How many kw/h to charge from zero

[rickbessex]

yes, the larger refills are multiple chargers. Cheers.

I was able to add 6.2kWh on a charge point today.

 

[bbwagon]

just got a used 2018 A3 etron with 82k km, in Canada, nicely equipped technik ; at home i have a 220 v set up and using 12A charger (15A breaker) and takes 2hr 20min to charge...don't know how many kwh the car is accepting at home although i have one charge point charge of 5.7kwh.

at home I was getting on the dash 33/34km...as i try to figure out real life kms vs the calculated estimate....learning here...i was able to get 33km actual on 33km estimate...usually it doesn't come close but i had a longer 43km trip.

When i returned home and recharged the dash shows the highest amount i have seen todate, 39kms...probably the computer is using this recent actual to recompute to a higher figure...i don't know if the 39k km is the new norm or not? i don't imagine the battery all of a sudden gets to accept more than 5.7kwr....so the 39km to empty is probably based on the math on recent actual history .

lastly, i was able to see a document that shows the useable portion of the batter to be 6.2kwh....which contradicts the 7.0kwh useable i read in a self study guide of Audi's. But it sounds like ill be able to charge 6kwh max into the car. Here in BC Canada, I pay $.14 per kwh....so a charge to full is 84c CAD. Charge point charges .30/kwh CAD and i paid $1.75Cad for the 5.7kwh charge.

Regarding the 6.2kWh vs 7kWh usable, this is due to NA having a different BMS software which locks a higher percentage of the battery here than it does in Europe. You'll generally see people in Europe report a higher actual range achieved as well. Sucks but technically this larger reserve makes our cars more resilient to degradation. Oh well, my pack degraded severely already but I've got a replacement on the way now.

2017 in BC Canada as well

 

[rickbessex]

Regarding the 6.2kWh vs 7kWh usable, this is due to NA having a different BMS software which locks a higher percentage of the battery here than it does in Europe. You'll generally see people in Europe report a higher actual range achieved as well. Sucks but technically this larger reserve makes our cars more resilient to degradation. Oh well, my pack degraded severely already but I've got a replacement on the way now.

2017 in BC Canada as well

Thanks! What was your charge per full? 6 ish? How did you determine your battery needed replacement ? Warranty? Is this a self rest to do. Or indicators I can watch for? I have an OBD11 and it revels a lot of info under live data.

 

[bbwagon]

Hey Rick,

I posted a thread about this. Unfortunately, my home charger does not provide me with any data. My best guess is 3.5kWh and less due to the fact it takes just around an hour on 240v for a full charge from empty.

From what I gathered Audi Canada does not care much about degradation and reduction of range. The only sure way to get a replacement is with a hybrid-related fault code. We have 2 of these cars, both 2017 Technik. The other one is pretty similar to your car in battery performance - 8/8 bars and a high 30s estimated range. I wouldn't worry about it much, your battery is still very healthy.

 

[rickbessex]

3M2 Hey Rick,

I posted a thread about this. Unfortunately, my home charger does not provide me with any data. My best guess is 3.5kWh and less due to the fact it takes just around an hour on 240v for a full charge from empty.

From what I gathered Audi Canada does not care much about degradation and reduction of range. The only sure way to get a replacement is with a hybrid-related fault code. We have 2 of these cars, both 2017 Technik. The other one is pretty similar to your car in battery performance - 8/8 bars and a high 30s estimated range. I wouldn't worry about it much, your battery is still very healthy.

Is that hour time to charge on your new battery?? Or old problematic one?

The kWh flow for me to charge at home using my 240V 12A charger (not the Audi charger) is 2.3kWh. So onboard computer indicates 2.5hours to charge. Thus, i should get me about 5.8Kwh over that time frame.

This amount of current flow lines up with a public chargepoint station as i did at 5.7kWh once; then on another charge point was 6.2kWh. Only done public twice.

The BCCM recall /update 93M2 perhaps reduced the usable portion of the 8.8kWh battery but i don't know for sure nor do i know the exact numbers.....an older 2016 A3 e-tron Audi Self study guide said the battery has a useable 7 kWh and the same guide said 50km/fill. Most EPA number i discovered online indicates a range of about 16miles (26km). But that seems low....the same self study guide said State of Charge SOC is maintained at between 25% to 85%. Thus, my math then says SOC is maintained at between 2.2-7.5 kWh. They way i look at that is; the car will only drain done to 2.2kWh leaving 6.6kWh as the top up amount one can add.

 

[Cursh]

Wouldn't that be 5.3 KWH? 2.2-7.5?

Bummer no one is upgrading these packs. The Prius folks have 10x upgrade options for gen 1-3

Economy of scale I guess.

 

[rickbessex]

Wouldn't that be 5.3 KWH? 2.2-7.5?

Bummer no one is upgrading these packs. The Prius folks have 10x upgrade options for gen 1-3

Economy of scale I guess.

my guess is the battery will take up to 8.8kwh and use for operational items but the usable (or chargeable kWh) with the recall in NAR is 6.6kWh. but idk for sure.

 

[bbwagon]

Is that hour time to charge on your new battery?? Or old problematic one?

