Battery Stackers
thingiverse
Modified the original to convert into staggered battery storage for AA, AAA, and 9V batteries and made a few other tweaks. The photos aren't the final design; they're just there to show off the staggered stack. I'd suggest not dropping the batteries from the very top - the front slot is there so you can lower them down. It probably doesn't matter, but better safe than sorry. *Update: Added 18650 Battery Stacker.*
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