The invention relates to a device for fixing a battery, consisting of a support tray comprising an essentially-flat support face and two longitudinal flanges. A first set of flooring panels having a first shape and recessed grooves on the opposite lateral sides. Certain filter elements may be useful for sequestering acids or neutralized acids in certain oils or fuels, for example, the acids originating in the combustion and lubrication system of an internal combustion engine or those contained in oils in an oil circulation system. They are reversible inhibitors of the blood clotting enzymes factor Xa andor factor VIIa, and can in general be applied in conditions in which an undesired activity of factor Xa andor factor VIIa is present or for the cure or prevention of which an inhibition of factor Xa andor factor VIIa is intended. The charged particle beam writing apparatus further including an assignment unit to assign each pattern data of each figure pattern to be arranged in each of the plural small regions concerned, and a writing unit to write, for each of plural groups, each figure pattern in each of the plural small regions concerned by using a charged particle beam.