Pro tip: Even if your soldering iron is at the proper temp it will not properly melt the solder if the tip is not clean. Make sure you clean the tip of your iron with a sponge or a brass sponge. Also, make sure you clean off the left over Flux with isopropyl alcohol.
i remember changing my silvers battery when i was around 10 yrs old. I didn't know anything about soldering so i pried the tabs off the battery and stuck a new watch battery of the same size inbetween the tabs and used electric tape to hold it tight. I was a very lucky person i didn't break anything. It was my favorite gamboy game. played it to death.
This is still awesome to read. I just recovered my Pokemon collection and found Pokemon Blue and Silver. I have to change my battery on Pokemon Silver :D
Thanks for making this video. I remember having to do this 4 years ago to fix my cousin's crystal version and the only videos i could find at the time were these kids prying the arms off the battery, putting a new one in, and covering it in electric tape. Good to have a professional looking video now.
I'm so glad you made this video, even 4 years later this is helping people so much!! I can finally get my GameBoy games working again!! Well I mean the saves working again. 😅
Fantastic video! Found my old Pokemon games (Blue, Silver and Crystal) and not a single one could save properly. Fixed all three with the help from this video :) Thanks alot!
The batteries for Red, Blue, and Yellow actually outlast the Gold, Silver, and Crystal carts. GSC have an RTC circuit attached to keep time, which means their drain is much quicker. RBY will last around 20 years, but GSC will last only 10-15 years.
⚠️⚠️⚠️ When you're done you should use some rubbing alcohol and a q-tip to remove the leftover flux on the board. Flux is mildly acidic and over time will eat into the board. ⚠️⚠️⚠️
@Dad_Shoes What happens when the battery dies. Does your saved game still exists just without the ability to saved? Or do u lose everything when the battery dies?
I love loving in the future! Thank you for this video! I literally have Pokemon Silver and found it while moving out of parents and loaded it EMPTY FILE and wouldnt save I was like noooo but this will make it playable again yay
Thank you for this. I have the Golden Sun collection, and they won't save. However, with your method, I can finally play those games on my ds lite again. Thanks for this!
There's a failsafe way of retaining your savefiles and it's rather cheap too, there's a device called the Monster Brain (it's normally a cheating device made exclusively for Pokémon) that can back up save files, and the way the memory is stored on the Monster Brain is through flash memory so you don't have to worry about the save deleting itself from the Monster Brain, it costs about $10, not sure which sites sell it though. It's pretty good to have if you need to back up your saves before the inevitable battery death or that one moment in which the battery shorts and somehow deletes your save file (I've seen that happen numerous times). Generally speaking, it's good to have one on hand, especially if you feel like your internal battery is about to die.
Nice video. I just did my donkey kong. I like to use soldering wick and suck the old solder right off the board. Eliminates the risk of solder splattering on other components.
@@bfapple yes this is true but I'm sure there are plenty of people that don't have much experience in soldering that will go in at max heat say 300°c and definitely end up causing this as it would only take holding it for a second or two to hit that why I still use leaded solder in most electronics as it has a much lower melting point I do have lead free for some applications.
OH MY GOD. Silver was my first Pokemon game and I was not able to save on it. I finished the game multiple times as a kid but I had to leave my gameboy turned on.
I remember just lifting up the tabs and replacing the battery itself on my copy as a kid, put it back up with some tape lol and now I’m thinking on doing the same with this copy of Saphire I just got
Really love these types of videos. Love seeing the systems taken apart and games as well. Did you ever take apart a dream cast? I would love to see that video or see you do one.
Spawn Wave! I'll do this on the Gold version! Funny thing is that my yellow version is 5 years older (20 in total) and it kept my game over the decades!
Gonna try this for fun even though you can easily emulate these games these days. Nothing quite beats the authentic feeling of having the little handheld in your hands, though. The resolution always looks wonky as well if it's not on a gameboy. Thanks for the little tutorial
I melted a plastic pen on a candle and pressed it against the screw and used that as a screwdriver. Then I just taped on a new battery. Budget, but it works 😄
Haha oh wow! My Pokemon Gold didn't save either but my problem was a little different. I looked into the connectors and I had something stuck on the pins which I think was the problem. I did go back and get it exchanged. But this is still an awesome vid Jon!
