Hi, I believe a faulty battery must be returned full charged so they can test it. EDIT. "A battery showing a resting voltage of less than 10.5v will have become discharged through one of the above points, this is not a manufacturing fault."
Just relaying what I have read. Somewhere. See #7 below
Cheers,
Iain.
PS. From Tayna Website:
What Voids the Warranty:
1 - Abuse, misuse, improper installation, improper maintenance and modifications including removal of the battery lid.
2 - Incorrect application.
3 - Physical damage, including broken or melted terminals.
4 - Gen