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May 9th, 2026 22:35
CMOS Battery Replacement for Optiplex 7070 Ultra
I need to replace the CMOS battery in my 7070 Ultra. I have bought 2 different batteries from Amazon that claim they are direct replacements, but the pigtail plug is not correct. Is there a part number for this exact replacement?
As a side note, is there a place I can find a parts list for Dell PCs that isn't as confusing as the support website's 'product specifications' page?
Thank you.
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DELL-ChrisM2
Community Manager
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May 9th, 2026 23:12
Dell part 8MXT6
Our users out here can also assist in finding Dell part numbers. But no, there is not a public list of every part.
redxps630
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May 9th, 2026 23:29
https://www.dell.com/support/manuals/en-us/optiplex-7070-ultra/optiplex_7070_ultra_sm/removing-the-coin-cell-battery?guid=guid-cea3e565-c16e-488c-8317-7e8fc173ca21&lang=en-us
good idea to measure the Dell battery plug to know the pitch before order replacement
https://m.media-amazon.com/images/I/515QI0yfC4L._US500_.jpg
https://www.polartech.com.au/cdn/shop/files/1_45a35b1f-647c-4e5a-b735-03cca1d9a355_535x.jpg?v=1735874681
(edited)
TheReal_oZo
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May 10th, 2026 13:15
@DELL-ChrisM2 Thank you.
TheReal_oZo
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May 10th, 2026 13:16
@redxps630 Thank you.