3x AAA compact battery holder
thingiverse
This is a compact AAA battery holder for 3 cells. The end cap needs to be glued to the end of the holder, and battery contacts need to be made out of thin stainless sheet metal (I used the spring inside a Polaroid SX-70 film cartridge--works perfectly) and cut to size. Each negative end needs to be folded over to provide a small "spring" then glued into place correctly so the batteries are in series. This specifically is to help re-power Polaroid land cameras that require 4.5 volts to operate, since most other battery holders do not fit into the battery compartment.
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