They are completely sealed and maintenance free, don't make any corrosion and are very resistant to vibration.
Absorbent Glass Mat (AGM) technology for efficient gas recombination of up to 99% and freedom from electrolyte maintenance or water adding.
Long service life, float or cyclic applications.
Maintenance-free operation.
Low self discharge.
Note brand printed on the side may differ from the photo but the photo but specs and capacity and physics size will still be the same as the cp12120 model.