Hawker® Water Less® ATEX batteries are specific vented motive power batteries , using a battery container designed, patented and certified for use in Zone 1-2 (Gas) and 21-22 (Dust) areas where flammable gas or dust may occur. These batteries are designed to power electrical materials handling equipment working in potentially explosive environments. Due to specific technical requirements for explosive area, Water Less ATEX batteries are not equipped with the level probe.