold day, it can take a while before a battery pack is completely heated up.Fast charging is also an effective way to heat up your battery.