Yellow is the worst. You're guaranteed one useless pokemon for the first gym battle, plus, if you really are trying to catch them all, you need to catch a second one because you can't evolve him. He also takes up a slot better served by something like Zapdos, who outclasses it in every single stat.
Watched this video just trying to find the temperature to use lol, managed to fix Pokemon silver, links awakening DX and Pokemon emerald in a little over an hour and it was my first time soldering
If you dont have a soldering iron keep in mind you can use electric tape to fix it as long as you dont break the metal contacts when you remove the original battery
I changed my battery, it saves but the save gets randomly lost after some time. Maybe I don’t have enough salder on the board? The positive and negative part is in the right place.
fun fact: the GSC games were notorious for the batteries dying in just a few years rather than 15+ my beloved silver died in about 5 years or so. my gold and crystal are dead as well.
Surprisingly I have a Pokémon Silver cartridge from a flea market. A few years later, it stopped saving to the point I played it on my Gamebody Advance SP without turning it off (keeping it charged at night) back when I was a kid. Now I regret doing that because I think that was the reason why my GBA SP only lasts for a few minutes before it needs recharging again, plus its L and R buttons are broken, even though I barely used those (Plus, there are no L and R buttons required for GameBoy games)
Unfortunately I’m currently going through this 🤦🏽♂️. I purchased Silver & Gold and neither of them save. The seller Politely took my money without letting me know anything and to figure it out. So now I’m here 😂
Im here bc i just got a pokemon gold from amazon, and i did the starter glitch so i thought it was fine. Got a shiny hoot hoot. went to sleep and now my save disappeared ... i hinestly wanna die.
Well the battery in Pokemon gold and silver drain a little faster then red and blue. I have my copy of red and the battery is still good, but the one from my copy of gold died and I had to change it. The reason is because gold and silver have a real time clock that uses more of the battery then red and blue. So expect the battery to last about 8 to 10 years not 15. Also make sure you get a quality tabbed battery that will also affect how long the battery lasts.
Wish i wouldve seen this video a few months ago. Started a new game because my original one was gone from years ago. When i started playing a new game it would save succesfully as far as turning it off and on again throughout the first day. But then the next day it was gone. Same issue i assume?
I have lots of experience soldering. This is how I would recommend doing it. Sorry if I'm a bit wordy, I just wanted to get into detail to remove ambiguity. 1. Get the following parts: Soldering Iron Solder (may or may not come with iron) Screwdriver w/ correct bit Solder braid/wick (not mentioned in the video) Flux (optional) 2. Open up the circuit board and remove the old battery as shown in the video. 3. Use the solder wick to remove the old solder from the pads. This is the extra step not shown in this video. Wicking away the old solder makes for a much better joint. There are many reasons for removing the old solder from the pads. To do this, place the solder wick on the pad, and then press the iron on the wick. The old solder should melt and flow onto the wick. If it's having trouble melting or flowing, adding a little bit of your new solder should help things along. 4. If you have flux, wipe some on both the pads and on the new battery where you are going to solder. As the flux is heated, the chemicals in the flux will remove surface contamination, allowing the solder to flow easier and make a better connection. Flux isn't necessary for soldering, but it makes it a little easier. Keep in mind that the majority of solder out there has "rosin core", which means there is a core of flux within the solder itself, so you likely won't have to add any extra. 5. Place the new battery in the correct position. Unlike what is shown in the video, you want to do this before you add your new solder. This means you will be placing your new battery on empty pads without any solder. You will then solder it while the battery is in position. 6. Solder the new battery in place. While the battery is in position, take your soldering iron and heat up one of the pads for around half a second to a second. Don't worry about damaging the board by heating it for too long - this is unlikely to happen (unless you leave your iron on there for a good minute or two). Now, add your solder (while keeping your iron on the joint, of course). Once you have enough solder and it has flooded the joint, remove both the solder and the iron. Do the same for the other pad, which should be easier because the first solder joint will lock the battery in position. It might sound scary but it's easy and intuitive. This is the professional way to do it, and it will usually yield the best results. For various reasons, this method is better than just adding solder to the board and then melting it while putting your battery in place. 7. Put everything back together and enjoy! Now, the method shown in the video does work fine. It's just that there are a couple things that could be done differently that would make this a better (and more professional) job - wicking away the old solder, and changing the way you solder the new battery in place.
