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 Post subject: KW used per charge
PostPosted: Sat Apr 08, 2017 5:04 am 
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Joined: Sat Mar 18, 2017 6:37 am
Posts: 6
I have a meter set up that records how much KW is used. For the past week it shows just over 8KW used in a 24 hour period. This is one full charge as the commute is 24 miles and time in standby mode. The standby mode used around 0.03 kw. This seems high (not the standby amount).


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 Post subject: Re: KW used per charge
PostPosted: Wed Apr 12, 2017 8:26 am 
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Joined: Thu Aug 04, 2016 1:06 pm
Posts: 196
Sounds about right to me. I thought the battery was rated at 8Kw, though it doesn't fully discharge. Seems like you get 6.6kW before it's "empty".


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 Post subject: Re: KW used per charge
PostPosted: Fri Apr 14, 2017 5:01 am 
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Joined: Sat Mar 18, 2017 6:37 am
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If I do the math 6.6 vs 8.2 KW, The 8.2 is 25% more. That looks like a lot to me.
cm


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 Post subject: Re: KW used per charge
PostPosted: Thu Apr 20, 2017 9:57 am 
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Joined: Tue Jan 31, 2017 10:48 am
Posts: 44
There is an inverter inside the e-tron that takes household AC and charges the batteries. Inverters and chargers are not perfectly efficient devices so there will always be a loss between your meter and the EV batteries.

Do you use 110v or 220v charging at home? That will also affect your efficiency. 220v will be more efficient.


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 Post subject: Re: KW used per charge
PostPosted: Sat Apr 22, 2017 5:01 am 
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Joined: Sat Mar 18, 2017 6:37 am
Posts: 6
Thanks for the update. We are using 110V for now. We have not found the need for a fast charge yet.


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