Bosch silver battery

well after fitting one of these 18months ago ive just been informed its faulty. Good news is they will replace it for free :) but I want to make sure they have fitted the correct one in the first place as I remember the first one they got was too long.

so doea anyone have the Bosch silver part number for the S3 ??? ie the number on the battery ~?????
Can't help with the part number, but I had a Bosch silver replaced under warranty after 2.5 years as it wouldn't hold enough charge. GSF just swapped it like for like.
I was worrying something else was up as I hardly run the car nowadays 3-4k a year max. Just been anoying when ive not run it for 2 weeks and its that flat the indicators hardly flash :(