Bs offers the BTX12 SLA battery factory activated: 

ALS range of BS-Battery is a new version of current batteries, designed to override type "conventional". ALS is a line of sealed batteries, activated plant and maintenance for easy use. SLA battery thus combines three major advantages: safety, ease and optimal long-term energy.
 
Ready to use and easy to install
 
Compatible with the type of chargers Optimate
 
No maintenance and more security
 
Power and duration of increased life
 
High resistance to vibration
 
Installation in any position
 
Low greenhouse gas
 
Voltage: 12 - Ah capacity 10 - 180 CCA
 
Dimensions: Length 150mm - Width 87mm - Height 130mm