UPDATED: The RIGHT Way to Replace Gameboy Cart Batteries

Since it has been almost 2 years, I figured it's time that I address some things in my original Gameboy cart save battery replacement tutorial. I've studied, learned, and practiced quite a bit since then, and my soldering skills now are worlds apart from how they used to be. That said, in this video I show you the PROPER and CORRECT way to solder and replace game cartridge save batteries. Enjoy!
(NOTE: This is a fixed re-upload. Sorry for all of the video release confusion!)
Watch my original tutorial:
• The RIGHT Way to Repla...
Follow me on Instagram:
/ kyleawsm
MUSIC:
Song: Ikson - Skyline (Vlog No Copyright Music)
Music promoted by Vlog No Copyright Music.
Video Link: • Ikson - Skyline (Vlog ...

[@agibby5]

Mad respect for someone who publicly and openly admits they made mistakes. Shows humility goes a long way. And good job on the new video. Good techniques too! Some people take this information for granted, but it takes a while to learn and implement these concepts and everyone is different.

[@tedcruz1774]

Shame we can say the same about Biden :(

[@leeartlee915]

I know right? I almost died of shock.

[@leeartlee915]

@@tedcruz1774 What in the name of sweet Jesus are you doing bringing politics into a video game battery replacement tutorial? That is the saddest thing I’ve seen in a looooooong time. Go find someone to give you a hug. You obviously need it.

[@tedcruz1774]

@@leeartlee915 Are you offering a hug? I'm available on Tuesday from 3-6pm. I can schedule you in?

[@leeartlee915]

@@tedcruz1774 If you really don’t know anyone else and you live nearby, I’d be happy to give you a hug. Though, without passing judgment, I am concerned that you don’t know a single person who could do that for you… but it would explain a lot.

[@TRJ2241987]

I started a new job this year that uses all of these supplies and have gotten skilled in soldering, so now I can start bringing Nintendo games in when I need a battery swap 😄

[@thebigboss7268]

Thanks for the updated tutorial :)

[@superboy3229]

This motherboard has gold links on the game. what is it name?

[@JungleOfMeat]

Hmm...do it with tape or fuck around with a soldering iron which no one wants to do

[@robertdrew875]

I appreciate a more laymans view of this. I haven't used a soldering kit for quite a few years and getting a "good vs bad" practices view of it was more helpful than I would have expected. Thank you for your time in making this!

[@makho]

Nicely done, looks great! Thank you for addressing the issues with the previous video(s). It takes a lot to own up to a mistake and it really reflects on one's character when they do so.

[@damienyuhas3257]

I was wondering why i hadn't seen this video last week when i looked up the process then i saw this was uploaded only 6 hours ago. Great redo, you fixed everything i wasn't too sure i would want to agree with.

[@emmettturner9452]

If your iron isn’t hot enough to melt the solder then it isn’t hot enough to start the 3-second countdown. :) Also, that guideline doesn’t really apply to high thermal masses like battery tabs on power and heavy/thick ground planes. That said, your iron was hot enough in that first video, it just didn’t have a digital temperature control so it couldn’t recover its temperature very fast. You can overcome this limitation with technique. You needed to dwell longer without moving so much. Moving the way you were makes it appear like you are spreading the heat around but the real reason it looks like that is because the old solder doesn’t bead when heated until you add fresh solder/flux. While a bit of a swirl can help get heat transfer going, moving with strokes interrupts the heat transfer and generally makes it take longer. My tips: Always use leaded solder with rosin flux for these because Game Boy games were never lead-free. There is no good reason to mix solder chemistries and raise the melting temperature. Tin your tip with excess solder and wait for the temperature to recover before melting existing solder. This has more to do with thermal mass than adding fresh solder, since the flux core will have already spent before you touch the old solder. Having the bulk of the solder already molten and at temperature allows it to instantly merge with the old solder for maximum heat transfer immediately. Even if it re-freezes due to tip heat sinking into the ground plane/battery tab, the heat from your iron will saturate and liquify again much sooner than if you started with a dry tip. You can add fresh solder to get the heat transfer going, but save some until just before removing heat. Leave it wet. This is how you avoid spending the flux too early and having dull joints with wisps and pointy bits. Just a tiny kiss of fresh flux core solder as you remove the iron is all it takes. There’s little reason to waste braid flattening both sides. If you want to make sure the battery is perfectly flat, remove all the solder from one side and then solder the other side first. The molten solder won’t hold it up off the PCB and the other side won’t either since it’s the one you flattened removing solder.

