Abstract: A method for preparing a battery assembly including: a) filling the battery assembly with a liquid electrolyte having one or more reactants therein; b) optionally, pickling the battery assembly; c) forming the battery assembly by applying an electric charge; d) draining the battery assembly of the liquid electrolyte with one or more fluids; e) drying the battery assembly of the one or more fluids; f) temporarily storing the battery assembly after draining and drying; and g) refilling the battery assembly with the liquid electrolyte after the temporarily storing.

Abstract: The present disclosure relates to a bipolar battery comprising one or more troughs formed therein and cooperating with one or more channels, the troughs adapted to guide flow of electrolyte to provide for faster and more uniform flow of the electrolyte. The disclosure relates to a bipolar battery assembly comprising: a) a plurality of electrode plates stacked together to form an electrode plate stack; b) one or more electrochemical cells, wherein each electrochemical cell is formed between a pair of electrode plates; c) one or more separators disposed within the one or more electrochemical cells; and d) one or more troughs formed in each of the one or more electrochemical cells and adapted to guide flow of electrolyte into the one or more electrochemical cells. The present disclosure further relates to a method for preparing a battery assembly. The method may utilize circulating one or more fluids through the battery assembly during preparation. Circulating fluids may be part of thermal control cycling.