Energy needs to maintain battery temp while charging

Audi A3 E-tron Forum

Help Support Audi A3 E-tron Forum:

This site may earn a commission from merchant affiliate links, including eBay, Amazon, and others.


Jan 25, 2016
(I couldn't find this elsewhere posted...)

My understanding for all EVs is the batteries need to be held at a comfortable temperature. Not sure the range but I imagine freezing is not welcome.

Does Audi publish:
- What kind of active temperature control is done during charging?
- What temperature range is targeted?
- What kind of energy draw this may cause, say when the battery is fully charged?
Nothing official, but it has been reported that (at least in some countries) the A3 e-tron:

- Will not allow EV mode under -10 celsius
- Will not even start if not plugged under -38 celsius

Also, from the canadian manual, p.99:

My comprehension: The battery is rated to be in car parked between -25 and +48 celsius. (-13F/118F). It should warm up if the vehicule is used. I would guess it will not cool down on itself...
I've had my etron around 1 month now,and noticed a difference in range during nominal temperature changes.

Temperature: 60F /16C - 82F/28C ,the range post a full charge can differ much as 5 miles/ 8km. It's a lot for a "25 mile/40km" PHEV. My best post charge range to date: 28miles/46km at 20C/ 68F . Voltage of the charge doesn't seem to matter because I think the best range came from a 240V. Whereas other 240V haven't resulted in nearly the same range,usually about 5 miles/8km less at temperatures around 7C / 44F higher than the temperature that resulted in the best range: 68F/20C.

This makes no sense to me as the 7C/44F temperature difference is not "extreme"when you compare the best, and lesser range achieved.