[@SimpleComplicity]

Damn, people of the internet aren't usually kind when they see a hack job of something so I respect you for taking them in stride and learning to be better.

[@troyragnor919]

thanks to your tutorial I was just able to replace my silver battery, which has been in my possession ever since it was released, and could restore my nostalgia. thank you

[@ssvishnov]

I replaced the battery on my GBA SP eagerly looking to play my silver version again, only to find the save file was gone and my only options now are "New Game" and "Options". I'm sad that all that data is gone

[@aaronphilips2780]

@@ssvishnov that’s really unfortunate… such a letdown when you don’t see that “Continue” option. I would highly recommend a gameboy mega memory card. You can use it to backup and restore GB & GBC game data. That way, you can backup your precious save files and when a game’s battery dies, you can restore the data after replacing the battery. This has helped me avoid losing save data multiple times.

[@eli77721]

This is awesome 👍, I wished I knew when I was younger. But then again little kids shouldn't be playing with soldering iron.

[@Cherokie89]

I've been tinkering, building, fixing, and wiring for over a decade and have never seen desoldering braid. Glad I watched this. I'll be adding that to the toolkit. Looks easier and less finicky than a suction desolderer.

[@KyleAwsm]

Glad to help! Yup, it certainly has its uses! I've got a Hakko FR-301, but I still often find myself using braid instead for some things. Cheers! 🙂👍🏻

[@OneWithoutSin]

@@KyleAwsmwhat kind of desoldering braid do you use do you have a link to one you would recommend there’s so many

[@bradybourgeois9819]

Late comment but very happy with this video. Showing the mistakes you made helps me not make those mistakes because I am new. Some things more experienced people take for granted because they do not think about them anymore, and seeing you explain why some of the things you did in your previous video were bad helped me learn a ton. Thanks!

[@CarsonsVids]

Much better techniques used in this video compared to your old one!

[@KyleAwsm]

Thank you! 🙂 Glad to see you came over from the other one. 👍🏻 Cheers!

[@leonardpayne8795]

No more dead batteries on game boy games.

[@HiddenleafHashira]

Do you possibly have a link to the battery tester & the proper soldering iron with temp control? I wanna find the right one, but I also don't wanna break the bank. Would a budget of around 250/300 bucks be okay?

[@jimbomctimbo1610]

Nice job on the soldering this time around. I solder guitar electronics and it would surprise people how even people who have been working on stuff like this for years still aren't good at it. Well done!

[@ATSaale]

lol, just commented what to do on the old one before I notice this one. Great job. As you said, a smaller tip needs higher temps, so for larger things like battery tabs a chisel tip works better since you can get more heat to a larger area without the high temps that can scorch pcbs and lift traces. Unless I'm soldering small components next to each other I almost always go with a chisel tip, it just seems to get the heat into the components quicker, which usually helps not overheat things.

[@hezaroseli]

Thank you for the video! I'm looking into replacing my batteries in my games, and this is wonderful. :D

[@pleasemane]

I’m debating about doing this myself or have my game store do it for me for 25 bucks? Is that a better deal or just I just DYI.

[@brutalhonesty07]

Your effort is noticed in your videos. I just discovered your channel and hope the level of videography, and narration (audio quality too) is maintained for DIY content. I wish your channel well!

[@KyleAwsm]

Thank you so very much! 😊

[@brutalhonesty07]

KyleAwsm You gained a sub, for the quick reply. I hope to see more video game content, 3rd party accessories for saving retro games, and top 10 lists for such topics once you aggregate long product review buildup. Thanks.

[@tokaiju]

great work, you don't need to use so much flux though, especially that thick stuff you just need a tiny dot

[@VideoGameJNPoop]

Looks like I’ve got great news for you all here: I’ve found a video on KZbin where instead of replacing a battery on the Game Boy or Game Boy Color cartridge, the user replaces the SRAM chip with an FRAM chip, that way it will save without a battery. The video is in German though unfortunately, but it does show and prove that FRAM saves are possible on original Game Boy and Game Boy Color cartridges. Though I believe the user does an additional step where he adds something else (I don’t know what it is but) with the FRAM chip. I don’t know if the chip has to be a specific one though and the video only tests it on Pokémon Red & Blue (German Versions), so I can’t confirm if every game (with saves) can do this too.

