FairlanePhantom
Mai's Apprentice
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Where can I find another battery for my MV1-C? Don't need to replace it yet, but would like to know for future reference.
Backup battery replacement on 1 slot
- Thread starter FairlanePhantom
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Mai's Apprentice
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Is that the coin shaped rechargeable battery or the stacked NiCd one?
RJ
RJ
FairlanePhantom
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Coin shape with gray edge.
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Hrmmm... I don't have that one stocked yet.
I need to update the website with more Neo stuff... I have stuff, just not up online.
RJ
I need to update the website with more Neo stuff... I have stuff, just not up online.
RJ
segasonicfan
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I'm 99% sure that batt is a CR2032. I sold my MV-1C a while ago so I'm sorry I can't check for you. However, these batts are extremely common for memory backup in all sorts of electronics. Saturn, Dreamcast, PS2, all CPU mobos, and tons of other electronics use them. It's just a 3v battery meant to fit the specific holder for it. You can holders and the batteries at www.jameco.com or Radioshack or anywhere really...I bet Home Depot has em too :P
-Segasonicfan
-Segasonicfan
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segasonicfan said:
You obviously have never gotten around to replacing the battery on a MV-1C. Jameco doesn't stock any rechargeable lithium batteries which is what is needed. I have posted before links to the right type of batteries for the 1-slots. Thje MV-1C and 1B however have a vertical mount Toshiba battery with tabs that are different from those used by other brands like Panasonic. Good luck finding an exact replòacement.
segasonicfan
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Sorry, I have definitely not. I have replaced MV-1 batts though and they aren't rechargeable at all. They are just 3.6v batts like in CPS2 hardware. I somehow doubt the MV-1C uses a rechargeable batt but hey, I really don't know. In any case, any 3v batt should suffice for powering the memory settings. Tabs are no big deal, Jameco does sell holders for the lithium batts that you can easily solder in.
-Segasonicfan
-Segasonicfan
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They are rechargeable and are stamped as such.
If you use regular lithium coin cell batteries and holders then you need to disable the charging circuit on the MVS board or you run the (severe!) risk of the battery leaking, rupturing, or in worst case scenarios - exploding/burning.
The compounds inside are HIGHLY toxic to humans and will cause severe damage to the logic board too. It's not something you want to fsck around with.
MKL: Do you have a close up pic of the battery and its mounting tabs? I'd like to try and source some. If not, no big deal. I have a board coming that will probably have one of those on it.
RJ
If you use regular lithium coin cell batteries and holders then you need to disable the charging circuit on the MVS board or you run the (severe!) risk of the battery leaking, rupturing, or in worst case scenarios - exploding/burning.
The compounds inside are HIGHLY toxic to humans and will cause severe damage to the logic board too. It's not something you want to fsck around with.
MKL: Do you have a close up pic of the battery and its mounting tabs? I'd like to try and source some. If not, no big deal. I have a board coming that will probably have one of those on it.
RJ
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Batteries.
All the MVS boards use rechargeable batteries inluding all the one slot boards new or old, nothing like CPS2 batteries which are 1/2 AA lithium batteries ( non rechargeable)
segasonicfan said:
All the MVS boards use rechargeable batteries inluding all the one slot boards new or old, nothing like CPS2 batteries which are 1/2 AA lithium batteries ( non rechargeable)
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You can probably get them here:
http://shopping.microbattery.com/s.nl/sc.2/category.910/.f?mbcat=rebutt
You will have to measure the coin and know the mAh rating as well, should be stamped on.
http://shopping.microbattery.com/s.nl/sc.2/category.910/.f?mbcat=rebutt
You will have to measure the coin and know the mAh rating as well, should be stamped on.
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channelmaniac said:
The mounting tabs are the same as the CR2430TVF in this datasheet (15.3mm spacing for the positive tabs):
http://www.microbattery.com/pdf/toshiba-specf/toshiba-lithium-cr2430-cr2450-tabs.pdf
The battery on the MV1B and 1C is marked VG2430 or IVR2430. Vertical mount batteries from other brands (notably Panasonic) don't match the Toshiba ones. Of course one may well adapt the different batteries somehow.
As for the battery holders, rechargeable lithium coin batteries always come with solder tabs as far as I see and to use them with holders you'd have to unweld or snip the tabs but unwelding may damage the battery while a battery with snipped tabs may not fit the holder. And in any case you have to find a holder that fits the MV1B/C. Jameco? They don't have any vertical holders.
FairlanePhantom
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When I change the battery, I plan on setting it up so the battery is next to the board so it can't possibly leak directly on the circuits.
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MKL said:
Aw crap...
Toshiba sold off their battery biz to Sanyo in 2000... and Sanyo doesn't make batteries with 15.3mm spacing on the 3 pin vertical mount package style. They use 10.2mm spacing.
Sounds like it'll be a special order lot. Urg.
RJ
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yeah, Panasonic vertical batteries have a 10.2mm spacing as well. Considering there are about 8mm between the negative and either of the positives on the MV1B/C, it might be possible to fit these batteries after bending the tabs a little.
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segasonicfan
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Interesting...I replaced my MV-1 board with a CPS2 3.6v (non-rechargeable) battery and now it holds memory and works fine (and has been for quite a while now). Odd.
I never disabled the charge circuit on my MV-1 board so maybe this isn't necessary. The battery is probably "charged" by sending 3v across it at a small current. It's possible that this isn't harming it because it is essentially working like a battery parallel. Like I said, I have replaced my MV-1 board with a non-rechargeable and it has been running fine for close to a year now.
The compounds are toxic and not good for boards but I don't think it is all THAT bad to experiment with. Obviously you don't want to break your board but as far as human risk factor goes, 3v batteries are way low on the list. Just don't lick up the leaking chemicals and you should be fine.
Of course, I have never been one to get all concerned about the health risks with electronics. After all, just melting solder releases cancerous fumes and I've been doing that for years and years. If you are really concerned about health and safety, messing with electronics probably isn't the way to go.
(lookit me living life on the edge!! :P)
-Segasonicfan