Last night before trickle charge I did sand the battery posts and the cable terminal ends and the body where the ground strap attaches
Hi Bob I know what you are saying but the car is lowered and so getting underneath is tricky!
I am missing the factory jack
I will keep my trolley jack in car when I get home until solved
I will get new battery and if possible new battery terminals etc plus a set of jumper cables
I am still not convinced the battery is good even though it was load tested by 2 different people - auto centre and garage mechanic
Wish me luck!

Gonna need it!