My local retro game shop replaces batteries on all pokemon games before selling them. I miss pokemon silver so much. My copy dissappeared a long time ago.
I wish that battery switching didnt involve Soldering its like, you gotta learn how to do one extra thing to replace the battery for your favorite Pokemon game.
Since Nintendo announced they won't make a revision any time soon and will instead focus on expansion hardware through USB C, I wonder it they'll make some form of the Wii U gamepad device for the Switch for certain games, like Mario maker Like in docked mode it would be Bluetooth or connected to the switch dock and it portable it would clip on and it would kinda look like a DS/3DS
3 years later and this video still coming in clutch. Thanks for the instructions!
The amazon link doesn't work anymore though
Yeah....don't want to mess mine up I'll take it somewhere to see if they can do it
These types of videos are awesome! :D
@5A1F bot probs
@5A1F its the only comment that got a heart like
Pro tip: Even if your soldering iron is at the proper temp it will not properly melt the solder if the tip is not clean. Make sure you clean the tip of your iron with a sponge or a brass sponge. Also, make sure you clean off the left over Flux with isopropyl alcohol.
i remember changing my silvers battery when i was around 10 yrs old. I didn't know anything about soldering so i pried the tabs off the battery and stuck a new watch battery of the same size inbetween the tabs and used electric tape to hold it tight. I was a very lucky person i didn't break anything. It was my favorite gamboy game. played it to death.
This is still awesome to read. I just recovered my Pokemon collection and found Pokemon Blue and Silver. I have to change my battery on Pokemon Silver :D
My Pokémon yellow battery is still good, and blue. I can’t believe it
@@Biowolf626 My yellow still works too lol
@@savagemathorror4671 Same my yellow is good but my gold is dead. Wonder what's going on there. Does yellow's save just use less power?
@@TheAkashicTraveller yellow blue and red all good, silver gold and crystal gone. Weird.
Dude thank you. You save my childhood game for 8mins and 34 sec. Now I need to order the proper tools to revive my GB Silver fun.
I'm trying to play my Pokemon silver O found from when I was a kid and was wondering why it's not saving. Thankyou
Thanks for making this video. I remember having to do this 4 years ago to fix my cousin's crystal version and the only videos i could find at the time were these kids prying the arms off the battery, putting a new one in, and covering it in electric tape. Good to have a professional looking video now.
I just found my Silver version. It was my very first video game ever & I’m excited to replace the battery & play it again. Thanks for the help.
I'm so glad you made this video, even 4 years later this is helping people so much!! I can finally get my GameBoy games working again!! Well I mean the saves working again. 😅
Cant wait to learn how to fix my Gold! I was about to hunt down another copy. Now I have to find the other GameBoy I had been given
Fantastic video! Found my old Pokemon games (Blue, Silver and Crystal) and not a single one could save properly. Fixed all three with the help from this video :)
Thanks alot!
absolute life-saver (and game saver! lol). can't wait to try this for my copy of pokemon gold! Thanks, dude!
My Red and Yellow cartridges are *_still_* working perfectly somehow.
The Blue one on the other hand........ Imma need this video...
Fulken if you wanna retain your saves and the battery still works but its like 10-15 yrs old replace the battery while the game is in the gameboy
@@buttcracksniffer74 Isn't this dangerous? There is voltage on it then, you could damage something.
The batteries for Red, Blue, and Yellow actually outlast the Gold, Silver, and Crystal carts. GSC have an RTC circuit attached to keep time, which means their drain is much quicker. RBY will last around 20 years, but GSC will last only 10-15 years.
@@buttcracksniffer74 Does this really work?
My Pokémon blue doesn’t go through as a game :(
Anyone here from 2024?
Since this video came out, it's been 6 years! By 2024, my Save Battery is dry again! I keep needing this video!
@@RandomComputerOnRUclips ikr
Me. I hope this video helps me fix my old Pokémon crystal cartridge.
⚠️⚠️⚠️ When you're done you should use some rubbing alcohol and a q-tip to remove the leftover flux on the board. Flux is mildly acidic and over time will eat into the board. ⚠️⚠️⚠️
Fun Fact: I found one for 11 bucks on a flea market yesterday and the battery is still holding the save. Tho I will replace it too.
EpicLPer Good idea.
My pokemon red, yellow, and blue still have their original batteries and somehow still work.
