
I would be fine with having to solder connectors ( ) onto the batteries themselves if need be. The only issue I have would be making a rechargeable battery pack that is removable and still powers the Gameboy just fine.

It could also be easy to make a pop-in rechargeable battery that could easily pop out and charge on their own separate charger outside of the Gameboy, but that make for more handling of the Gameboy and renders the DC port basically useless imo since I wouldn't ever have it plugged in that port while playing (and don't plan to, rather just let the batteries charge). Using this info, it would be easy to charge a hardwired battery from the DC port. Not sure how the existing DC port is set up, but if it is a pain to work with, it could always be swapped with something like this ( ) I'd imagine so that there can be wires soldered onto the posts via positive & negative wires inside the Gameboy to this adafruit board ( ) using this ( ). After investigating around and seeing some information about adafruit as well, I believe it would be possible to have some sort of battery pack that would sit inside the battery compartment and sit flush (since they would be AA shaped, like this ( ). While searching around, I did find this link ( ) where someone asked a similar question and they wanted to replace the batteries that go in with a lithium battery and someone referenced this image ( ) to show how they have modded other projects. This link shows a lithium battery that seems to have battery terminal connectors on the side, so it pops right in (after some slight modification to the battery bay, which I would like to avoid). I've looked around at a bunch of sites and links and am thinking that there HAS to be a way to do it, since apparently RetroModding did something similar for the GBA, which can be seen here: ( ). Is there a way you can buy the tops and bottoms of AA batteries and somehow solder that from the battery itself, so that they connect into the AA battery contacts and complete the circuit without being hardwired? Or even some way to 3D print a box to house a rechargeable pack in that connects to the battery terminals? However, I am trying to think of a way to have some sort of li-ion/li-poly battery that can be swapped easily. I've seen people replace the port in that spot with micro USB and just charge it that way, however I would imagine its more work to do that instead of just removing whatever connection (whether its a wire or soldered connection) the existing DC port has and connecting that straight to the battery.

I've been scouring YouTube, Reddit, and some other forum sites to see what people have done to create rechargeable batteries for their Gameboy and that part seems easy, however I am curious about two things. This is a little longer of a post, but it does have some helpful info I've found altogether and things others may not have so I am making this in the hopes of helping others and also finding a solutions that keeps the original look of the Gameboy shell. Just curious if a removable one that easily pops in and out without soldering is possible that also charges through DC port.

Also shows how it can be charged through DC port possibly. TLDR: Lots of info on Rechargeable batteries for DMG Gameboys.
