NOVELTY - An apparatus for providing flowable mixture (14) useful in lead-acid battery, comprises a vessel (12) external to the battery, to receive and transfer the flowable mixture to battery; battery replenishment water reservoir (26) to supply battery replenishment water (32) to vessel; and containers (28, 30) holding a battery condition evaluating composition (34) and a battery life extending composition (36). The apparatus includes manifold (58) with valves, to supply an amount of the replenishment water and at least one of the compositions in combined form as flowable mixture, to the vessel.    USE - For providing a flowable mixture useful in a lead-acid battery (claimed) e.g. deep cycling batteries useful in electric vehicle propulsion.    ADVANTAGE - The apparatus exhibits a versatile mixing/dosing arrangement, such that the respective volumes of the battery replenishment water, the battery life extending composition and the battery condition evaluating composition, that form the total volume of flowable mixture, are variable.    DETAILED DESCRIPTION - An apparatus for providing a flowable mixture (14) useful in a lead-acid battery, comprises a vessel (12) or conduit, external to the battery; a battery replenishment water source/reservoir (26); and at least two containers (28, 30) for holding a battery condition evaluating composition (34) and a battery life extending composition (36) respectively. The vessel receives the flowable mixture and transfers the flowable mixture to the lead-acid battery. The battery replenishment water reservoir is in fluid communication with the vessel, to supply battery replenishment water (32) to the vessel. The containers are in fluid communication with the vessel, to supply at least one of the composition to the vessel. The apparatus includes a manifold (58) with flow control valves, for supplying an amount of the battery replenishment water and at least one of the compositions in a combined form as the flowable mixture, to the vessel. The flow control valves include a replenishment water flow valve (52), a battery condition evaluating composition flow control valve (54) and a battery life extending composition flow control valve (56), for adjusting a desired volumetric ratio of each of the supplied fluid. The vessel preferably has an outlet, a control valve, an outlet tube and an opening (16), arranged to facilitate a flow of the flowable mixture out from the vessel. The battery condition evaluating composition is preferably an acid-base indicator having a defined indicator state in full strength battery acid. An INDEPENDENT CLAIM is included for a method of providing a flowable mixture useful in a lead acid battery, involving providing replenishment water and at least one of the battery condition evaluating composition and the battery life extending composition; mixing predetermined amounts of the water and at least one of the compositions to produce the flowable mixture; providing a vessel external to a battery, to receive the flowable mixture; delivering the flowable mixture in the vessel; and dosing/providing the flowable mixture from vessel into the lead-acid battery.    DESCRIPTION OF DRAWING(S) - The figure shows a schematic representation of a mixing or dosing arrangement for combining water with at least one dosing composition.    vessel (12)    flowable mixture (14)    vessel opening (16)    closure cap for vessel (20)    battery replenishment water reservoir (26)    containers for holding compositions (28, 30)    battery replenishment water (32)    battery condition evaluating composition (34)    battery life extending composition (36)    volume indicators (38, 40, 42)    replenishment water flow control valve (52)    battery condition evaluating composition flow control valve (54)    battery life extending composition flow control valve (56)    manifold (58)    stream of flowable mixture (60)    fluid levels. (62, 64, 66, 68)