4 slot battery mod question

[jukeboxhero10]

Short and simple question, I removed the old battery and poped in a coincell holder. However I was wondering if I can just pop in a ml or lir 2032 instead of a cr2032 and not have to cut/ remove the 470 resister.

Also does anyone have a link to a cr2032 coincell holder that actually fits a mv4 or do I need to go the bodge wire route

 

[littlecharlie]

Short and simple question, I removed the old battery and poped in a coincell holder. However I was wondering if I can just pop in a ml or lir 2032 instead of a cr2032 and not have to cut/ remove the 470 resister.

Of course you can, that's what I do.
At first, I would normally remove the charging circuit and replace the battery with the typical CR2032. But I came across several boards that were consuming really fast the CR2032, and had to replace it within days ...
So now I just leave the charging circuit and replace the battery with lir2032 or even lir2430

 

[jukeboxhero10]

Of course you can, that's what I do.
At first, I would normally remove the charging circuit and replace the battery with the typical CR2032. But I came across several boards that were consuming really fast the CR2032, and had to replace it within days ...
So now I just leave the charging circuit and replace the battery with lir2032 or even lir2430

Thanks for the confirmation, I just say ml2032 cause that's uh what I have on hand. They are basically the same battery to my knowledge.

 

[lithy]

Also does anyone have a link to a cr2032 coincell holder that actually fits a mv4 or do I need to go the bodge wire route

While this thread is reasonably fresh, let me add a second request for this. Have an MV4, want a battery holder that will fit the existing pin locations (or at least close enough). Anyone done one that has a recommendation?

 

[Neo Alec]

While this thread is reasonably fresh, let me add a second request for this. Have an MV4, want a battery holder that will fit the existing pin locations (or at least close enough). Anyone done one that has a recommendation?

I think the ones I used on all my boards, including the 4-slot, were bought from Jamma Nation X. The site also has installation tutorials. I don't think they were a perfect fit for the holes on the board, but it wasn't anything a little extra solder couldn't fix.

 

[wyo]

Short and simple question, I removed the old battery and poped in a coincell holder. However I was wondering if I can just pop in a ml or lir 2032 instead of a cr2032 and not have to cut/ remove the 470 resister.

Also does anyone have a link to a cr2032 coincell holder that actually fits a mv4 or do I need to go the bodge wire route

We already confirmed this would work in chat. Highly offensive you would not just take our word for it but let me once again confirm it will work. You just use a standard coin cell battery holder.

 

[jukeboxhero10]

Some of us use the chat via mobile which doesn't always load properly.... Plus with the amount of memes and spam are you actually trying to bash me for missing a reply????

 

[jukeboxhero10]

Of course you can, that's what I do.
At first, I would normally remove the charging circuit and replace the battery with the typical CR2032. But I came across several boards that were consuming really fast the CR2032, and had to replace it within days ...
So now I just leave the charging circuit and replace the battery with lir2032 or even lir2430

Ty finally found a holder that fits. Was gonna just use a ml2032 even though it's 3v the neo wiki says it works, but your not the first to say use lir since it's 3.6 so I'll just go with that.

 

[lithy]

Ty finally found a holder that fits. Was gonna just use a ml2032 even though it's 3v the neo wiki says it works, but your not the first to say use lir since it's 3.6 so I'll just go with that.

What holder did you buy? You have a regular MV4 right? Lots of the tutorials online are for other board revisions and they all seem to have more space around the battery.

 

[jukeboxhero10]

What holder did you buy? You have a regular MV4 right? Lots of the tutorials online are for other board revisions and they all seem to have more space around the battery.

So I watched this video

, and was able to just find the style he used. https://www.amazon.com/dp/B0BJ1J4WY1?ref=ppx_yo2ov_dt_b_fed_asin_title

Now granted its not a perfect fit, you will have to bend the legs a bit but it works. A issue that has cropped up is I'm getting conflicting info in regards to does a ml2032 work or do you need a lir2032, or even some people saying neither. Those that say neither usually have 2 options.

One being cut the 470 resistor which charges out and use a cr2032. This makes no sense as it would validate that a ml2032 works, it is just the charging version of the cr2032, difference being you don't have to cut the resistor but it is labeled as a 3v battery where the mvs says 3.6 is needed. The lir is basically a ml2032 but is 3.6, however if a lir works then a ml should work.

