My D4 2.7 has the Varta 90Ah battery installed. We had a 4 day camping trip where the car was opened many times each day and night but I just made sure the interior lights were set to off. I was a little worried given that there had been reports of flat batteries and I know my Prado loving mates we were with would have mocked me if she did go flat but she started fine each day with no problems.
Have to add a picture. I just love looking at the D4
http://img215.imageshack.us/img215/3...0404165336.jpg
I also did the test of leaving the keys in the car for 3 days when I got home and again she started fine.
Wasn't one of the early firmware updates fix the battery problems?

