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Power 4 camera flashes with a battery 12vdc to 6vdc conversion Answered

I would like to provide power to four camera flashes with a deep cycle battery. The flashes run off of 4 AA batteries (6VDC). Can I wire two flashes in series (6 volts each) and tie them directly into the battery? Or would I need to use a power transformer to step down the 12VDC to 6VDC, then have all four flashes running parallel to the battery? It appears that each flash needs about 3 amps to charge their capacitors. The battery I am using is 12VDC and 12 amps. Thanks