[@af5287]

I'm having trouble where I can melt the rosin core solder by itself but I cant make a dent in the solder on the circuit board. Every time I try to make a bridge between the melted solder and the solder on the board, it just cures on the board, making the mound of solder on the board bigger. I am using lead free solder, does anyone have any tips that could help fix this? I am getting flux tomorrow, should that help?

[@Harkren]

Is the additional flux necessary if you're using a solder wire that has 2% flux in the core? I was asking an electrician friend of mine and they said the flux used to be separate in older times but most of the time nowadays it is part of the wire?

[@KyleAwsm]

From experience, additional flux never hurts, and it promotes the formation of really nice welds/solder joints and "fillets". It also helps with heat conduction and can prevent cold joints. So I would highly recommend using additional flux. Just know that, for some reason, my advice here is considered highly controversial by some; Go figure. Thanks for watching!

[@KyleAwsm]

Also, yes: "Flux core" means that your solder has microscopic pores/channels with flux store internally, which comes out as the solder is melted. For some applications it's sufficient. But if you want to really rise above the rest, just take my word for it and use additional rosin core flux as well. You won't be sorry.

[@samusranzer]

I don't have much experience with a soldering iron, aside that I installed pickups in one of my guitars and I fixed a guitar effect pedal. How could I learn more about using a soldering iron? I'm afraid of damaging an original gbc game and a (I think replica) gba cartridge. I've got the tools and I've got the batteries, I just don't have much experience with soldering iron.

[@MarianMetanoia]

I'm in the same boat.

[@senecafallsjb]

Something I want to add here. When I went to boot up my copy of Oracle of Seasons, the save files were all corrupted. I wasn’t able to load any of the profiles. I suspect the game was hacked at one point with a game genie. To fix this, I ran my soldering iron over the contacts of the SRAM chip, and it booted up fine! So, if anyone has similar issues, start there.

[@KyleAwsm]

Actually, it sounds like you had aged (and some cracked) solder joints on the SRAM pins, which can cause corrupted (or wiped) memory and can be fixed by reflowing this way - Good job! 🙂👍🏻

[@lgeiger]

Thank you for this video and listing those possible mistakes. I would 100% have made some of those if I didn't watch this video. I am going to replace some batteries this weekend. I hope the soldering iron I ordered will work. It wasn't very expensive. I haven't soldered a lot myself, but I know how it should look like at least. That soldering on that Zelda game looked great.

[@mannimaulwurf9496]

Now THATS some great soldering!

[@Pinsonneaultmotorsports]

Fun fact even if you replace the battery on a GBA Pokémon game it won’t go back to the way it was before. Almost all of the events won’t Work. growing berries seeing mirage island the berrie master won’t work anymore because the original game battery has a RTC. The only events I’m aware of working are timed evolutions for certain Pokémon. Ruby emerald sapphire. These are the games effected by it. Fire red leaf green are not

[@silver5liter]

Sometimes you have to pull the cart out and put it back in. Ive had a DMG hold a save on a zelda cart before for a while with a dry battery. Once you pull it out and put it back in, the save is gone.

[@KYBlueJedi]

1:57 I suggest adding another step before soldering. Backup GB cart data first. The Retrode2 + GB plugin works well in this instance. That way you do not have to worry about losing saved data.

[@wojtekpolska1013]

the whole reason you would replace a battery is to make it save data you cant backup save data, if there is no save data (it gets deleted after turning off the console due to lack of power) so what you are saying is simply impossible

[@larrychilders6599]

Or do the following unscrew the cartridge's game bit. Take the front off. Put the cartridge without the front on it into a Gameboy Advance. Turn on the GBA ( you can use GBC but it will be trickier) then do the steps shown in this video to replace the save battery. Then save the game and put the face back on

[@aaronphilips2780]

Great video, thank you! Do you by chance have a specific brand of CR1616 battery that you would recommend for a Pokémon Yellow replacement? They seem readily available, but I want to try and match the OEM battery as best as possible. Thanks again!

[@dan.bergman]

Hi, Great video! But I noticed a possible issue that I don't see anyone mentioned. The new battery is "reversed" from the original, meaning when you install it, you must bring the negative pin from the outside ring of the board flush into contact with the positive center of the board. All it takes is a scratch in the green solder mask beneath the battery to make a complete short circuit! Any thoughts on the risk of this? Thanks

[@rare_huntertenebrae1589]

Repaired my old pokemon crystal with this video. My first time using a soldering kit but it works! Hopefully I did everything right.