The second option being buy a direct non coincell replacement. Basically a new one of the battery you just took out.

If I cant figure out which battery answer is correct or feel safe with the answer I'm just gonna do the second option and like every 5 years or so resolder in a new battery just to be safe with it potentially leaking.


Lol sorry for the wall of text.

 

[lithy]

Nice find, thanks for the part link. I had seen that video and it looked like my board even though he doesn't specifically say and then doesn't link a part!

I have a different one on order that I would prefer to use if it fits but I think it's going to be a little big. I might be able to shave the one side down a little, but it depends how much I want to mess with it.

I was planning on using the ML2032. I looked at the direct replacement Ni-Cd but the only available one in spec is nothing like the original shape. It's a horizontal barrel instead of a wide cylinder and fitment between the boards and even avoiding interference with some traces is an issue. There is a video on YouTube that showed it, I'll see if I can find it again. Doesn't look like a good solution to me.

I don't want to cut out the charging circuit and using a non rechargeable CR2032 in the 4 slot seems dumb to put a surface mount battery holder since you would have to disassemble each time you replace the battery. In that case wire in a battery holder and run the holder outside of the board so it is always accessible.

I looked also at the LR2032 (LIR2032). They are supposed to be rechargeable too, but some of the reviews I saw said that the 3.6V can range pretty significantly from 3.2-4.2V and that the typical charging circuit for them is more complicated than what the Neo Geo uses. Enough people are using the 3Vs without trouble that I'll stick to the low end rather than be a test mule for going on the high end of voltage or a semi-untested rechargable.

 

[Neo Alec]

I have my three MVS boards all modded with non-rechargeable CR2032 coin cell battery holders, and they just seem to last forever so far. The one in my MV1C must have been in there for about 7-8 years now, and is still working, and the other two boards are about 4 years now.

They don't seem to need to be changed often, if installed correctly.

 

[jukeboxhero10]

I have my three MVS boards all modded with non-rechargeable CR2032 coin cell battery holders, and they just seem to last forever so far. The one in my MV1C must have been in there for about 7-8 years now, and is still working, and the other two boards are about 4 years now.

They don't seem to need to be changed often, if installed correctly.

Im glad you posted here, I was actually going to ask about the life of the cr2032. I've seen some people mention that it only lasts them like 2-3 days before dying. But based on your post, your cr2032's have lasted years. Are they outliers?

 

[Neo Alec]

Im glad you posted here, I was actually going to ask about the life of the cr2032. I've seen some people mention that it only lasts them like 2-3 days before dying. But based on your post, your cr2032's have lasted years. Are they outliers?

I've seen those posts too. Those must be installed incorrectly.

 

[lithy]

I have my three MVS boards all modded with non-rechargeable CR2032 coin cell battery holders, and they just seem to last forever so far. The one in my MV1C must have been in there for about 7-8 years now, and is still working, and the other two boards are about 4 years now.

They don't seem to need to be changed often, if installed correctly.

Just to confirm since you're using CRs, did you remove the charging circuit resistor?

 

[Neo Alec]

Just to confirm since you're using CRs, did you remove the charging circuit resistor?

Yep. I followed the tutorials online, like on Jamma Nation X. If there isn't one that matches your board, I guess you'll have to figure it out.

 

[jukeboxhero10]

Yep. I followed the tutorials online, like on Jamma Nation X. If there isn't one that matches your board, I guess you'll have to figure it out.

yah like there isnt one for mv4. But Im guessing its all the same just cut the 470 resistor. I wonder how they installed things wrong. Its literally as simple as cut 470 install coin holder.

 

[Neo Alec]

Yeah, I don't know. There could be something else wrong with their boards.

 

[jukeboxhero10]

Yeah, I don't know. There could be something else wrong with their boards.

oh I'm wondering if its not the cr2032 thats the issue rather the board holds the charge/ settings for a day or so and thats whats draining for them. Or should the setting loss be instant if no battery is installed/ installed wrong

 

[lithy]

Some details for what I decided to go with on my MV-4 board are posted here.

