How long does it take to charge an EV ?

How long does it take to charge an EV ?

Jason ZhengNov 12, '18

This is something like asking how long it will take to fill a swimming pool with water. It depends on a few things, like the pool size and the amount of water you have set to come out of the hose. If you turn up the water, it will fill faster. If you have a large pool it will obviously take longer to fill than a small pool at the same rate. Pretty simple stuff, right?

There are similar variables that apply when determining the amount of time to charge an electric vehicle. Determining the charge time for your BEV (battery electric vehicle) or PHEV (plug-in hybrid electric vehicle) is simple with 3 key pieces of information:

Vehicle Acceptance Rate (aka the car’s charger, in kW)
Vehicle Battery Capacity (in kWh)
Charging Station Delivery Rate (aka the stations’ max output capacity, in kW)
Here are some examples using the chart below:

A) A Nissan Leaf (2011-2012) EV charging with BougeRV Level 2 EV Charger (240V, 16A):

Check the Vehicle Acceptance Rate versus the Charging Station Delivery Rate for the BougeRV Level 2 EV Charger. Which is lower? That will be your limiting factor. The Vehicle Acceptance Rate of the Nissan Leaf (2011-2012) is 3.3 kW. BougeRV Level 2 EV Charger Delivery Rate is 3.8 kW. Use 3.3 kW because it is the lower of the two numbers (it is the maximum the vehicle will draw).
Divide the battery capacity by the lower number from above. Nissan Leaf (2011-2012) battery size is 24kWh. Divide 24 kWh by 3.3 kW. The result is 7.27 hours to recharge the battery pack from empty to full.


B) Fiat 500e and BougeRV Level 2 EV Charger (240V, 16A):

Check the Vehicle Acceptance Rate versus the Charging Station Delivery Rate for the BougeRV Level 2 EV Charger. Which is lower? That will be your limiting factor. The Vehicle Acceptance Rate of the Fiat 500e is 6.6 kW. The BougeRV Level 2 EV Charger Delivery Rate is 3.8 kW. Use 3.8 kW because it is the lower of the two numbers (it is the maximum power the charging station is capable of delivering).
Divide the battery capacity by the lowest number from above. Fiat 500e battery size is 24kWh. Divide 24 kWh by 3.8 kW from above. The result is 6.31 hours from empty to full.

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