Watertight Battery Flatpack

  The Watertight Battery Flatpack is my third iteration of watertight battery storage designed around keeping the batteries you need in your range bag, camping kit or hunting gear in a watertight shadowboxed organizer.  The first two designs were pucks, sealed using commonly available o-rings.  This one capitalizes on form factor, measuring 5" across, 6.7" long and just over an inch in thickness.  It utilizes a TPU gasket to keep the water out, unlike the previous o-ring models, and fits far better into cargo pockets, backpack compartments or interior compartments in a range bag.  

  This model carries the following batteries:

• 1 9v
• 2 CR123A
• 4 AA
• 6 AAA
• 2 CR2032
• 2 CR1632

  I've included a picture of how to assemble.  This design prints with no supports needed, no AMS needed.  I would print in PETG since you can expect something like this to sit in a car or a pack for awhile on hot days and PLA won't handle that while PETG will.  

  Comments, critique and requests welcome!

  For the guys who a TPU gasket isn't an option currently, the o-ring design is here: https://makerworld.com/en/models/1489139-battery-puck-2-0#profileId-1556232

6/21/25 UPDATE:  Two things.  

1. Added a nameplate.  There is an option to print the case without the nameplate, or with one, plus an example nameplate and a blank one.  Either can be added with the standard Bambu Studio text editor.
2. Made the side latches a bit easier to work.  Eased them up so they don't need nearly the break-in period they were needing prior.

  Thanks for all the support, the comments and the downloads.  Let me know what else you could see being useful with this design.

6/26/25 UPDATE: Uploaded a blank tray STEP file by request.  The slots in the top are still cut into it, and you'll need a way to access them from underneath, so factor that into your extrusions, or you won't be able to attach it to the cap.

2/27/26 UPDATE: A new, modular, Flatpack design is out here.  Build out your pack specific to your battery needs.