Buying My Old Big Red Back 19 Years Later

Great story. So happy for you. I love this version big red cab. It's the same one I have, which I did a lot of restoration work on. I think black bat top sticks are what most of these cabs originally came with from the factory, so I ended up getting new Sanwa sticks with adapters for bat tops...

neo-geo.com

The part link jukeboxhero10 posted in Post #10 is the same part I bought for the Chinese one I bought.

The other is called Keystone 106. I sourced it through Digikey but just in case the link doesn't work in the future, Keystone 106 should turn up the right part.

106 | DigiKey Electronics

Order today, ships today. 106 – Battery Holder (Open) Coin, 20.0mm 1 Cell PC Pin from Keystone Electronics. Pricing and Availability on millions of electronic components from Digi-Key Electronics.

www.digikey.com

The battery was a Maxell ML2032 bought through Amazon.

 

[jukeboxhero10]

Some details for what I decided to go with on my MV-4 board are posted here.

Buying My Old Big Red Back 19 Years Later

Great story. So happy for you. I love this version big red cab. It's the same one I have, which I did a lot of restoration work on. I think black bat top sticks are what most of these cabs originally came with from the factory, so I ended up getting new Sanwa sticks with adapters for bat tops...

neo-geo.com

The part link jukeboxhero10 posted in Post #10 is the same part I bought for the Chinese one I bought.

The other is called Keystone 106. I sourced it through Digikey but just in case the link doesn't work in the future, Keystone 106 should turn up the right part.

106 | DigiKey Electronics

Order today, ships today. 106 – Battery Holder (Open) Coin, 20.0mm 1 Cell PC Pin from Keystone Electronics. Pricing and Availability on millions of electronic components from Digi-Key Electronics.

www.digikey.com

The battery was a Maxell ML2032 bought through Amazon.

I'm happy you've confirmed that a ml2032 works. I've been getting info that it needs to be a nihm replacement, and that id have to do other stuff in order to get a rechargeable working.

I already got the chinese holder installed with a ml2032, just havent turned it on lol. Did you notice your settings disappearing due to battery losing charge if you dont use the cab for a bit?

 

[lithy]

I'm happy you've confirmed that a ml2032 works. I've been getting info that it needs to be a nihm replacement, and that id have to do other stuff in order to get a rechargeable working.

I already got the chinese holder installed with a ml2032, just havent turned it on lol. Did you notice your settings disappearing due to battery losing charge if you dont use the cab for a bit?

I had mostly been messing around with the multicart yesterday and I'm not sure exactly what settings/high scores it can save with that. So I set the calendar and then shut it down was going to check it today and see if it kept that.

Then my next plan was to put my 4 real carts in, set a few scores, save some modified dip settings and shut it down for a day again and see if those are saving.

If you want me to run a certain test let me know exactly what and I can give it a try.

 

[jukeboxhero10]

I had mostly been messing around with the multicart yesterday and I'm not sure exactly what settings/high scores it can save with that. So I set the calendar and then shut it down was going to check it today and see if it kept that.

Then my next plan was to put my 4 real carts in, set a few scores, save some modified dip settings and shut it down for a day again and see if those are saving.

If you want me to run a certain test let me know exactly what and I can give it a try.

Nothing crazy just let me know how it goes, worst case we just have to take teh 470 resister out and pop in a cr2032. It just feels like a rechargeable will last longer. I was mostly just concerned it wasnt as simple as put in a coin holder and us a ml2032. Dont wanna fry things.,

 

[littlecharlie]

I had mostly been messing around with the multicart yesterday and I'm not sure exactly what settings/high scores it can save with that. So I set the calendar and then shut it down was going to check it today and see if it kept that.

Then my next plan was to put my 4 real carts in, set a few scores, save some modified dip settings and shut it down for a day again and see if those are saving.

If you want me to run a certain test let me know exactly what and I can give it a try.

If you are talking about the yellow/blue 161 cart, it won't store any hiscores or dipsettings.
And if you had already some data stored using normal carts, once you put the multicart, it will erase those data.

 

[channelmaniac]

Read the data sheets for the rechargeable battery. You're recharging it way outside what it was designed to take. This could lead to leakage or rupturing of the battery. It's not safe.

Cut the resistor and use a CR-2032.