[@user-rs1990]

Ideally, you should practice on something of low value. For example, a cartridge with a torn or missing label.

[@AviciisGhost]

The little circular plastic peice popped out which way does it go back on and I’m scared to over tightening it

[@blurry9744]

Ive got my old pokemon blue game which I tried opening up, I removed the screw on the back with ease, but separating the two halves of the plastic cover seemed to be difficult somehow, and I didnt wanna put too much force on it, is there a possibilty that its glued together? I bought the game like 20 years ago, and Im 99% sure its not a fake copy. Do you guys have troubles separating your plastic covers in other gameboy games? Im not sure what to do in my case

[@shezgill]

I have a pokemon red game that has never had the ability to save since my brother bought it when we were kids. I want to attempt to fix it, and this really helped me understand the steps to do so. I've also never used a soldering iron before, so wish me luck!

[@girthquake2390]

I have never soldered before so please humor me a moment here as I have a couple of questions. 1. What does flux actually do? 2. When the flux melts doesn't it run the risk of damaging the game board? As it seems to spread quite far when melting.

[@CosmotecXD]

is there a certain type of soldering flux you would recommend to use for this? I'm going to replace the battery in a wario land cartridge i got and have never done something like this before.

[@hoagtech]

Holy Solder globs Man! Your risking pad burning by demonstration this way. Also your children's disclaimer was super unnecessary and makes you look like a teachers pet. Just post the video abiding by the rules and stop waiving your youtube laws in our face

[@ShinjuNLG]

replaced the battery of my pokemon silver 2 times already. it just drains them in 1 week. could it be faulty batteries or could there be something wrong with my cardridge? the batteries do give the voltage that they should when i solder them on.

[@Naturenerd1000]

Glad cartridges don't have battery save states today. Yikes. 🤯 How many people lost all their rare Pokémon?!

[@leeartlee915]

So…. can someone explain what flux actually is? I know what it’s used for but I don’t get what it actually is.

[@cosmicfish1000]

Can any one point me to where I can get good quality batteries for the Gameboy cartridges please? There's so many out there I can't tell which ones are good and which are crap. Thanks

[@fernandolomas6635]

If you do this on a pokemon game will all your data be lost? Because on the previous video when you turned it on the game was at the very beginning. I really hope not because I've beaten both Lance and Red in Pokemon Gold.

[@GrimReaper86107]

Can I just use flux to clean off the old solder instead of using 40/60 tin lead rosin core solder?

[@alexev91]

Jesus Christ I didn’t know I had to do major surgery just to change a battery smh I don’t even have any of those tools. Makes me not wanna buy any old gameboy games with battery bs

[@Ivy_Writer]

Thank you for this! I just replaced my battery in my copy of Pokemon Red.

[@Spawnholio]

Great video. I'm wanting to replace the batteries in 2 GBA Carts and was wondering if it's pretty much the same method?

[@KyleAwsm]

Yup, video on exactly this coming next Friday! 😉 Thanks for watching!

[@Spawnholio]

@@KyleAwsm looking forward to it 👍

[@dittery]

ima just use tape, i would do this method if I had a solder and all the appropriate tools but I dont wanna spend all that money just for a gameboy cartridge

[@Victor-xs7gf]

lmao "or ill smack you." xD cool vid. will have to try it on my copies of PKMN Gold and Silver

[@ssvishnov]

Doing this only allows the game to be played right? Changing the battery won't restore the previous save file that existed?

[@RRios0027]

Im gonna use my GFs copy because NO WAY IN HELL will i do this on my own

[@Marios_Rp]

Greetings from Greece! How many mm is your solder and your disoldering braid?? Thanks in advance

[@IcePhoenixOfTime]

Heya there are battery holders for such batterys so is it possible to replace it with that since you dont need to solder the pkmn games ever again ...

[@rhys406]

Great video, I just watched the previous one and found this one after. Definetly alot higher quality work and some good tips too, thank you.

[@dashcamcalifornia5003]

much better technique but the original was still way less cringey than any others i've found.

[@brettbarnickel2985]

Great followup and love your work my friend! Awesome to see somebody in the community addressing the importance of safe practices

[@Steezybruhh94]

Get rosin core solder wire won’t need flux then as it’s in it’s core, worked fine for me

[@JRaft0518]

Does it matter which way I solder the battery in? I did the solder and I still can’t save games

[@irregularmana6216]

people buy better quality solder!!

