I have a 1996 Mk1 MGF and I replaced the 8 year old Bosch battery in June 2023 with a VARTA Silver 075 battery, the car is not getting used very much due to ULEZ , its locked on my drive, The car still starts after three weeks of inactivity , I will top it up with the CTEK next week ready for a run. It is the alarm and clock that pulls the battery down, the cold weather does not help batteries.