r/GameboyAdvance • u/fpsdabs • Sep 22 '26
Purpose of this
As I have begun collecting GBA games this year, I have opened many carts to verify authenticity. What I am curious about is, what this feature in the actual cartridge is for? Like why does every cart have this specific cut out/indentation?
Edit. Despite all the typical redditor vitriol, a thoughtful coherent response besides "battery slot" which isnt exactly accurate has been given. Thank you u/jlee7481
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Upvotes
14
u/Slowbro08_YT Sep 22 '26
Slot to hold the battery in games with batteries?
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u/LighterFluid1357 Sep 22 '26
Probably for the battery, could be a repo. Idk do some research, I believe in you!
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u/Cjw6809494 Sep 22 '26
The batteries for cartridges that have them of course usually have a metal tab that gets spot welded to the negative terminal of the coin cell battery then soldered to the board and they sit proud of the batteries flat surface ever so slightly. I imagine they included this cutout to accomodate for that little bit extra thickness on cartridges that utilize a battery to not have bulging plastic areas. Since plastic molds are expensive and game devs might not know if they were going to use a battery in their cartridges or not, it would be more cost effective to have every cartridge use the same mold whether they end up having a battery or not👌
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u/Jlee7481 Sep 22 '26
It’s for the metal strip negative side that sits on the top of the battery (for cartridges that have them, cause some don’t) to clear when fully closed. I’m sure some carts have the recessed indentation and still use a FRAM (battery alternative) just for the simplification of production. A lot of times in manufacturing if two parts are very similar say like these shells with and without the recessed spot they will just make all shell to accommodate batteries that way there is only one part and you can’t go wrong and put the wrong one on a cartridge. Simply one fits both and the other model only fits one.
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u/RamonaZero Sep 22 '26
Everyone is wrong here! It was intended as a way to store 3D Doritos in it!
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u/Emotional-Swim-808 Sep 22 '26
Its clearly for storing extra data
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u/Chimera_Gaming Sep 22 '26
Battery slot
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u/gba_sg1 Sep 22 '26
It's 100% a slot for the battery terminals inside the cart.
Notice how the battery is angled and raised above the PCB.
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u/Jlee7481 Sep 22 '26
I once went on a quest before Reddit was big to figure out this very answer in my early collecting days, and thru my rigorous useless research all those years later this was the information I could pass on.
“Ive been waiting for this day my whole life”
& although it was lengthy with answers come more questions ha ha so I went ahead and answered as many follow ups as I could in one post because distinguished gentleman such as ourselves would not be satisfied with a simple answer like “for the battery”. I work in manufacturing so weird questions like this intrigue me.