The kWh flow for me to charge at home using my 240V 12A charger (not the Audi charger) is 2.3kWh. So onboard computer indicates 2.5hours to charge. Thus, i should get me about 5.8Kwh over that time frame.

This amount of current flow lines up with a public chargepoint station as i did at 5.7kWh once; then on another charge point was 6.2kWh. Only done public twice.

The BCCM recall /update 93M2 perhaps reduced the usable portion of the 8.8kWh battery but i don't know for sure nor do i know the exact numbers.....an older 2016 A3 e-tron Audi Self study guide said the battery has a useable 7 kWh and the same guide said 50km/fill. Most EPA number i discovered online indicates a range of about 16miles (26km). But that seems low....the same self study guide said State of Charge SOC is maintained at between 25% to 85%. Thus, my math then says SOC is maintained at between 2.2-7.5 kWh. They way i look at that is; the car will only drain done to 2.2kWh leaving 6.6kWh as the top up amount one can add.

Charge time is for old/current battery. New one hasn't arrived yet! I was told it would come in mid-April.

The charger used was the newer Audi mobile charger that came with the Q4 e-trons. I believe the max is 32A? It definitely should be charging at peak 3.2kWh. I also charge in public on occasion for 30 minutes at a time, it would charge a bit more than halfway (from empty to on-board computer stating 30/25 minutes left to full) and the energy used would be around 1.5kWh.

Btw, the 16 miles (26km) EPA estimate is accurate for NA. I've read materials that state 50km range as well, 2 things about that: That was for the European market, which as we discussed has a larger usable capacity. Secondly, they are using the WLTP test cycle over there, which is always higher than EPA and less accurate compared to real-world driving. I haven't heard of anyone actually achieving 50km. The majority of the people are in the 30s km range with accessories off, and 20s or even sub 20km when you're using AC/heating.

One big takeaway for me from this whole battery warranty experience is that I spent too much time worrying about range. Don't get me wrong, I'm 100% glad I got a battery replacement, and I'm not saying it isn't worth pursuing if you are seeing a very low range and have some warranty left. But even if I didn't get a new battery, the car is still a joy to drive. They have me in a very nice 2024 A5 loaner, but honestly I miss my A3 e-tron.

If you are getting the high 5s to 6kWh charged into the car, the battery is very healthy and has degraded maybe 10%, incredibly good for a vehicle that is 7+ years old. Keep driving it and enjoy the car

 

[bbwagon]

Wouldn't that be 5.3 KWH? 2.2-7.5?

Bummer no one is upgrading these packs. The Prius folks have 10x upgrade options for gen 1-3

Economy of scale I guess.

I heard some talks about the newer (Not the 2025 but sometime around 2022..?) A3 e-tron with a 13 kWh battery pack being in similar size, and could potentially be swapped in. However, I sincerely doubt that'll ever be made available in NA, if it's plausible at all.

I don't know about US, but Canada only got 200 of these for each model year, making the total A3 e-trons driving around Canada to be under 600.

Even the US and Canada combined would be peanuts against sales numbers in Europe. We have so few aftermarket options here.

 

[rickbessex]

Charge time is for old/current battery. New one hasn't arrived yet! I was told it would come in mid-April.

The charger used was the newer Audi mobile charger that came with the Q4 e-trons. I believe the max is 32A? It definitely should be charging at peak 3.2kWh. I also charge in public on occasion for 30 minutes at a time, it would charge a bit more than halfway (from empty to on-board computer stating 30/25 minutes left to full) and the energy used would be around 1.5kWh.

Btw, the 16 miles (26km) EPA estimate is accurate for NA. I've read materials that state 50km range as well, 2 things about that: That was for the European market, which as we discussed has a larger usable capacity. Secondly, they are using the WLTP test cycle over there, which is always higher than EPA and less accurate compared to real-world driving. I haven't heard of anyone actually achieving 50km. The majority of the people are in the 30s km range with accessories off, and 20s or even sub 20km when you're using AC/heating.

One big takeaway for me from this whole battery warranty experience is that I spent too much time worrying about range. Don't get me wrong, I'm 100% glad I got a battery replacement, and I'm not saying it isn't worth pursuing if you are seeing a very low range and have some warranty left. But even if I didn't get a new battery, the car is still a joy to drive. They have me in a very nice 2024 A5 loaner, but honestly I miss my A3 e-tron.

If you are getting the high 5s to 6kWh charged into the car, the battery is very healthy and has degraded maybe 10%, incredibly good for a vehicle that is 7+ years old. Keep driving it and enjoy the car

I appreciate your reply!

I haven't tried to use the supplied Audi charger, on the face of that charger i see written 3.6kW. so i assume on 240V /16A it gets that draw. But a bit confused if the industrial socket max is 16A at 100% (or maybe its 32A at 100%) or perhaps its 8A at 50% as i haven't figured that out...im thinking 240V/16A at 100% and 240V/8A at 50%.

im doing 240V/12A with another branded charger in my garage getting 2:20H to full.

good advice to enjoy the drive....its running as intended and is a great car to own!