@Dad_Shoes What happens when the battery dies. Does your saved game still exists just without the ability to saved? Or do u lose everything when the battery dies?
I didn’t know about this probably until I made my first save out of Elm’s lab, thankfully I found out about this before I got to far
I love loving in the future!
Thank you for this video! I literally have Pokemon Silver and found it while moving out of parents and loaded it EMPTY FILE and wouldnt save I was like noooo but this will make it playable again yay
Thank you for this. I have the Golden Sun collection, and they won't save. However, with your method, I can finally play those games on my ds lite again. Thanks for this!
GBA games don't use battery to retain the save. Are you sure they are legit carts?
@@bfapple some early GBA games did use batteries (Castlevania circle of the moon, for example), but golden sun definitely didn’t.
@@zidane6520 thought that Nintendo switched to flash storage (as opposed to RAM) for all GBA carts.
@@bfapple GBA carts can actually have four different types of save mechanisms:
EEPROM chips , flash chip, battery saves, and ferroelectric RAM (FRAM)
Awesome man! I'm waiting on the battery for mine then I'll be good to go! Clutch AF!!!
Thank you! My Link's Awakening doesn't save anymore and now this just saved me... literally.
Thanks for taking the time to make this man.
There's a failsafe way of retaining your savefiles and it's rather cheap too, there's a device called the Monster Brain (it's normally a cheating device made exclusively for Pokémon) that can back up save files, and the way the memory is stored on the Monster Brain is through flash memory so you don't have to worry about the save deleting itself from the Monster Brain, it costs about $10, not sure which sites sell it though. It's pretty good to have if you need to back up your saves before the inevitable battery death or that one moment in which the battery shorts and somehow deletes your save file (I've seen that happen numerous times). Generally speaking, it's good to have one on hand, especially if you feel like your internal battery is about to die.
Do I need too replace battery in Pokémon sapphire ?. .
@@josepshchavez4337 I can't find my GBA ones but they use the in game clocks too so probably.
Excellent video Jon(SW). Very useful knowledge, good stuff man.
Nice video. I just did my donkey kong. I like to use soldering wick and suck the old solder right off the board. Eliminates the risk of solder splattering on other components.
Please make more of these videos! We love them so much!
Just bought a Donkey Kong for GB that won't save.
Here comes Spawn Wave from the past with the lifeline.
W/e he did, he looks great these days.
I love videos like this
Also becareful as to not overheat the battery as it could result in thermal run away. Awesome vid.
The only risk is if the iron temperature is >250C, or if somebody heats the tab for far too long.
@@bfapple yes this is true but I'm sure there are plenty of people that don't have much experience in soldering that will go in at max heat say 300°c and definitely end up causing this as it would only take holding it for a second or two to hit that why I still use leaded solder in most electronics as it has a much lower melting point I do have lead free for some applications.
This is why GameBoy Color should have cloud saves...
boi if you dont
Maybe he means vc Gameboy.
I know, what were they thinking leaving that feature out in the 90s? Shocking really!
Harbor Freight has good soldering irons for Like $5. Works great. $8-$9 with the rosin core.
OH MY GOD. Silver was my first Pokemon game and I was not able to save on it. I finished the game multiple times as a kid but I had to leave my gameboy turned on.
Awww Spawn, thank you for this video. It was a nice trip down nostalgia lane :)
This will help me fix my old pokemon gold that i've had forever.
Appreciate the video. This worked for my silver.. for almost a week 😭
Just realized mine was dead today after getting excited to play through it again haha. Curious to give soldering a try.
I remember just lifting up the tabs and replacing the battery itself on my copy as a kid, put it back up with some tape lol and now I’m thinking on doing the same with this copy of Saphire I just got
I enjoyed watching you fix the save. :) Merry Christmas!
Really love these types of videos. Love seeing the systems taken apart and games as well. Did you ever take apart a dream cast? I would love to see that video or see you do one.
We need ‘SpawnWave Fixes Sundays’!!
SehxualPanda Thompson yes please
My Sunday’s aren’t broken though.... it’s Monday’s that’s the problem /:
i love how you think oh this friendly fella is a bit over weight, then you realise that he is absolutely jacked
Spawn Wave! I'll do this on the Gold version! Funny thing is that my yellow version is 5 years older (20 in total) and it kept my game over the decades!
