Features:Maintenance Free – no need to add water, but periodic charging required when not in useAbsorbed Glass Mat (AGM) Separators – an advanced battery technology that eliminates the need to ever add waterAdvanced lead-calcium technology – holds its specific gravity more than 3 times longer than conventional lead antimony batteries1 Year warrantyMust be mounted in upright positionShipping Note: Ships via ground transportation in USA lower 48 states only, air shipping not available due to air regulations. We are not able to ship internationally or to Canada due to shipping regulations.