This is why I really enjoy this forum. Intelligent people giving solid feedback. I'm going to move the mini under the shade and then throw the cover on that should be the best of both worldsthanks for the video...i have a few audis that i don't use everyday but i do a healthy run once a week for 45min each with no traffic on the freeway/expressway. since you're in lockdown i'd rather put the r8 on a battery tender the whole time without even running it than starting it stationary for 5min only. when i do my runs i don't shut down the engine so the battery gets charged fully and i also run the a/c so the freon doesn't leak out from not being used. the r8 is the only audi that's on a battery tender at all times because i noticed that starting this car requires a lot of juice so the battery needs to be fully charged at all times. 2 things that i would disagree with you on the video is starting the r8 or any car for just a few minutes (like 5min) and shutting it down. 5min maybe a lot but not sufficient enough to charge the battery fully and it's not good for the engine as well for that little of a time to be running. 5min to me is just warming up my cars from a cold start without even moving them during warm ups. the next would be the car cover...my experience it is safer to leave the car outside under the sun without a car cover. why? because if you have a car cover on your car under the sun all that heat will be concentrated inside the interior and paint which can lead to paint damage and cracked leather seats and dash. this actually happened to one of my cars when i made an experiment...2 months under the sun with a car cover...paint got damaged and seats/dash cracked. so in my humble opinion i would have to disagree on those 2 things otherwise excellent video.
Thank you so much for the solid feedback. I don't have a battery tender and I can't buy one right now because the shops are closed. What should I doI agree with the comment above regarding NOT starting the car for only a few minutes at a time and letting it idle. As someone who needs to put the R8 away each winter, I simply prepare it for storage and hook it up to the trickle charger. I leave it that way for the winter and start it come the spring. Starting the car for short periods of time won't allow it to come to operating temperature, which is bad for the engine.
When starting it (even in the summer while it's being actively used, but certainly after storage), I turn the key to the aux position and let it sit there for 5 - 10 seconds. This lets the oil pumps work and gives the car time to get voltage up (you can watch it happen on the voltmeter) before trying to turn it over. Again, I do this regularly - just the way I start the car and it's happier for it.
How old is the battery? When my battery was new, I left it the first winter without a battery maintainer - the car was fine. Started up after several months without starting. The car will shut down non-essential circuits the longer it sits. So, a newer/fresh battery may actually be fine for a few months. If the battery is older, a maintainer then becomes much more important if it's going to sit for weeks, no less months.Thank you so much for the solid feedback. I don't have a battery tender and I can't buy one right now because the shops are closed. What should I do