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Redox flow batteries are one of the prominent electrochemical energy storage devices with large-scale storage and high energy density.¹ The highly reversible Zn/Zn²⁺ (-0.76 V vs. RHE) and Br^-/Br₂ (1.08 V vs. RHE) redox couple have been employed in Zn-Br₂ flow batteries (1.84 V vs. RHE). However, the dendritic growth of Zn electrodeposits during the repetitive discharge process triggers an internal short-circuit between the anode and the cathode.¹ Besides this, cross-diffusion of the highly soluble Br^- (Br₃ ^-) ion causes a severe self-discharge of the system and reduced cycle life.² Additives and ion-selective membranes have been employed to mitigate these challenges for improved cycle life and coulombic efficiency in Zn-Br₂ batteries.³ Here, we fabricate an aqueous Zn-Br₂ static battery with internally contained and moderate magnetic fields, (~ 30, 40, 50 and 60 mT) at the anode and cathode by …