[@ProjctAce331]

can anyone tell me where i can find a gameboy color light like the one he displayed in this video? please and thank you

[@MeDecade]

All that just to replace a damn battery that should have just been able to slide out. I don't hold out much hope for my Zelda games.

[@panikrev175]

1:48 Moments like that just wrench my heart, can’t stand the sight of lost saves.... I’m reminded every time I boot up Sonic 3...

[@samusranzer]

I know that pain. My very first videogame was Pokemon Silver for GBC when it came out, and I had almost every single pokemon, I used a link cable to my gba and traded pokemons from red/blue/yellow/gold/crystal, had like 247 pokemons, like 15 or more in level 100, and a few years ago I tried to play that game again and I lost the game save. I haven't tested my red/blue/yellow in a while, and now I'm scared xD

[@PabloLopez-tz2zq]

Its great but i think its better to install a battery holder so you dont have to solder again a lot of people can screw his games

[@MarianMetanoia]

I've never soldered anything, but I'm decently handy with tools, I can follow instructions, and my brother has a soldering iron I can borrow. Would you recommend that someone who's never used a soldering iron try this tutorial? After watching your original video, I can't decide whether I should attempt this without practice. I just don't want to fuck up my old games lol.

[@KyleAwsm]

If you are confident enough, I'd give it a try. But if not and you need this repair work done, let me know via a DM on my Instagram and I can either help guide you or make arrangements with you to perform the repairs myself (for a small fee). Cheers!

[@wardogdauwdd3020]

Could you do a video on what each chip on a gameboy cart is and where to buy them

[@Nytrusdeathcyde]

what light mod is that for your gbc cant seem to find it also good tutorial

[@anthropomorphicmonster9113]

I have the tabbed batteries, a cheap iron and stuff but I might just go with electrical tape again like when I was a kid 😅

[@thefifthdoctor6780]

Cheers finally did mine. The ‘proper’ way.

[@gamesyncc4831]

I followed these exact steps and my Metroid 2 can now save!! I bought all the tools you showed as well. Thank you for the video!!!

[@jackiefannin8616]

Im very tempting to fix my battery in couple of my pokemon games

[@OXFKhan]

Thanks for the video, I will get the tools I require, then give it a go & replace the battery on my Zelda game.

[@KyleAwsm]

Best of luck to you! 🙂👍🏻 Hope it goes well, and thanks for watching!

[@warrensnook9435]

Well, I think I ruined my copy of pokemon yellow. The desoldering wick stuck to one of my pads. Any help? This is my first time doing this.

[@KyleAwsm]

Try adding more flux to the stuck area and turn up the temperature on your iron. It will come loose.

[@TheDoctor1492]

can I put a 2025 in where a 1616 was?

[@KyleAwsm]

Yes 👍🏻 In GB and GBC carts you can, but not in GBA carts.

[@TheDoctor1492]

@@KyleAwsm just because it's a tighter fit, or because of something else?

[@fuinharlz]

That's what I was going to ask. Good thing I decided to read the comments before asking the same thing :P It'll be easier to buy 2 2025 than 1 of each (since I'm replacing a pokemon yellow and pokemon gold carts) where I'm buying.

[@xxdeadxangelx6150]

Who wants to risk it, why not just buy a 200 in 100 carriage

[@happybubble4863]

I really wish I had the tools and materials necessary to do this

[@KyleAwsm]

If you have some game carts that need this done, feel free to reach out to me on Instagram. I do stuff like this for people (for a small fee) all the time. Thanks for watching!

[@feral_shade]

I didn't see the first version, but I'm definitely saving this video for later...i love the detailed instruction and the tips i didn't realize soldering required so much equipment--it seems like it'll cost a fortune to get a few games back up and running :P

[@king0vdarkness]

Please can you give a list of the products you used for UK?

[@samusranzer]

I pretty much have all the materials needed, except for the soldering braid, which I cannot find in any stores, except for Amazon online. Is there any alternative to using a soldering braid to remove all the remains of the old soldering?

