I'm feel a little reassured that it is a battery problem rather than something more sinister. As in my earlier update, BMW assist put a new one on free of charge under the warranty. However this happened before all the advice regarding the rubbish Exide. So unfortunately I've got another Exide.
thats good news Rabbitthanks. I have also spoken to N/N and they confirm they have a batch of batteries I beleive to be Oddeysey from the U S of A giving 3 times the cold crank over the standard. I have signed up to be a tester aparantly its just the terminal fitting they are not sure of (althogh state is intended for the F650GS/F800GS). was offered as you mentioned discounted rate = same as bmw standard cost.(ariving friday)
I will post here on the out come!

As you can see I had a new exide put on in March. May 14th the day I was due to set off on a European tour...battery was totally dead, not even the dash lit up. I had ridden 300 mile that week so it was being used. Got a green flag chappy over to test the battery, he also checked to see if anything was drawing power, but couldn't find any issues declared it knackered. Totally pissed off.
Made rush to get a replacement, could only get hold of a VARTA. Travelled Europe and it seems to be working fine. I'm now going to kick off with the dealership and try to get a new one for free.
Has anybody tried a SUPER B lithium battery in a F800GS. Very expensive but if it works fine.My standard one is very tired after only 6500 miles.
http://www.super-b.com/products/super-B-7800.html
Alan M

Has anybody tried a SUPER B lithium battery in a F800GS. Very expensive but if it works fine.My standard one is very tired after only 6500 miles.
http://www.super-b.com/products/super-B-7800.html
Alan M