The time required to complete a charging session depends on several factors.
Presto primarily offers services at DC fast chargers. DC fast chargers typically have charging rates of 50 kW to 350 kW, but some may be slower or faster. Some markets have slower, AC charger units with a maximum charging rate of 6.6 kW. Some of these factors are:
Your car's battery size and start state of charge percentage (% SoC)
The maximum charging rate of the charger
Your car’s maximum charging rate and preset charging limit
Ambient temperature
Ultimately, you should rely on your vehicle to answer this question. Many cars will display an “estimated time to completion” that factors in all these variables. For most modern electric vehicles, charging at a DC fast charger takes between 20 and 50 minutes to go from 20% SoC to 80% SoC.
Please note: The actual speed may vary and be slower than the maximum rate. Also, once your vehicle reaches 80% charge, the charging speed will slow down significantly.