Gonna try this for fun even though you can easily emulate these games these days. Nothing quite beats the authentic feeling of having the little handheld in your hands, though. The resolution always looks wonky as well if it's not on a gameboy. Thanks for the little tutorial
I melted a plastic pen on a candle and pressed it against the screw and used that as a screwdriver.
Then I just taped on a new battery.
Budget, but it works 😄
God damn hill billy
Might have to do that where could I buy a new battery
1:23
This guy said “go to radioshack”
XD 😂
I’m here in 2020 and wow what a different look.
That is awesome! That is good for me to learn even more, as I am going to school for biomedical engineering technology.
hey spawn you had to give pokemon a good scrubbing with a qtip and alcohol to clean the pins, just to make it extra clean with a new battery 😀
Idrees willz87 you can also use a eraser and clean the pins lightly but you need to remove the case first.
Haha oh wow! My Pokemon Gold didn't save either but my problem was a little different. I looked into the connectors and I had something stuck on the pins which I think was the problem. I did go back and get it exchanged. But this is still an awesome vid Jon!
Tech Wave at its best!
Mine won’t save either. I’m glad you posted a video of this. This is one of my fav games. My Chrystal file deleted too.
You look so healthy and natural in these older videos. Hope you're doing okay man
Thanks! I've got a Pokemon Gold experiencing the same issue. Now I can fix it!
Pokemon yellow! Is the best.
P.s. great video!
Yellow is the worst. You're guaranteed one useless pokemon for the first gym battle, plus, if you really are trying to catch them all, you need to catch a second one because you can't evolve him. He also takes up a slot better served by something like Zapdos, who outclasses it in every single stat.
thanks a lot man, Tech Waves are awesome, hope you can eventually fix your old Switch and make a Tech Wave about it.
Tool time with Spawn wave..(rubs hands together)
Thanks for the video - bought the tools I needed and fixed the game so I can share with my boy!
Keep up the good job spawn , love your vids :3
Thanks for the help buddy!
I have also that. It sucks when the internal battery dies, all your save data will be lost.
Defo gonna give this a go. Cheers dude 👍🏼
now do it again but with only a hammer
Watched this video just trying to find the temperature to use lol, managed to fix Pokemon silver, links awakening DX and Pokemon emerald in a little over an hour and it was my first time soldering
If you dont have a soldering iron keep in mind you can use electric tape to fix it as long as you dont break the metal contacts when you remove the original battery
I changed my battery, it saves but the save gets randomly lost after some time. Maybe I don’t have enough salder on the board? The positive and negative part is in the right place.
fun fact: the GSC games were notorious for the batteries dying in just a few years rather than 15+ my beloved silver died in about 5 years or so. my gold and crystal are dead as well.
Surprisingly I have a Pokémon Silver cartridge from a flea market. A few years later, it stopped saving to the point I played it on my Gamebody Advance SP without turning it off (keeping it charged at night) back when I was a kid. Now I regret doing that because I think that was the reason why my GBA SP only lasts for a few minutes before it needs recharging again, plus its L and R buttons are broken, even though I barely used those (Plus, there are no L and R buttons required for GameBoy games)
Unfortunately I’m currently going through this 🤦🏽♂️. I purchased Silver & Gold and neither of them save. The seller Politely took my money without letting me know anything and to figure it out. So now I’m here 😂
Are you stalking me? First i sent my GC for repairs and you post a disassembly video, and now I just stumbled upon my old pokemon gold version xD
This pretty much happened to my Pokémon Crystal a couple of years ago but I never got around to changing the battery.
Lowes or Home depot will cost you a lot for a soldering iron. I would recommend Walmart if you are on a budget.
Don't you just love the smell of molten rosin core solder? lol
Huh, that's a refreshingly simple process. I should try it out with my dead carts.
Im here bc i just got a pokemon gold from amazon, and i did the starter glitch so i thought it was fine. Got a shiny hoot hoot. went to sleep and now my save disappeared ... i hinestly wanna die.
great video's man, keep up the good work :)
Well the battery in Pokemon gold and silver drain a little faster then red and blue. I have my copy of red and the battery is still good, but the one from my copy of gold died and I had to change it. The reason is because gold and silver have a real time clock that uses more of the battery then red and blue. So expect the battery to last about 8 to 10 years not 15. Also make sure you get a quality tabbed battery that will also affect how long the battery lasts.
yep, my PKMN yellow also still saves without issue
Actually did the same thing with the same game a few years ago.
is there anything you can't do?