[@KyleAwsm]

You could strip the braided insulation out of a junk coaxial cable and use that as a cheap alternative, but it would completely destroy the cable. I know of people using this cheap trick though! 👍🏻

[@bnxpcapth2o445]

Is 2.2% flux enough to solder gbc motherboards

[@kiyoaki1985]

Nice to see a bit more detail about how to solder retro game stuff. I'm not an experienced solderer, so I always just eyeball the temperature. On my last mod, I learned that a smaller tip isn't always better and a slightly stubbier tip actually helps a lot with getting the solder to transfer to the board cleanly

[@FelixGonzalezM]

Thanks so much for the detailed video this saved me a lot of time and got it right on the first try.

[@jesseclark1206]

Hello! In your first video you said to make sure you don't have residual power when you turn off the game. If I do, what do I do or what did I do wrong? Thanks

[@KyleAwsm]

I think what I was referring to is to just leave your system turned-off long enough for capacitors to discharge and to clear out internal RAM in case your save data is still loaded into some part of system memory. I believe this wouldn't cause an issue anyways, but better to be safe than sorry. This goes for any electronics. Hope this helps!

[@audunjemtland8287]

Can these be charged without being replaced?

[@fynn3016]

how do you know which battery to use for each game?

[@JS-te4gz]

Shouldn't you make a solder blob on tab the just heat

[@Frequently1]

If you break the battery brackets is it ruined? I broke mine out of ignorance doing a DIY. I tried to electrical tape them back on but still doesnt work with a new battery. I dont even get the battery message anymore but nothing saves

[@KyleAwsm]

Define "brackets".... Contact me on Instagram with pictures if you can. I'd like to see this. -> www.kyleawsm.com

[@Hitokiri2000]

Would you do a toturial where you use a keystone type batter holder for easy battery swap?

[@selenalamothe997]

okaaay i was gonna try and replace the battery so i can finally beat links awakening but looks like that isnt happening. i have no idea how to do any of this. my dad's got a soldering iron but i doubt he could understand how to do this anyways. can i just scrap off the old solder and use electrical tape?

[@KyleAwsm]

No, the solder is bonded with the metal pads on the cart PCB, it's not just applied on the surface - You'll destroy your cart if you try to scrape or pry it off. If you want it done right, I can do it for you for a small fee. If interested, reach out to me on my Instagram.

[@sethwisowaty8944]

@@KyleAwsm I do not have instagram, but how much would you charge to do this for a pokémon game I recently dug out of my parents house?

[@edgarsoto5126]

Great tutorial? Could you put the link of the batteries that you bought with the tabs on them? Thanks!

[@Roberob1189]

How do you get the CR1616 battery with the metal band on it? All my batteries and the ones at stores near me don’t have this. It’s like a watch battery but these have the negative side band isnt there.

[@gamesyncc4831]

You buy them like that. They have it on Amazon.

[@emmettturner9452]

Battery spot welders are pretty cheap. I got one with the nickel strips for building my own Lithium Ion 18650 packs. I mentioned in your previous video that I put a copy of Ken Griffey Jr, Present Major League Baseball in the freezer to make some adhesive labels brittle and it somehow popped all the spot welds (battery rattling around inside). I wasn’t able to duplicate this with my Game Boy games but it might be useful somewhere. :)

[@19badmanturk]

if your trying to put solder on top of solder will it not run, my solder really isnt flowing at all!, i have ordered a desolder braid to take the excess off, im hoping that after that il heat the metal on the game and the solder will run, also the flux i got is hard so bought a laco flux instead is that ok? the solder just seems to crumble

[@KyleAwsm]

Your iron may not be getting hot enough to melt Nintendo's solder joints. Also, if you bought a tub of rosin paste flux, use your iron to melt it and apply the melted paste to the joints like I do in the video - This will also help with heat transfer. Use flux with your braid as well. 👍🏻

[@darkfang932]

I'm concerned for my Pokémon Yellow Gameboy cartridge. It's pretty old and it feels like stuff is moving inside when I pick it up. I love that game to death and would die if the save went dead. Any tips?

[@DevonMeunier]

Dump the save using something like a GB Operator or an Analogue Pocket. Replace the battery, and transfer the save back.

[@bnxpcapth2o445]

I’ve just soldered my own battery in and it’s working but I know I didn’t do a good job how much will that effect me

[@KyleAwsm]

Feel free to hit me up on my Instagram and we can talk about it there. Thanks for watching.

[@zoruasnivy]

A question, do Japanese carts use different batteries? E.g. Pokemon Green

[@DevonMeunier]

It'll be clearly labelled when you open the cartridge shell.