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Support and repair guides for the Lenovo ThinkPad T480. Released in January 2018.

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Markings on battery, T480, problematic?

Hi guys,

I bought a secondhand T480 at a reasonable price. It had a slightly weird smell, and opening it, I wonder if it had some wine spills or similar. Anyways, most looks good inside, but there are these two strange ‘sparkle’-markings on the battery that do not come off. I’m unsure if these are a problem or just a curiosity, any opinions? (there are two of these, alongside the battery, picture shows one of them)

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Machine works great btw, more if it's a potential issue.

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Ok, I will answer this myself.

Finally got through to Lenovo tech support, and the second guy was able to figure out there was no battery. duh.

So that just - and possibly literally - a dummy cover :)

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Hi @opux ,

It certainly looks like a “splash” mark but it makes you wonder how that would happen if the laptop was closed and something was spilled on it without affecting something else.

You would think that it would seep in and run. It looks more like the battery was exposed and then spilled on.

Are the marks just dis-colouration on the surface or are they “grooves” at all (bit hard to see in image) as if the battery case has been slightly eaten away by something acidic before being wiped off?

Is the battery hot to the touch when the laptop is charging or operating?

To me leaking lithium batteries smell like fruit mixed with a paint solvent (best as I can describe) but if it is hot then there would be hot plastic smells as well etc.

Since you say that everything looks clean and I hope dry, then create a Win 10 battery report, and check the Design capacity value against the Full Charge capacity value to determine the condition of the battery.

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14 Comments:

There are two identical marks, so splash just doesn't seem likely. My main concern is if it's a sign something bad is happening from inside the battery. It's not grooves or etched. And doesn't come off with alcohol.

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The smell of the computer to me is mostly like butyric acid - the faint smell of puke. (possibly red wine)

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@opux

Did you create a battery report as I suggested, you didn't say?

Is it the original battery?

Here's a link to the parts for your laptop. (I think that you must have either a 20L7 or 20L8 model).

Click on Select Commodity > Rechargeable Batteries and Internal (3) to find the part numbers for all the compatible batteries for the model. It may be printed somewhere on the battery that you have already. If not it may be a cheaper compatible replacement.

If it concerns you and you wish to replace it, search online using the battery part number "only" in the search box of your browser, to find suppliers that suit you best.

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It doesn't have a harddrive right now, so no. I'm not expecting anything to be off in terms of functionality though. But who knows

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@opux

FYI Please check my comment above as I was I editing it and didn't notice your comment.

Cheers

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Opti will be eternally grateful.
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