Bring his switch back to life... too soon?
Bread Crumbs bro
Get his switch saves
Drop an F-bomb.
He can't get pregnant jrjrjr
Damn. This dude lost alota weight. 👍
Wish i wouldve seen this video a few months ago. Started a new game because my original one was gone from years ago. When i started playing a new game it would save succesfully as far as turning it off and on again throughout the first day. But then the next day it was gone. Same issue i assume?
Can you review other types of game cartridges and how to replace the battery on those?
I have lots of experience soldering. This is how I would recommend doing it. Sorry if I'm a bit wordy, I just wanted to get into detail to remove ambiguity.
1. Get the following parts:
Soldering Iron
Solder (may or may not come with iron)
Screwdriver w/ correct bit
Solder braid/wick (not mentioned in the video)
Flux (optional)
2. Open up the circuit board and remove the old battery as shown in the video.
3. Use the solder wick to remove the old solder from the pads.
This is the extra step not shown in this video. Wicking away the old solder makes for a much better joint. There are many reasons for removing the old solder from the pads. To do this, place the solder wick on the pad, and then press the iron on the wick. The old solder should melt and flow onto the wick. If it's having trouble melting or flowing, adding a little bit of your new solder should help things along.
4. If you have flux, wipe some on both the pads and on the new battery where you are going to solder.
As the flux is heated, the chemicals in the flux will remove surface contamination, allowing the solder to flow easier and make a better connection. Flux isn't necessary for soldering, but it makes it a little easier. Keep in mind that the majority of solder out there has "rosin core", which means there is a core of flux within the solder itself, so you likely won't have to add any extra.
5. Place the new battery in the correct position.
Unlike what is shown in the video, you want to do this before you add your new solder. This means you will be placing your new battery on empty pads without any solder. You will then solder it while the battery is in position.
6. Solder the new battery in place.
While the battery is in position, take your soldering iron and heat up one of the pads for around half a second to a second. Don't worry about damaging the board by heating it for too long - this is unlikely to happen (unless you leave your iron on there for a good minute or two). Now, add your solder (while keeping your iron on the joint, of course). Once you have enough solder and it has flooded the joint, remove both the solder and the iron. Do the same for the other pad, which should be easier because the first solder joint will lock the battery in position. It might sound scary but it's easy and intuitive. This is the professional way to do it, and it will usually yield the best results.
For various reasons, this method is better than just adding solder to the board and then melting it while putting your battery in place.
7. Put everything back together and enjoy!
Now, the method shown in the video does work fine. It's just that there are a couple things that could be done differently that would make this a better (and more professional) job - wicking away the old solder, and changing the way you solder the new battery in place.
Nice, excellent video.
Yeah I did this when I was a little kid. You can also buy the 2024 battery and be careful when bending the contacts I think.
Edit:2025 was the battery
I use roms so I don't have to worry about this anymore but still cool vid dude
My local retro game shop replaces batteries on all pokemon games before selling them. I miss pokemon silver so much. My copy dissappeared a long time ago.
This might be a stupid question but can I use the same flux and soder I use for soldering copper pipes together?
Nope
I've never used a solder before, is there a certain type of metal wire you have to use when replacing the battery?
I wish that battery switching didnt involve Soldering its like, you gotta learn how to do one extra thing to replace the battery for your favorite Pokemon game.
Since Nintendo announced they won't make a revision any time soon and will instead focus on expansion hardware through USB C, I wonder it they'll make some form of the Wii U gamepad device for the Switch for certain games, like Mario maker
Like in docked mode it would be Bluetooth or connected to the switch dock and it portable it would clip on and it would kinda look like a DS/3DS
Smarter everyday wave
my favorite generation pokemon game
Learning. Ty
Me and my brother got one from a yard sale in the early 2000's and it didn't save at all we just left our gameboy on untill it died
Lol this guy going all out and I just used some sticky tape and a new watch battery and it works fine and still does 🙈
bro say a radio shack! i don't live within a 50 mile radius of a radio shack
Thank you man
I wish I knew how to do this back then when I had crystal
What kind of battery is it? I see many variations online (CR1616, CR2025, CR2032)
I wish my guitar was this easy to solder