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A 2010 Aspire, part of a series of personal computers by Acer Inc. aimed at the casual household user or for small business use.

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Cmos battery replacement for Acer aspire 5742G

I have removed the cmos/rtc battery, but cannot find a replacement for it, as it is a 3v, but very small and with two tangs to re solder it onto the mobo. Amazon say they have it but the battery is only 2v, when looking on their website. Does anyone have an idea where I could purchase one from online?

Update (05/17/23)

These are the pics for you, one is obviously for size comparison. The size, according to the digital caliper is: Diameter 12.67 X thickness 2.31 and it is 3 V. It is also rechargeable, from what it written on the back of it and is Mno2 Li, Magnesium Oxide and Lithium, I imagine.If you could provide any other data about it I would be happy. I have tried several online products, AMZ being one of them, but it doesn't show a pic of the battery.

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Hi @linfos,

Is there any model/type information stamped on the battery itself?

If so try searching using that information, to find other suppliers

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@linfos Can you upload a picture of the original battery? Adding images to an existing question

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@linfos "but very small and with two tangs to re solder" how small is small. Check the diameter and the thickness. For the "CR" model the first two numbers are diameter of the battery and the last two digits are the thickness. So a CR2032 is 20mm in diameter and 3.2mm thin. Your battery could be a CR2025 (Diameter of 20mm and 2.5mm thickness) with solder tabs. Just like @andrewsawesome already mentioned, pictures always help:-)

Update (05/17/23)

@linfos according to those dimension and Mn02Li its a ML1220 Check for something like this or this one

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I had a whole post all published but @oldturkey03 said it all much more succinctly, and in addition we both came up with exactly the same Amazon battery, so this is my second to his recommendation.

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Without a picture, my guess is this battery. It is a 3V CR2032 with solder tabs. If not, search 3v coin with solder tabs. It should also not be rechargeable.

I could not find any 2V coin batteries on AMZ. They are either 1.2V or 3V.

It may also be less expensive to find a solder in holder for the battery and use a standard CR2032 since AMZ seems to only have them in quantity and you will likely never use them.

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