Q5e Charging Time 120V
07-29-2020, 12:48 AM
#1
AudiWorld Junior Member
Thread Starter
Q5e Charging Time 120V
My new Q5e is taking forever to charge from our garage's 120V outlet. Even after plugging it into the 120V 20A outlet I discovered we had, it still takes 24 hours to charge the battery. Does anyone else have this problem? The dealer said it's supposed to take 6 hours at most on a 120V outlet. Our house is pretty new too so I don't believe it's a wiring issue. Thanks!
07-29-2020, 03:37 AM
#3
I don’t know where they got that information they sent you but it’s wrong.
Many people have documented that on a standard 120v outlet it will take 21hrs+ to charge the battery.
The part about the 240v 2.5hr is correct.
Many people have documented that on a standard 120v outlet it will take 21hrs+ to charge the battery.
The part about the 240v 2.5hr is correct.
07-29-2020, 06:29 AM
#4
Yeah, not sure where that came from, but the 6.5 hour was the originally quoted for European standard household outlets which run at 220/240 Volts and can get you to 6.5 hour charge.
Looking at the math, you'll never get 6.5hrs with 120v at 16 amps (max on a 20amp breaker) into a 14.1kWh battery. At 100% Efficiency that can only provide 1.92 kWh charging, and your looking at 7.34 hours in a perfect math world. No way it's anywhere close to that, and charging usually slows down as you get closer to full. On other threads the math to 24+ hours is actually figured out, believe the charger may actually also be limited to 8 amps on 120V outlets.
I have a Q5e and a Chevy Volt and knew that the it would take a full day to charge from 0 on the standard 120v outlet.
Get a 240v NEMA 14-50 outlet installed, it's worth the money and you'll charge much faster and the car will be much more efficient and useful. It's unfortunate dealers don't have this information on hand and make sure customers understand what's needed to really get the benefit out of this car.
Looking at the math, you'll never get 6.5hrs with 120v at 16 amps (max on a 20amp breaker) into a 14.1kWh battery. At 100% Efficiency that can only provide 1.92 kWh charging, and your looking at 7.34 hours in a perfect math world. No way it's anywhere close to that, and charging usually slows down as you get closer to full. On other threads the math to 24+ hours is actually figured out, believe the charger may actually also be limited to 8 amps on 120V outlets.
I have a Q5e and a Chevy Volt and knew that the it would take a full day to charge from 0 on the standard 120v outlet.
Get a 240v NEMA 14-50 outlet installed, it's worth the money and you'll charge much faster and the car will be much more efficient and useful. It's unfortunate dealers don't have this information on hand and make sure customers understand what's needed to really get the benefit out of this car.
07-29-2020, 08:37 AM
#6
AudiWorld Junior Member
Thread Starter
Yeah, not sure where that came from, but the 6.5 hour was the originally quoted for European standard household outlets which run at 220/240 Volts and can get you to 6.5 hour charge.
Looking at the math, you'll never get 6.5hrs with 120v at 16 amps (max on a 20amp breaker) into a 14.1kWh battery. At 100% Efficiency that can only provide 1.92 kWh charging, and your looking at 7.34 hours in a perfect math world. No way it's anywhere close to that, and charging usually slows down as you get closer to full. On other threads the math to 24+ hours is actually figured out, believe the charger may actually also be limited to 8 amps on 120V outlets.
I have a Q5e and a Chevy Volt and knew that the it would take a full day to charge from 0 on the standard 120v outlet.
Get a 240v NEMA 14-50 outlet installed, it's worth the money and you'll charge much faster and the car will be much more efficient and useful. It's unfortunate dealers don't have this information on hand and make sure customers understand what's needed to really get the benefit out of this car.
Looking at the math, you'll never get 6.5hrs with 120v at 16 amps (max on a 20amp breaker) into a 14.1kWh battery. At 100% Efficiency that can only provide 1.92 kWh charging, and your looking at 7.34 hours in a perfect math world. No way it's anywhere close to that, and charging usually slows down as you get closer to full. On other threads the math to 24+ hours is actually figured out, believe the charger may actually also be limited to 8 amps on 120V outlets.
I have a Q5e and a Chevy Volt and knew that the it would take a full day to charge from 0 on the standard 120v outlet.
Get a 240v NEMA 14-50 outlet installed, it's worth the money and you'll charge much faster and the car will be much more efficient and useful. It's unfortunate dealers don't have this information on hand and make sure customers understand what's needed to really get the benefit out of this car.
07-29-2020, 08:59 AM
#7
AudiWorld Member
Interesting. We have a Honda Clarity as well with a 25.5 kwh battery and it only takes overnight to charge with a regular 120V connection. Must be the type of charging connector provided.
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07-29-2020, 09:23 AM
#8
AudiWorld Junior Member
Thread Starter
I saw similar numbers from BMW which made me think something is wrong with my charging connector. Still banking that something is wrong with my charging connector unit. 6 hours was ideal since I could just charge it overnight. 2.5 hours is honestly a little unnecessary for my needs so I"m not sure I want to spend the money to rewire my garage.
07-29-2020, 09:55 AM
#9
I saw similar numbers from BMW which made me think something is wrong with my charging connector. Still banking that something is wrong with my charging connector unit. 6 hours was ideal since I could just charge it overnight. 2.5 hours is honestly a little unnecessary for my needs so I"m not sure I want to spend the money to rewire my garage.
07-29-2020, 10:10 AM
#10
I have a Chevy Volt as well with a 18.4 kWh battery and with the charger that came with it that support 120V at 12amps, it can charge in 15-16 hours.
If the charger the Clarity or BMW have can support 120V at 12amps or more, then yes charging overnight is very possible (10-12 hours), even with larger batteries. The limit is that the US Audi charger limits it to 120V at 8 amps which slows it down a lot.
You could go to Clipper Creek (or other brand) and get a 120V charger that supports 12amps or more (like this https://store.clippercreek.com/level...arging-station ), and be able to charge over night.
But instead of investing $400 into another Level 1 charger, first talk to an electrician about cost to install a NEMA 14-50 outlet and be able to take advantage of the Level 2 capable charger that came with your car. My guess is it's not to much more that $400 to have the outlet installed. When I had mine installed, I actually had to upgrade the house to 200amp service, which also meant a new main fuse box, plus added a direct wired Level 2 charger, and nema 14-50 240V outlet, and a dedicated 20 amp 120V outlet. Having all that work done only cost $2000 (it was an older house so need to give it some upgrades for an EV world).
If the charger the Clarity or BMW have can support 120V at 12amps or more, then yes charging overnight is very possible (10-12 hours), even with larger batteries. The limit is that the US Audi charger limits it to 120V at 8 amps which slows it down a lot.
You could go to Clipper Creek (or other brand) and get a 120V charger that supports 12amps or more (like this https://store.clippercreek.com/level...arging-station ), and be able to charge over night.
But instead of investing $400 into another Level 1 charger, first talk to an electrician about cost to install a NEMA 14-50 outlet and be able to take advantage of the Level 2 capable charger that came with your car. My guess is it's not to much more that $400 to have the outlet installed. When I had mine installed, I actually had to upgrade the house to 200amp service, which also meant a new main fuse box, plus added a direct wired Level 2 charger, and nema 14-50 240V outlet, and a dedicated 20 amp 120V outlet. Having all that work done only cost $2000 (it was an older house so need to give it some upgrades for an EV world).