Cookson
Registered user
I suspect the battery on my GSA is on it's last legs, so will need replacing sometime soon.
Which battery should I replace it with, a genuine BMW, a Hawker (as sold by TT) or are there better ones.
Also what can I expect it to cost.

Which battery should I replace it with, a genuine BMW, a Hawker (as sold by TT) or are there better ones.
Also what can I expect it to cost.