"Elevate the power and reliability of your vehicle with the Yuasa YTX20L-BS Battery. This maintenance-free PWC battery is designed to deliver consistent performance without the need to add water. With Absorbed Glass Mat (AGM) separators, it utilizes advanced battery technology that eliminates the hassle of water maintenance. The battery's advanced lead-calcium technology ensures a longer specific gravity, making it more durable than conventional batteries. Special Separator Provides virtually maintenance free operation and makes the battery spill-proof. AGM technology eliminates water loss. Grid Design Withstands severe vibration, assures maximum conductivity. Active Material Compounded to withstand vibration, prolong battery life and dependability. Thru-Partition Construction Provides shorter current path with less resistance than ""over the partition"" construction – you get more cranking power when you need it. Safety Valve / Flame Arrestor Relieves excess pressure. Patented Sealed Post Prevents acid seepage, reduces corrosion – extends battery life. Heat Sealed Case to Cover Protects against seepage and corrosion – bonded unit gives extra strength. Polypropylene Cover and Container Assures reserve electrolyte capacity for cooler operating temperatures: gives greater resistance to gas and oil – and impact in extreme weather conditions."